Introduction. Knee dislocations, vascular injuries and floating knee injuries can be initially managed by a external fixator. Fixator design constructs include the AO pattern and the Diamond pattern. However, these traditional constructs do not adhere to basic principles of external fixation. The Manchester pattern knee-spanning external fixator is a new construct pattern, which uses beam loading and multiplanar fixation. There is no data on any construct pattern. This study compares the stability of these designs. Materials & Methods. Hoffman III (Stryker, USA) external fixation constructs were applied to articulated models of the lower limb, spanning the knee with a diamond pattern and a Manchester pattern. The stiffness was loaded both statically and cyclically with a Bose 3510 Electroforce mechanical testing jig (TA Instruments). A ramp to load test was performed initially and cyclical loading for measurement of stiffness over the test period. The results were analysed with a paired t-test and ANOVA. Results. The mean stiffness with the diamond pattern fixator was significantly less stiff than the Manchester pattern fixator – by a factor of 3 (40N/mm vs 115N/mm). Displacement increased in all patterns over simulated loading equating to six weeks. The diamond pattern demonstrated a 50%% increase in displacement over time. The Manchester pattern demonstrated only 20% increase in displacement over time. These are all statistically significant (p<0.01). Conclusions. The aim of an external fixator in knee dislocations and vascular injuries is to provide stability, prevent displacement and protect repairs. Vascular injuries often require fixation for several weeks to protect a repair. The Manchester pattern, applying the principles of external fixation, provides a stiffer construct and also confers greater stability over the time a fixator may be required. We commend this more informed design for the management of knee dislocations and vascular injuries

Aims

To fully verify the reliability and reproducibility of an experimental method in generating standardized micromotion for the rat femur fracture model.

Standard fixation for intra-articular distal humerus fracture is open reduction and internal fixation (ORIF). However, high energy fractures of the distal humerus are often accompanied with soft tissue injuries and or vascular injuries which limits the use of internal fixation. In our report, we describe a highly complex distal humerus fracture that showed promising healing via a ring external fixator. A 26-year-old man sustained a Gustillo Anderson Grade IIIB intra-articular distal humerus fracture of the non-dominant limb with bone loss at the lateral column. The injury was managed with aggressive wound debridement and cross elbow stabilization via a hinged ring external fixator. Post operative wound managed with foam dressing. Post-operatively, early controlled mobilization of elbow commenced. Fracture union achieved by 9 weeks and frame removed once fracture united. No surgical site infection or non-union observed throughout follow up. At 2 years follow up, flexion - extension of elbow is 20°- 100°, forearm supination 65°, forearm pronation 60° with no significant valgus or varus deformity. The extent of normal anatomic restoration in elbow fracture fixation determines the quality of elbow function with most common complication being elbow stiffness. Ring fixator is a non-invasive external device which provides firm stabilization of fracture while allowing for adequate soft tissue management. It provides continuous axial micro-movements in the frame which promotes callus formation while avoiding translation or angulation between the fragments. In appropriate frame design, they allow for early rehabilitation of joint where normal range of motion can be allowed in controlled manner immediately post-fixation. Functional outcome of elbow fracture from ring external fixation is comparable to ORIF due to better rehabilitation and lower complications. Ring external fixator in our patient achieved acceptable functional outcome and fracture alignment meanwhile the fracture was not complicated with common complications seen in ORIF. In conclusion, ring external fixator is as effective as ORIF in treating complex distal humeral fractures and should be considered for definitive fixation in such fractures

Introduction. The various problems that are managed with circular external fixation (e.g. deformity, complex fractures) also typically require serial plain x-ray imaging. One of the challenges here is that the relatively radio-opaque components of the circular external fixator (e.g. the rings) can obscure the view of the area of interest (e.g. osteotomy site, fracture site). In this presentation we describe how the geometry of the x-ray beam affects the produced image and how we can use knowledge of this to our advantage. Whilst this can be applied to any long bone, we have focused on the tibia, given that it's the most common long bone that is treated by circular external fixation. Materials & Methods. In the first part of the presentation we describe the known attributes (geometry) of the x-ray beam and postulate what effect it would have when we x-ray a long bone that is surrounded by a circular external fixator. In the second part we demonstrate this in practice using a tibia and a 3 ring circular external fixator. Differing x-ray beam orientations are used to demonstrate both how the geometry of the beam affects the produced image and how we can use this to our advantage to better visualise part of the bone. Results. The practical part of the study confirmed the theoretical part. Conclusions. Knowledge of the beam geometry can be used to minimise the obscuring nature of the circular fixator. This technique is simple and can be easily taught to the radiographer. It is a useful adjunct for the limb reconstruction surgeon

Introduction. External fixators are attached to bones with percutaneous pins and wires inserted through soft tissues and bone increasing the risk of infections. Such infections compromise patient outcomes e.g., through pin loosening or loss, failure of fixator to stabilise the fracture, additional surgery, increased pain, and delayed mobilisation. These infections also impact the healthcare system for example, increased OPD visits, hospitalisations, treatments, surgeries and costs. Nurses have a responsibility in the care and management of patients with external fixators and ultimately in the prevention of pin-site infection. Yet, evidence on best practices in the prevention of pin-site infection is limited and variation in pin-site management practices is evident. Various strategies are used for the prevention of pin-site infection including the use of different types of non-medicated and medicated wound dressings. The aim of this retrospective study was to investigate the use of dry gauze or iodine tulle dressings for the prevention of pin-site infections in patients with lower limb external fixators. Methodology. A retrospective study of patients with lower limb external fixators who attended the research site between 2015–2022. Setting & Sample: The setting was the outpatient's (OPD) orthopaedic clinic in a University Teaching Hospital in Dublin, Ireland. Eligibility Criteria:. Over the age of 16, treated with an Ilizarov, Taylor Spatial frame (TSF) or Limb Reconstruction System (LRS) external fixators on lower limbs,. Pin-sites dressed with dry gauze or iodine tulle,. Those with pre-existing infected wounds close to the pin site and/or were on long term antibiotics were excluded. Follow Up Period: From time of external fixator application to first pin-site infection or removal of external fixator. Outcome Assessment: The primary outcome was pin-site infection, secondary outcomes included but were not limited to frequency of pin-site infection according to types of bone fixation, frequency of pin/wire removal and hospitalisation due to infection. Data analysis: IBM SPSS Version 25 was used for statistical analysis. Descriptive and inferential statistics were conducted as appropriate. Categorical data were analysed by counting the frequencies (number and percentages) of participants with an event as opposed to counting the number of episodes for each event. Differences between groups were analysed using Chi-square test or Fisher's exact test, where appropriate. Continuous variables were reported using mean and standard deviations and difference analysed using a two-sample independent t-test or non-parametric test (Mann-Whitney), where appropriate. Using Kaplan-Meier, survival analysis explored time to development of infection. Ethical approval: granted by local institute Research Ethics Committee on 12th March 2018. Results. During the study period, 97 lower limb external fixators were applied with 43 patients meeting the study eligibility criteria. The mean age was 38 (SD 14.1; median 37) and the majority male (n=32, 74%). At least 50% (n=25) of participants had an IIizarov fixator, with 56% (n=24) of all fixators applied to the tibia and fibula. Pin/wire sites were dressed using iodine (n=26, 61%) or dry gauze dressings (n=15, 35%). The mean age of participants in the iodine group was significantly higher than the dry gauze group (p=.012). The only significant difference between the iodine and dry gauze dressing groups at baseline was age. A total of 30 (70%) participants developed a pin-site infection with 26% (n=11) classified as grade 2 infection. Clinical presentation included redness (n=18, 42%), discharge (n=16, 37%) and pain (n=15, 35%). Over half of participants were prescribed oral antibiotics (n=28, 65%); one required intravenous antibiotics and hospitalization due to pin-site infection. Ten (23%) participants required removal of pin/wires; two due to pin-site infection. There was no association between baseline data and pin-site infection. The median time to developing an infection was 7 weeks (95%, CI 2.7 to 11.29). Overall, there were 21 (81%, n=26) pin-site infections in the iodine group and nine (60%, n=15) in the dry gauze group, difference in proportion and relative risk between the dressing groups were not statistically significant (RR 1.35, 95% CI 0.86–2.12; p= .272). There was no association between baseline data, pin-site infection, and type of dressing. Conclusions. At the research site, patients are referred to the OPD orthopaedic clinic from internal and external clinical sites e.g., from Hospital Consultants, General Practitioners and occasionally from multidisciplinary teams, throughout Ireland. Our retrospective observation study found that 97 lower limb external fixators were applied over a seven-year period which is lower than that reported in the literature. However, the study period included the COVID pandemic years (2020 and 2021) which saw a lower number of external fixators applied due to lack of theatre availability, cancelled admissions and social/travel restrictions that resulted in fewer accidents and lower limb trauma cases requiring external fixator application. The study highlighted a high infection rate with 70% of participants developing pin-site infection which is in keeping with findings reporting in other studies. Our study showed that neither an iodine nor dry gauze dressing was successful in preventing pin-site infection. In the iodine group 81% of participants developed infection compared to 60% in the dry gauze group. Given the lack of difference between the two groups consideration needs to be given to the continued use of iodine dressings in the prevention of pin-site infection. Pin-site infections result in a high portion of participants being prescribed antibiotics and, in an era, that stresses the importance of antimicrobial stewardship there is a need to implement effective infection prevention and control strategies that minimise infection. Further research is therefore needed to investigate more innovative medicated dressings such as those that contain anti-microbial or anti-bacterial agents

Introduction. External fixators are common surgical orthopaedic treatments for the management of complex fractures and in particular, the use of circular frame fixation within patients requiring limb reconstruction. It is well known that common complications relating to muscle length and patient function without rehabilitation can occur. Despite this there remains a lack of high-quality clinical trials in this area investigating the role of physiotherapy or rehabilitation in the management of these patients. We aim to complete a systematic review of rehabilitation techniques for patients undergoing external fixator treatment for Limb Reconstruction of the lower limb. Materials & Methods. A comprehensive search of AMED, CINAHL, MEDLINE and COCHRANE databases was conducted to identify relevant articles for inclusion, using a search strategy developed in collaboration with a research librarian. Inclusion criteria consisted of adults aged 18 years and over who have experienced leg trauma (open fracture, soft tissue damage), elective leg deformity corrective surgery, bone infection or fracture non-union who have been treated with the use of an external fixator for fixation. Specific exclusion criteria were patients below the age of 18 years old, patients with cancer, treatment of the injury with internal nail, patients who underwent amputation, the use of external fixators for soft tissue contracture management, editorials, comment papers, review papers, conference proceedings and non-English papers. Titles, abstracts, and full texts were screened for suitability by pairs of reviewers according to the inclusion and exclusion criteria using Rayyan QCRI online software. Any conflicts were resolved through discussion with three independent specialist senior reviewers. Following full text screening, references lists of included articles were manually searched to ensure that all relevant studies were identified. Due to lack of evidence, forward searching was also completed for studies included in the review. Data quality was assessed using the mixed methods appraisal tool and the CERT assessment tool was utilised to look at completeness of reporting of exercise interventions. Results. A total number of 832 articles were initially retrieved from our search once duplicate articles removed. After title and abstract screening, 45 articles remained for full text screening. Of these, 11 articles met our inclusion criteria and included for data extraction. Conclusions. We expect high variability of results due to our inclusion criteria and therefore plan to conduct a narrative synthesis to summarise the findings whilst measing against the mixed methods appraisal tool and CERT assessment scores to assess the data quality. We anticipate lower assessment scores within the fewer articles found and therefore poorer-quality data. We currently are in the process of finalising this data extraction. This will be completed ready for submission and potential presentation at the BLRS conference in March 2023

Introduction. This study aims to evaluate the effect of using different types of fixator on the quality of callus and complications during distraction osteogenesis in patients with achondroplasia. Materials and Methods. Forty-nine achondroplasia patients with a minimum follow-up of 36 months who underwent limb lengthening between 2005 and 2017 with external fixator only were included. Thirty-three of the patients underwent lengthening using classical Ilizarov frame, while spatial frame used for sixteen. Regenerate quality is evaluated according to the Li classification on the X-ray taken one month after the end of the distraction. Complications were noted in the follow-up period. Results. The mean age at the time of surgery was 8,6 years. The mean external fixation index (EFI) was 34,3 and 30,1 day/cm for spatial frame and Ilizarov frame respectively. Mean follow-up period of 161,62 months and mean fixator period of 257 days. Amount of lengthening was 7,2 cm for Ilizarov frame, and 7,5 cm for spatial frame. Rate of callus with good morphological quality seen at consolidation was 72,4% and 50% for Ilizarov and spatial frames respectively. Two groups show similar results of complication rates in terms of pin site infection, premature fibular consolidation, regenerate fracture, plastic deformation, knee contracture. However fibular nonunion rates were higher for Ilizarov-type fixator. Conclusions. Although spatial frame with computer assistance brings easier follow-up for deformity correction, Ilizarov-type external fixator show slightly higher rates of good quality callus during consolidation for patients with achondroplasia

Standard external fixators have always caused difficulties in visualising fracture fragments radiologically in both planes; for this reason multiple shots are often required, exposing patients and surgeons to high X-ray levels. Radiolucent external fixator X-calibre is composed of a new thermoplastic material reinforced by carbon fibres (PEEK-CA 30). The aim of this study is to evaluate the first 30 tibial fractures treated with this device. Thirty external fixators X-calibre were used to treat 30 patients with tibial fractures with an average age of 40.4 years (range 21–60). According to the AO classification we have treated nine type A, 13 type B, and eight C fractures. Five were open fractures. The average follow-up was of 18 months. The time of healing was the same as seen using the standard fixator and the average time was 115 days (range 85 to 190). One tibial plafond fracture healed with 8° valgus deformity and persistence of pain during walking. There was loss of reduction on the third day after surgery due to erroneous evaluation of the fracture, which presented a butterfly fragment. This new radiolucent fixator showed the following advantages: single use, sterile package, radiolucency, less X-ray exposure for patients and surgeons, deal mechanical performance for each use, reduced storage and sterilisation costs, less instrumentation, less weight and increased comfort for the patient, average healing time and results comparable to the existing radio-opaque system

Objectives. External fixators are the traditional fixation method of choice for contaminated open fractures. However, patient acceptance is low due to the high profile and therefore physical burden of the constructs. An externalised locking compression plate is a low profile alternative. However, the biomechanical differences have not been assessed. The objective of this study was to evaluate the axial and torsional stiffness of the externalised titanium locking compression plate (ET-LCP), the externalised stainless steel locking compression plate (ESS-LCP) and the unilateral external fixator (UEF). Methods. A fracture gap model was created to simulate comminuted mid-shaft tibia fractures using synthetic composite bones. Fifteen constructs were stabilised with ET-LCP, ESS-LCP or UEF (five constructs each). The constructs were loaded under both axial and torsional directions to determine construct stiffness. Results. The mean axial stiffness was very similar for UEF (528 N/mm) and ESS-LCP (525 N/mm), while it was slightly lower for ET-LCP (469 N/mm). One-way analysis of variance (ANOVA) testing in all three groups demonstrated no significant difference (F(2,12) = 2.057, p = 0.171). There was a significant difference in mean torsional stiffness between the UEF (0.512 Nm/degree), the ESS-LCP (0.686 Nm/degree) and the ET-LCP (0.639 Nm/degree), as determined by one-way ANOVA (F(2,12) = 6.204, p = 0.014). A Tukey post hoc test revealed that the torsional stiffness of the ESS-LCP was statistically higher than that of the UEF by 0.174 Nm/degree (p = 0.013). No catastrophic failures were observed. Conclusion. Using the LCP as an external fixator may provide a viable and attractive alternative to the traditional UEF as its lower profile makes it more acceptable to patients, while not compromising on axial and torsional stiffness. Cite this article: B. F. H. Ang, J. Y. Chen, A. K. S. Yew, S. K. Chua, S. M. Chou, S. L. Chia, J. S. B. Koh, T. S. Howe. Externalised locking compression plate as an alternative to the unilateral external fixator: a biomechanical comparative study of axial and torsional stiffness. Bone Joint Res 2017;6:216–223. DOI: 10.1302/2046-3758.64.2000470

Aim. External fixator knee arthrodesis is a salvage procedure mainly used in cases of end-stage infected total knee replacement (iTKR). A stable fixation combined with bone-ends compression is basic to achieve knee fusion in such a scenario but providing enough stability can be challenging in the presence of severe bone loss after multiple previous procedures. Compared with monoplanar configuration, a biplanar frame achieves improved coronal stiffness, while providing the advantages of good access to the wound and allowance of early ambulation. Our primary hypothesis stated that a biplanar frame would achieve higher and quicker fusion rate than a monolateral configuration. Method. We conducted a retrospective cohort study examining patients managed with biplanar external fixator knee fusion due to non-revisable iTKR between 2014 and 2018. We compared this group of patients with a historical cohort-control patient who had been previously published by our unit in 2013, since we switched from a monoplanar to a biplanar configuration for the management of this kind of complex end-stage iTKR. Primary end-points were fusion rate, time to achieve bone fusion and infection eradication rate. Limb-length discrepancy, pain level, patient satisfaction, and health-related quality of life were also evaluated. Results. A total of 29 cases were finally included; 8 patients were managed with a bilateral external fixator and 21 patients were managed with a monoplanar external fixator. In the biplanar configuration group, infection was eradicated in 100% of the patients, and fusion was achieved in all cases after 5.24 months on average. In comparison, in the monolateral configuration group, infection was eradicated in 18 (86%) out of 21, whereas fusion was achieved in 17 (81%) of the patients after a mean of 10.3 months (range, 4–16). Such difference was statistically significant (p<0.05). In both groups, postoperative pain was mild (VAS score 2,25 and 3,4, respectively) and patients expressed a high degree of satisfaction once fusion was achieved. Conclusions. External fixation knee fusion is a useful limb-salvage procedure in end-stage cases of knee PJI. According to our data, the use of a biplanar configuration allows us to reduce in half (10.3 vs 5.2 months, p<0.05) the time needed to achieve the solid bone fusion in such a complex scenario. In this cohort of previously multi-operated patients, the satisfaction is high, and the level of pain is low if a solid bone fusion free of infection is achieved

Background. External fixation for a fracture-dislocation to a joint like the elbow, while maintaining joint mobility is currently done after identifying the center of rotation under X-ray guidance, when applying either a mono-lateral or a circular fixator. Current treatment. using the galaxy fixation system by Orthofix, the surgeon needs to correctly identify the center of rotation of the elbow under X-ray guidance on lateral views. If the center of rotation of the fixator is not aligned with that of the elbow joint, the assembly will not work, i.e. the elbow will be disrupted on trying to achieve flexion or extension movements. Figures (A, B, C and D) summarize the critical steps in identifying the centre of rotation (Courtesy of Orthofix Orthopedics International). New design. This new idea aims to propagate the principle of sliding external fixation applied on the extensor side of a joint, with the limbs of the fixator being able to slide in and out during joint extension and flexion respectively, without hindering the joint movement. Taking the ulno-humeral joint as an example, it is enough to apply the sliding external fixator in line with the subcutaneous border of the ulna, and the pins in the sagital plane, without the need to use x-ray guidance to identify the center of rotation, which simplifies the procedure, and makes it less technically demanding. The sliding external fixator over the elbow involves two bars which accommodate half pins fixation with headless grip screws to hold the pins, identical to the Rancho cubes technique by Smith & Nephew, these slide snugly into sleeves, those sleeves linked together through a hinge behind the elbow, and the bars are spring loaded to the hinge through the inside of the sleeves, which means they will slid into the sleeves in extension and out in flexion. Length of the sleeve should prevent the bars from dislodgement, and the cross section of both the bars and the sleeves have to correspond to each other for the sleeves to accommodate the bars within them and to prevent rotational instability within the construct itself. Summary. Applying an external fixator on the extensor surface is an idea could lead to major changes in external fixation product design, the ulno-humeral joint is taken as an example, and other joints could also be addressed taking in consideration joint size and anatomical structures at risk. The sliding technique makes the application easier, without the need to X-ray guided identification of the center of rotation

Purpose of study. Pin tract infection is a common complication with the use of circular external fixators. HIV infection itself is frequently quoted as a relative contra-indication for the use of circular external fixators for complex trauma and limb reconstruction in HIV seropositive individuals. Methods. Between July 2008 and December 2012, 286 patients were treated with circular external fixators at our tertiary level government hospital. A retrospective review was undertaken to compare the rate and severity of pin tract sepsis in HIV seropositive and seronegative patients. Results. Two-hundred and twenty-three patients met the inclusion and exclusion criteria. Pin tract sepsis was found in 51 patients overall (22.8%). The incidences of pin tract sepsis in the seropositive group, seronegative group, and the unknown group are 22.5%, 22.8% and 23.8% respectively, and the differences were not statistically significant. The severity of pin tract sepsis in the individual groups was also similar. Conclusion. Pin tract sepsis is a common complication with the use of circular external fixators. The incidence and severity of pin tract infection is not influenced by HIV infection, and should not in itself deter from the use of circular external fixators for complex trauma and limb reconstruction in HIV seropositive individuals. NO DISCLOSURES

Introduction. The objective of this study is to report the first cases of femoral lengthening in children using Ilizarov fixator. Materials and Methods. We carried out a retrospective study about the cases of femoral lengthening done in 2010 to 2020 in our BARI-ILIZAROV Orthopaedic centre Dhaka. Results. 48 lengthening were done during this period using Ilizarov fixator. The procedure was done incongenital bone diseases in 20 cases and after a distal femoral epiphysiodesis in 10 cases. The mean age at surgery was 12.8 years. Lengthening was required in all patients and an axis correction was required in 16 of 26 cases. The mean lengthening was 5.9 cm. The healing index was 45.5 day/cm (25.5–62). We noticed 8 knee stiffness and 5 broken wires. Knee Stiffness were corrected by Judet'squadricepsplasty and 6 broken wires were replaced by new wires. The goal of lengthening was reached in all cases. The goal of axis correction was reached in 98.5% of cases. Conclusions. Ilizarov technique allows to do accurate lengthening and axis correction and it is a unique reliable external fixator for femoral lengthening in children

Vascularized bone grafts (VFG) have brought great benefits in the field of reconstruction of the lower extremity. However, complications such as fracture of the grafted fibula and delayed union are sometimes seen. Not only to prevent these complications but also for stability after fracture of the grafted fibula, the Ilizarov external fixator is a very useful option. We report here the clinical results of cases treated by VFG combined with Ilizarov external fixator for reconstruction of the lower extremity. We have performed 53 vascularized fibula transfers to reconstruct lower extremities. An Ilizarov external fixator was used for the initial immobilization in 7 (2 femur, 5 tibia) and for delayed union or fracture of the grafted fibula in 2 cases of congenital pseudoarthrosis of the tibia. All patients achieved good bone reconstruction. All are able to walk without a brace except for one congenital case. The average period to achieve bony fusion was 13 months in femur cases, 6 months in adult tibia cases and 2 months in congenital cases. The average periods to walk without a brace were 14 months, 8 months and 10 months respectively. However, it took 9 months and 28 months to achieve bony union in the cases with delayed union or fracture of the grafted fibula. In the reconstruction of the lower extremities using VFG, the determining factor in method selection is whether sufficient mechanical support is available. An Ilizarov external fixator for immobilization permits the patient to walk as soon as possible. Dynamization from this semi-rigid external fixator causes bone hypertrophy and improved incorporation of the graft

Purpose of the study: These fractures, and the patients, are generally unstable. Mortality associated with these fractures remains high. It is mainly due to the haemorrhagic risk of the presacral venous plexus and the iliac system. Different techniques have been described to control the haemorrhage: pelvic girdle, embolisation, ligature of the iliac arteries, pelvic packing, pelvis clamp or external fixator. Our objective was to analyse our series of fractures of this type in order to optimise patient outcome. Material and methods: A prospective study was undertaken from January 2003 to December 2006. Among 450 multiple injury patients, 68 presented an unstable fracture of the pelvis, type B or C. The 38 patients included in this series were haemodynamically unstable. The mean ISS for these patients was 53, mean age 38.6 years (range 24–51). Fractures were diagnosed on plain x-rays of the pelvis, ap view, completed by a total body scan. Results: All patients were victims of high-energy traffic accidents and were managed using the ATLS protocol. Five patients died early despite intensive care. The patients were divided into three groups: group X: 19 patients treated with a first-intention external fixator, with or without arteriography, 18 patients survived, 94%; group Y: 8 patients treated with a first-intention external fixator with arteriography and followed by laparotomy, 7 patients survived, 87%; group Z: 6 patients had laparotomy without an external fixator, 6 patients died, 100% mortality. Conclusion: In our experience, the best way to control bleeding associated with unstable fractures of the pelvis is as follows: pelvic girdle at the scene of the accident to the emergency room, emergency external fixation followed by laparotomy if the ultrasound is positive. False positives occur due to suffusion of the retroperitoneal haematoma. Emergency laparotomy without prior external fixation of the pelvis lead to 100% mortality in our series. Similarly pelvic packing or the retroperitoneal approach cannot be proposed without exploration

Long-term survival and favourable outcome of implant use are determined by bone-implant osseointegration and absence of infection near the implants. As with most diseases, prevention is the preferred approach. Silver ion doped calcium phosphate based ceramic coating (Silveron®) for implant coating has been shown previously to be a potent antimicrobial agent as indicated by in vitro testing. The present study reports on clinical experience using silver ion doped calcium phosphate based ceramic coated external fixator pins as surgical treatment in the management of chronic osteomyelitis and open fractures. Ten patients had external fixators: six for open fractures of ankle, three for chronic osteomyelitis of the femur, one for tibia pseudoarthrosis. The electrospray method was used for coating the external fixator pins with silver ion doped calcium phosphate-based ceramics. A radiofrequency energy source was used to sinter the coated pins. Microbiological, roentgenographic, toxic and biochemical analyzes of patients were carried out. Wound debridement, and subsequent wound care resulted in control of the infection in three chronic osteomyelitis and in healing of seven fractures after follow-up ranging from three to six months. In total 67 pins were used in 10 patients but only one pin was positive microbiologically in one patient. Collectively, these data clearly illustrate that the toxic effects of silver were not observed at the doses used. Silver ion doped calcium phosphate based ceramic coating (Silveron®) can be used to prevent infection associated with the implant

Purpose of the study: In the spastic quadriplegic non-ambulatory child, hip dislocation with severe adduction is a painful situation compromising perineal hygiene and local care as well as positioning in bed or wheel chair. We describe a method of treatment using Castle’s femoral resection-interposition arthroplasty and an external fixator to prevent proximal migration of the remnant femur. Description: Resection of the proximal femur with articulated distraction of the hip using an external fixator was performed in eight children (11 hips) with cerebral palsy. All patients (five boys, three girls, mean age 15 years) had painful neurological disorders with chronic hip dislocation incompatible with the sitting position and compromising perineal hygiene. The operation, described by Castle, consisted in subtrochanteric resection and suture of the quadriceps muscle around the femoral cut. The capsule detacted from the femur was closed around the acetabulum. The abductors were sutured between the shaft and the acetabulum in order to ensure interposition of enough soft tissue. An external fixator (Orthofix®) was installed for 90 days. This method has the advantage of producing the necessary distraction while allowing immediate mobility (hip extension flexion) and good balance in the sitting position as well as better perineal hygiene compared with the preoperative situation. At six months, there was a clear clinical improvement in terms of pain relief, tolerance to the sitting position, and perineal hygiene with a significant increase in joint motion (flexion, extension, abduction). Proximal migration of the femur was observed in one case after removing the external fixator. There were no cases of recurrent adduction deformity, stiffness or bone hypertrophy. Conclusion: Proximal resection of the femur with capsular interposition arthroplasty and articulated distraction with an external fixator decreases the pain of the dislocated spastic hip. This method is a reliable salvage alternative for painful hip dislocation in cerebral palsy children. Use of an articulated external fixator for the distraction enables immediate postoperative mobilization and the sitting position in a wheel chair, improving patient comfort compared with the classical Russell also described by Castle

Objective: The main treatment for unstable distal radius fracture in Québec consists in pinning and cast, with secondary shortening and displacement responsible for lack of motion. The goal of the study is to compare clinical and radiological results after treatment with non-bridging external fixator compared to pinning and cast, with restoration of grip strength as main clinical outcome. Method: Between June 2003 and June 2005, 120 consecutive patients admitted for unstable extra-articular distal radius fracture were randomized in the 2 groups. Early mobilisation was allowed in the group with external fixator, and patients in the other group had pins and cast for 6 weeks. Follow-up was completed after 6 months with determination of clinical and radiological data for the both wrists. 110 patients completed the study, with 2 comparative groups for epidemiologic and radiological criteria (n = 63 for pins and 57 for external fixator). Results: Grip strength was significantly better in the fixator group at 3 months (68,36%;p< 0,001) and 6 months (98,26%;p< 0,001). Active ROM was better and obtained earlier in the fixator group in all directions (p< 0,001). Fixator prevent shortening and secondary displacement in a highly significant way (p< 0,001). No difference in pain medication, but fixator group could begin occupation earlier (p< 0,001). Conclusion: Non-bridging external fixator is a treatment of choice for unstable extra-articular distal radius fractures. The immediate stability allows in all patients (without influence of age, bone quality or fracture displacement) early mobilisation, prevent secondary displacement, and gives earlier and better functional results

Management of compound fractures of the tibial diaphysis forms a large proportion of the trauma workload at Tygerberg Hospital. This prompted a prospective study to compare external fixation with unreamed intramedullary nailing in the treatment of grade-I, II, IIIA and IIIB compound fractures of the tibial diaphysis. For a year we followed up 18 skeletally mature patients. External fixation was used in eight patients, four of whom had grade II fractures, two grade IIIA and two grade IIIB. Ten fractures (two grade-I, one grade-II, two grade IIIA and five grade IIIA) were stabilised with an unreamed intramedullary nail. Except for the method of fixation, fracture care was the same: all patients received antibiotics on admission, primary fracture debridement occurred within 24 hours and redebridement within 48 to 72 hours of injury. Definitive fixation by external fixator or intramedullary nailing, with wound closure, skin graft and/or myofasciocutaneous flapping was done within a week of injury. We assessed rates of infection, hardware failure, mal-union, additional procedures, hospital stay and time to union. There were no cases of wound infection in either group, but a progression of fracture gap in one patient treated by intramedullary nailing may suggest sub-clinical infection. All patients treated with external fixators developed pin-tract infection, and in five patients the external fixator had to be removed before union. One external fixator pin failed and was re-inserted under anaesthetic. There were two intramedullary nail locking screw failures, but they required no intervention. Additional procedures required in the group treated by external fixator far outnumbered those needed in the intramedullary nailing group. Fracture alignment appeared more anatomical in the patients treated by intramedullary nailing. We found no significant difference in healing rates or length of hospital stay. Our results suggest that intramedullary nailing is the more efficient method of fracture stabilisation

The use of the Dynastab K external fixator in the treatment of the tibial plateau fractures. The aim of the study was the assessment of the clinical use of Dynastab K (knee) external fixator in the treatment of intraarticular fractures of the proximal tibia. The study was conducted in the Department of Orthopaedics and Rehabilitation Warsaw Medical University. Between November 2004 and December 2007, 29 patients were included in the study (12 females and 17 males). In the experimental group, consisting of 15 patients (7 females and 8 males) open reduction and fixation of the fracture was performed. After that Dynastab K external fixator was implanted to the femur and tibia with the use of pins. On the second day after the surgery rehabilitation of the knee joint was started. Fixator was being held on the lower limb for 6 – 8 week. In the control group (14 patients – 5 females and 9 males) after open reduction and fixation of the fracture, knee orthosis was applied. Orthosis was set up in 15 degrees flexion. After that time the rehabilitation was started. The final follow up visit was performed about 34 weeks after the surgery. The amount of articular depression, the range of motion of the knee joint, the amount of pain and the condition of soft tissues around pins were assessed during the study. The clinical and radiological outcomes were determined according to Rasmussen’s system and the condition of soft tissues with the use of Dahl’s scale. Resnick and Niwoyama criteria were used for grading of post-traumatic osteoarthrosis and Visual Analogue Scale for pain intensity. Subjective evaluation of knee function was performed by the self-made scale. There were no statistically important differences in the amount of articular depression before the operation, after reduction and on the last follow-up visit, between the experimental and control group. The mean range of motion of the knee joint was 127,5 degrees in the experimental group and 118,3 degrees in the control group. In the experimental group the amount of pain around the knee was gradually diminished after the operation, whereas in the control group the amount of pain was sharply reduced, but after unblocking the orthosis rised significantly. There were not noticed any pin site infection. 10 patients (66,7%) from the experimental group and 7 (50%) from the control group achieved very good results in the radiological scale. The results in the clinical scale were very good at 6 patients (40,0%) from the experimental group and at 3 patients (21,4%) from the control group. During the last follow-up visit the subjective evaluation of the knee joint function was 0,64 points better in the group treated with the Dynastab K external fixator