Aims. The modified Radiological Union Scale for Tibia (mRUST) fractures score was developed in order to assess progress to union and define a numerical assessment of fracture healing of metadiaphyseal fractures. This score has been shown to be valuable in predicting radiological union; however, there is no information on the sensitivity, specificity, and accuracy of this index for various cut-off scores. The aim of this study is to evaluate sensitivity, specificity, accuracy, and cut-off points of the mRUST score for the diagnosis of metadiaphyseal fractures healing. Methods. A cohort of 146 distal femur fractures were retrospectively identified at our institution. After excluding AO/OTA type B fractures, nonunions, follow-up less than 12 weeks, and patients aged less than 16 years, 104 sets of radiographs were included for analysis. Anteroposterior and lateral femur radiographs at six weeks, 12 weeks, 24 weeks, and final follow-up were separately scored by three surgeons using the mRUST score. The sensitivity and specificity of mean mRUST score were calculated using clinical and further radiological findings as a gold standard for ultimate fracture healing. A receiver operating characteristic curve was also performed to determine the cut-off points at each time point. Results. The mean mRUST score of ten at 24 weeks revealed a 91.9% sensitivity, 100% specificity, and 92.6% accuracy of predicting ultimate fracture healing. A cut-off point of 13 points revealed 41.9% sensitivity, 100% specificity, and 46.9% accuracy at the same time point. Conclusion. The mRUST score of ten points at 24 weeks can be used as a viable screening method with the highest sensitivity, specificity, and accuracy for healing of metadiaphyseal femur fractures. However, the cut-off point of 13 increases the specificity to 100%, but decreases sensitivity. Furthermore, the mRUST score should not be used at six weeks, as results show an inability to accurately predict eventual fracture healing at this time point. Cite this article: Bone Jt Open 2021;2(10):796–805

Aims. Occult (clinical) injuries represent 15% of all scaphoid fractures, posing significant challenges to the clinician. MRI has been suggested as the gold standard for diagnosis, but remains expensive, time-consuming, and is in high demand. Conventional management with immobilization and serial radiography typically results in multiple follow-up attendances to clinic, radiation exposure, and delays return to work. Suboptimal management can result in significant disability and, frequently, litigation. Methods. We present a service evaluation report following the introduction of a quality-improvement themed, streamlined, clinical scaphoid pathway. Patients are offered a removable wrist splint with verbal and written instructions to remove it two weeks following injury, for self-assessment. The persistence of pain is the patient’s guide to ‘opt-in’ and to self-refer for a follow-up appointment with a senior emergency physician. On confirmation of ongoing signs of clinical scaphoid injury, an urgent outpatient ‘fast’-wrist protocol MRI scan is ordered, with instructions to maintain wrist immobilization. Patients with positive scan results are referred for specialist orthopaedic assessment via a virtual fracture clinic. Results. From February 2018 to January 2019, there were 442 patients diagnosed as clinical scaphoid fractures. 122 patients (28%) self-referred back to the emergency department at two weeks. Following clinical review, 53 patients were discharged; MRI was booked for 69 patients (16%). Overall, six patients (< 2% of total; 10% of those scanned) had positive scans for a scaphoid fracture. There were no known missed fractures, long-term non-unions or malunions resulting from this pathway. Costs were saved by avoiding face-to-face clinical review and MRI scanning. Conclusion. A patient-focused opt-in approach is safe and effective to managing the suspected occult (clinical) scaphoid fracture. Cite this article: Bone Jt Open 2024;5(2):117–122

Accurate evaluation of lower limb coronal alignment is essential for effective pre-operative planning of knee arthroplasty. Weightbearing hip-knee-ankle (HKA) radiographs are considered the gold standard. Mako SmartRobotics uses CT-based navigation to provide intra-operative data on lower limb coronal alignment during robotic assisted knee arthroplasty. This study aimed to compare the correlation between the two methods in assessing coronal plane alignment. Patients undergoing Mako partial (PKA) or total knee arthroplasty (TKA) were identified from our hospital database. The hospital PACS system was used to measure pre-operative coronal plane alignment on HKA radiographs. This data was correlated to the intraoperative deformity assessment during Mako PKA and TKA surgery. 443 consecutive Mako knee arthroplasties were performed between November 2019 and December 2021. Weightbearing HKA radiographs were done in 56% of cases. Data for intraoperative coronal plane alignment was available for 414 patients. 378 knees were aligned in varus, and 36 in valgus. Mean varus deformity was 7.46° (SD 3.89) on HKA vs 7.13° (SD 3.56) on Mako intraoperative assessment, with a moderate correlation (R= 0.50, p<0.0001). Intraoperative varus deformity of 0-4° correlated to HKA measured varus (within 3°) in 60% of cases, compared to 28% for 5-9°, 17% for 10-14°, and in no cases with >15° deformity. Mean valgus deformity was 6.44° (SD 4.68) on HKA vs 4.75° (SD 3.79) for Mako, with poor correlation (R=0.18, p=0.38). In this series, the correlation between weightbearing HKA radiographs and intraoperative alignment assessment using Mako SmartRobotics appears to be poor, with greater deformities having poorer correlation

Gram staining is used as an initial indicator of synovial joint infection but has widely varied false negative rates in the literature. Clinical decisions are often made on the basis of gram stain results, such as whether a patient requires urgent surgery, and therefore it is important to understand the tests efficacy. A retrospective review of synovial fluid aspirates in NHS Tayside for the years 2017 and 2018 was performed from the departmental microbiology database. Aspirates of large joints were included (hip, knee, shoulder, wrist, elbow, ankle). Any joints with prosthesis were excluded, including fixation metalwork. Any abscess overlying a joint that was not proven to penetrate the joint was also excluded. Initial gram stain results and formal culture results were reviewed. Final culture results were considered to be the gold standard to compare gram stain results to. 2167 samples were reviewed. Of these 1552 were excluded base on inclusion criteria. Of the remaining 615, 120 (19.5%) were culture positive. There were 33 positive gram stain results, 1 false positive and 32 true positive results. The sensitivity was 26.67% with a specificity of 99.80% (p=0.0001). The negative predictive value is 84.88% (CI 83.44% – 86.21%). These results show that gram stain tests of native joints have a low sensitivity and poor negative predictive value. This is reflected in the current literature with prosthetic joints. Based on this study caution should be used when interpreting a negative gram stain result with appropriate safety netting and follow up required alongside clinical assessment

Purpose. Angular deformity in the lower extremities can result in pain, gait disturbance, cosmetic deformity and joint degeneration. Up until the introduction of guided growth in 2007, which has since become the gold standard, treatment for correcting angular deformities in skeletally immature patients had been either an osteotomy, a hemiepiphysiodesis, or the use of staples. Methods. We reviewed the surgical records and diagnostic imaging in our childrens hospital to identify all patients who had guided growth surgery since 2007. All patients were followed until skeletal maturity or until their metalwork was removed. Results. 113 patients, with 147 legs were assessed for eligibility. Three were excluded for various reasons including inadequate follow-up or loss of records. Of the 144 treated legs which met the criteria for final assessment 32 (22.2%) were unsuccessful, the other 112 (77.8%) were deemed successful at final follow up. Complications were few, but included infection in one case and metal failure in another. Those with a pre-treatment diagnosis of idiopathic genu valgum/genu varum had a success rate of 83.6%. Conclusions. In our hands, guided growth had a seventy-eight percent success rate when all diagnosis were considered. Those procedures that were unlikely to be successful included growth disturbances due to mucopolysaccharide storage disease (28% failure rate), Blounts disease (66.6% failure rate) and achondroplasia (37.5% failure rate). If you exclude those three diagnoses, success rate for all other conditions was 81.4%. We continue to advocate the use of guided growth as a successful treatment option for skeletally immature patients with limb deformity

Two-stage revision is the gold standard for managing infected total hip and knee arthroplasties. The aim was to assess the effect of duration between stages on reinfection rate at one year. A systematic review and meta-analysis was conducted on all studies investigating reinfection rate with documented interval between first and second stages. Total hip (THR) and total knee replacements (TKRs) were included but analysed separately. The effect size of studies was stratified according to sample size then with study quality. All papers up until November 2015 (including non-English language) were considered. From 3827 papers reviewed, 38 cohorts from 35 studies were included, comprising 23 THR and 15 TKR groups. Average study quality was 5.6/11 (range 3–8). Funnel plots calculated to assess for bias indicated significant asymmetry at lower sample sizes in both groups. In the TKR group, studies with 0–3 months between stages showed a significantly lower reinfection rate than 3–6 months (9.5% 21/222 vs 20.7% 28/135, p<0.01). A similar trend was seen in the THR group (6.1% vs 10.7%, p<0.05). No difference was observed for either group between 3–6 and 6–9 months. There is no consensus regarding the appropriate duration between surgeries in two-stage revisions for infection. Studies stratified by sample size and quality indicate an increased reinfection rate past three months. Published guidance is no substitute for clinical decision-making but the conclusions from this study are to recommend against routine delay of more than 3 months between first and second stage revisions for infected THR and TKR

Aims

To investigate if preoperative CT improves detection of unstable trochanteric hip fractures.

Aims

Ankle fracture fixation is commonly performed by junior trainees. Simulation training using cadavers may shorten the learning curve and result in a technically superior surgical performance.

Common cell based strategies for treating bone defects require time-consuming and expensive isolation and expansion of autologous cells. We developed a novel expedited technology creating gene activated muscle grafts. We hypothesized that BMP-2 activated muscle grafts provide healing capabilities comparable to autologous bone grafting, the clinical gold standard. Two male, syngeneic Fischer 344 rats served as tissue donors. Muscle tissue was harvested from hind limbs and incubated with an adenoviral vector carrying the cDNA encoding BMP-2. Bone tissue was harvested from the iliac crest. Segmental bone defects were created in the right femora of 12 rats and were filled with either BMP-2 activated muscle tissue or bone grafts. After 8 weeks, femora were evaluated by radiographs, microCT, and biomechanical tests. BMP-2 activated muscle grafts and autologous bone grafts resulted in complete mineralization and healing, as documented by radiographs and microCT. Bone volume in the muscle graft defects (33+/-12mm3) was similar to autologous bone graft defects (39+/-5mm3). Torque at failure of the two groups was statistically indistinguishable (240+/-115 Nmm vs. 232+/-108Nmm). In previous experiments we demonstrated that the large segmental defect model in this study will not heal with either empty defects or non-activated muscle grafts. Our findings therefore demonstrate that BMP-2 gene activation of muscle tissue effectively stimulates defect healing similar to autologous bone grafts

To validate the Modified Forgotten Joint Score (MFJS) as a new patient-reported outcome measure (PROM) in hip and knee arthroplasty (THR/TKR) against the UK's gold standard Oxford Hip and Knee Scores (OHS/OKS). The MFJS is a new assessment tool devised to provide a greater discriminatory power, particularly in well performing patients. It measures an appealing concept; the ability of a patient to forget about their artificial joint in everyday life. Postal questionnaires were sent out to 400 THR and TKR patients who were 1–2 years post-op. The data collected from the 212 returned questionnaires was analysed in relation to construct and content validity. 77 patients took part in a test-retest repeatability assessment. The MFJS proved to have an increased discriminatory power in high-performing patients in comparison to the OHS and OKS, highlighted by its more normal frequency of distribution and reduced ceiling effects. 30.8% of patients (n=131) achieved excellent OHS/OKS scores of 42–48 this compared to just 7.69% of patients who achieved a proportionately equivalent MFJS score of 87.5–100. The MFJS proved to have an increased test-retest repeatability based upon its intra-class correlation coefficient of 0.97 compared to the Oxford's 0.85. The MFJS provides a more sensitive tool in the assessment of well performing hip and knee arthroplasties in comparison to the OHS/OKS. The MFJS tests the concept of awareness of a prosthetic joint, rather than pain and function and therefore should be used as adjunct to the OKS/OHS

Aims

Frailty greatly increases the risk of adverse outcome of trauma in older people. Frailty detection tools appear to be unsuitable for use in traumatically injured older patients. We therefore aimed to develop a method for detecting frailty in older people sustaining trauma using routinely collected clinical data.

Two stage revision for infection is considered the gold standard with a success rate of 80–90%. Overall functional outcomes of these patients are commonly overlooked. There is a trend towards single stage revision to improve functional outcomes. We examined the functional scores of 2 stage revision for total hip arthroplasty (THR) and total knee arthroplasty (TKR). 72 revisions were identified over 9 years: 30 THR and 42 TKR. Two year survivorship was 96% in THR revision and 88% TKR revision. Five year survival was 83% and 84% respectively. 50 patients (without recurrence of infection) had recorded functional scores at a minimum of 1 year. The mean Harris-hip score (HHS) of THR was 75 (21 patients) prior to developing symptoms of infection. Once infected, the mean score fell to 46. At 1 year post revision it returned to 77. At 3 years HHS of 78 (12 patients) and at 5 yrs 62 (3 patients). The mean knee society score (KSS) of TKR was 66 (29 patients) prior to developing symptoms of infection. Once infected, the mean score fell to 34. At 1 year post revision it returned to 73. At 3 years KSS of 76 (16 patients) and at 5 years 62 (10 patients). We conclude that functional scores of staged revisions of infected THR and TKR return to pre-morbid levels within a year of completing the second stage. Although single stage revision may have a quicker return to function, by 1 year, staged revision has comparable results

The Ponseti method has been proven to be the gold standard of treatment for clubfoot. The question however remains about the treatment of atypical and complex feet with this method. The Ponseti technique has been used to treat all clubfeet at the our institution for the past 10 years. We interviewed 70 patients (114 affected feet) ages 5–9 regarding the current state of their clubfoot using the 10 item Disease Specific Instrument (DSI) developed by Roye et al. Of these, 16 patients had a complex foot defined by a transverse medial crease. The DSI scores from all patients were transformed onto a 100 point scale and compared based on overall score as well as functional outcome and satisfaction. There was no significant difference in the overall scores with a mean of 76.43 (sd= 21.1) in patients who did not have a complex deformity compared to a mean of 79.17 (sd= 19.4) in those who did have a complex foot (p=0.644). On the functional subscale the mean scores were 74.07 (sd=27.1) and 89.58 (sd=25.9) for patients who had non-complex and complex feet, respectively (p=0.474). Regarding satisfaction, the non-complex group had a mean score of 79.51 (sd=19.7) compared to the mean of 78.75 (sd=16.7) in the complex group (p=0.888). Primary treatment with the Ponseti method achieves very successful correction of the clubfoot deformity with good outcome scores. Furthermore, even in patients with a complex deformity, the Ponseti method still achieves equally successful outcomes

Background. Impaction bone grafting with milled human allograft is the gold standard for replacing lost bone stock during revision hip surgery. Problems surrounding the use of allograft include cost, availability, disease transmission and stem subsidence (usually due to shear failure of the surrounding allograft). Aims. To investigate various polymers for use as substitute allograft. The ideal graft would be a composite with similar mechanical characteristics as allograft, and with the ability to form de novo bone. Methods. High and low molecular weight (MW) forms of three different polymers (polylactic acid (PLA), poly (lactic-co-glycolic) acid (PLGA) and polycaprolactone (PCL)) were milled, impacted into discs, and then tested in a custom built shear testing rig, and compared to allograft. A second stage of the experiment involved the addition of skeletal stem cells (SSC) to each of the milled polymers, impaction, 8 days incubation, and then tests for cell viability and number, via fluorostaining and biochemical (WST-1, DNA) assays. Results. The shear strengths of both high/ low MW PLA, and high/low MW PLGA were significantly higher than those of milled allograft but high and low MW PCL was poor to impact, and had significantly lower shear strengths. Fluorostaining showed good cell survival on high MW PLA, high MW PCL and both high and low MW PLGA. These findings were confirmed on both DNA and WST-1 assays. Conclusions. High MW PLA as well as high and low MW PLGA performed well both in mechanical testing and cell compatibility studies. These three polymers are good contenders to produce a living composite for use as substitute human allograft in impaction bone grafting

Background. Overlooked compartment syndrome represents a devastating complication for the patient. Invasive compartment pressure measurement continues to be the gold standard. However, repeated measurements in uncertain cases may be difficult to achieve. We developed a new, noninvasive method to assess tissue firmness by pressure related ultrasound. Methods. Decreased tissue elasticity by means of rising compartment pressures was mimicked by infusion of saline directly into the anterior tibial compartment of 6 human specimens post mortem. A pressure transducer (Codman) monitored the pressure of the anterior tibial compartment. A second transducer was located in a saline filled ultrasound probe head to allow a simultaneous recording of the probe pressure provoked by the user. The ultrasound images were generated at 5 and 100mmHg probe pressures to detect the tissue deformity by B-mode ultrasound. The fascial displacement was measured before and after compression (d). Subsequently, increments of 5mmHg pressure increases were used to generate a standard curve (0–80mmHg), thus mimicking rising compartment pressures. The intra-observer reliability was tested using 10 subsequent measurements. A correlation was determined between d and the simulated intacompartmental pressure (ICP) in the compartment. The Pearson correlation coefficient (r) was calculated. The reliability determined by the kappa value and a regression analysis was performed. Results. With rising compartmental pressure, a concordant consistent correlation between d and ICP occurred. The Pearson coefficient was significant at r=0.979 and the intra-observer value kappa (k) showed a statistically good reliability (k10=0.73 and k70=0.79). Within a pressure ranging from 5–35mmHg there was an almost linear behavior, with decreasing elasticity and tissue movement in case of raising ICP. Conclusions. Pressure related ultrasound emphasized as a reliable tool to determine the correlation between the measured compartmental displacement and the raising intracompartmental pressures. This may help to improve the clinical assessment of the compartment elasticity by the physician. Further studies are required to investigate whether the good correlation also applies for the clinical scenario. However, this new method may be useful to monitor trends in the compartment pressures and may help to avoid delayed decision of fasciotomy

PURPOSE. Osteochondral talar defects (OCDs) are sometimes located so far posteriorly that they may not be accessible by anterior arthroscopy, even with the ankle joint in full plantar flexion, because the talar dome is covered by the tibial plafond. It was hypothesized that computed tomography (CT) of the ankle in full plantar flexion could be useful for preoperative planning. The dual purpose of this study was, firstly, to test whether CT of the ankle joint in full plantar flexion is a reliable tool for the preoperative planning of anterior ankle arthroscopy for OCDs, and, secondly, to determine the area of the talar dome that can be reached by anterior ankle arthroscopy. METHODS. In this prospective study, CT-scans with sagittal reconstructions were made of 46 consecutive patients with their affected ankle in full plantar flexion. In the first 20, the distance between the anterior border of the OCD and the anterior tibial plafond was measured both on the scans and during anterior ankle arthroscopy as the gold standard. Intra- and interobserver reliability of CT as well as agreement between CT and arthroscopy were assessed by intraclass correlation coefficients (ICCs) and a Bland and Altman graph. Next, the anterior and posterior borders of the talar dome as well as the anterior tibial plafond were marked on all 46 scans. Using a specially written computer routine, the anterior proportion of the talar dome not covered by the tibial plafond was calculated, both lateral and medial, indicating the accessible area. RESULTS. The distance between the anterior border of the OCD and the anterior tibial plafond ranged from −3.1 to 9.1 mm on CT and from −3.0 to 8.5 on arthroscopy. The intra- and interobserver reliability of the measurements made on CT-scans were excellent (ICC > 0.99, p < 0.001). Likewise, agreement between CT and arthroscopy was excellent (ICC=0.97; p < 0.001); only one patient showed a difference of more than 2.0 mm. The anterior 47.3 ± 6.8% (95%CI, 45.2–49.3) of the lateral talar dome, and 47.7 ± 7.0% (95%CI, 45.7–49.8) of the medial talar dome was not covered by the tibial plafond. CONCLUSIONS. Computed tomography of the ankle joint in full plantar flexion is an accurate preoperative planning method to determine the arthroscopic approach for treatment of OCDs of the talus. Almost half of the talar dome is directly accessible by anterior ankle arthroscopy

Shoulder pain or loss of normal range of motion is a frequent complaint in the outpatient clinic. Of these presentations, rotator cuff injury is a common cause. This can range from mild, transient inflammation of the tendons, to partial tears of tendons, or even full thickness tears. Disruption of the tendons can occur from forceful forward throwing actions undertaken in some sports, for example baseball pitching, more commonly in the UK however, chronic impingement can lead eventually to a tendon tear-usually seen in an older population. Current methods of investigation of such injuries after clinical history and examination, includes plain film radiography, ultrasonography, magnetic resonance imaging and arthrography. We decided to look at how ultrasound can be used in the district general hospital for investigation of such injuries. Aims. To determine the accuracy of ultrasound as an investigative tool for clinically suspected rotator cuff tears. Methods. Seventy-five consecutive ultrasonographic study reports, in patients who subsequently underwent arthroscopic examination, were scrutinised and correlated with surgical findings. From this, sensitivity and specificity of ultrasound at this district general hospital were calculated. In addition, this data was compiled for each of the three Consultant Radiologists in order to assess the operator dependent nature of ultrasound. Results. Of the 74 cases analysed, 43 (58.1%) had full correlation with the arthroscopy findings, 13 (17.6%) had mixed correlation, and 18 cases (24.3%) had no correlation between the ultrasound and arthroscopy report. The sensitivity and specificity of ultrasound at our institution was 0.76 and 0.8 respectively with regards to a tear being detected at ultrasound and then visualised during surgery. Conclusions. There is no current national guidance as to which imaging modality should be first line following clinical examination. Magnetic resonance arthrography, widely thought of as being the gold standard investigation, is not only expensive and possible only in certain centres, but is also invasive, time consuming, and has many relative contraindications. Ultrasound offers a clinical advantage by allowing the radiologist to speak to the patient and assess their range of motion whilst performing the study. This interaction is lost totally in MRI, CT and even MR arthrography. Our study shows that ultrasonography can be quite accurate in identifying a rotator cuff tear. Although it is operator-dependent, ultrasound should be considered more often as a first-line imaging tool for suspected rotator cuff tears as it is relatively inexpensive, quick, and most importantly dynamic

Actually conservative treatment and/or minimal invasive surgical approach is considered the gold standard in the treatment of CF all around the world. Two main italian pediatric hospitals (Bambino Gesù in Rome and Meyer in Florence) will present own series in order to realize how the two methods (Ponseti in Rome and Seringe in Florence) can be used, the right indications for each method and sharp limits as well. The aim of this study is to compare two methods for evaluating their effectiveness and their applicability. Patients, Methods and Results. Rome series: from 1998 to 2009 pediatric hospital Bambino Gesù in Rome had treated 1350 patients with the Ponseti method (1980 feet). All feet had been scored according to Pirani classification. At age of 3–4 months, the 72% of feet treated had minimal surgery consisted in transversal tenotomy of achille's tendon. Casting for further 3 weeks and Denis-Brown splint wore full time until walking age and during the night only for 3 years after walking age. Surgery had been performed in 72% of case and surgery has been directly related to CF severity. Florence series: the Unit of Pediatric Orthopaedics Meyer Children's Hospital of Florence was born in January 2004 and therefore the series includes patients from January 2004 to December 2009. 173 patients (239 feet) were treated. Dimeglio's classification was used. At the age of 4–5 months were treated with tenotomy of Achille's tendon 51,9% of patients, mainly stage 3, and immobilization in long leg cast was used only for three weeks after surgery. Discussion. Minimally invasive treatment for CF is universally considered one of the best way to correct the deformity without using the extensive surgery that often causes stiffness, pain and shoes discomfort in adulthood. The long-term results of two series are similar and this enhance our mind that not invasive method for CF treatment is effective, low-cost, with very low rate of recurrence, only if applied following strictly the protocol. In our series in fact the highest rate of recurrence concerns the missing of Denis-Brown device or early dismission of Denis-Brown as well. The adherence to the protocol is chiefly recommended by the authors when surgery is not performed and therefore the risk of recurrence is higher. The French method especially needs a skill panel of physical therapist that are in confidence with the bandage manoeuvres. Only medical operators in confidence with the methods are able to guarantee good results and a low rate of recurrence as well. For this reason the method recommended by Dr. Seringe is easy exported in geographic areas where health service and health support are well represented

INTRODUCTION. Limb salvage surgery is a common treatment for patients who suffer from bone tumors. In the case of pelvic tumors this creates a challenge for the surgeon and the treatment remains controversial because the oncologic complications like local recurrence, dissemination and orthopaedic ones, like infection, haemorrhage, and mechanical problems of reconstructions Tumors affecting the acetabulum are a challenge for the surgeon because of the impact in the function of the extremity. There are many reconstruction techniques described in the literature like prosthesis, allograft systems, arthrodesis, etc…, but still there is not a gold standard due to the poor functional results at long term follow up, and the associated complications of all techniques. In this study we show the experience in our center on pelvic reconstructions after tumors affecting the acetabulum area (zone II). MATERIAL AND METHODS. We surgically treated 81 pelvic tumors from 1997 to 2009 following the Enneking and Dunham calssification attending to the localization of the tumor: Zone I 38 (iliac bone)Zone II 25 (acetabulum)Zone III 18 (pelvic branches)In zone II tumors we performed pelvic reconstruction in eight cases, with different type of prosthesis. In 5 cases we performed saddle prosthesis (group A) and in 3 cases we performed Coned-Stanmore Implants type prosthesis with sacro-iliac anchorage. The mean follow up of the serie was 3,5 years (1–6 years). In group A the mean follow up was 5 years and in group A and in group B the mean follow up was 1 year due to the recent implantation in our center of Coned type prosthesis for pelvic reconstruction. We evaluated our results with these two types of prosthesis. RESULTS. Oncologic: group A we had a local recurrence of 25% and 25% of the patients died. group B we had no cases of local or systemic recurrence and we didn't registered any death. Functional: In group A the patients showed local pain and difficulty to walk probably due to the change of the center of rotation of the hip and instability of the saddle prosthesis. In group B all patient's followed physical therapy programs without problems and were able to walk with crutches ten months after surgery. Complications:group A we had a 25% of perioperative infection and a 25% of dislocation of the prosthesis. In group B we did not have any of these complications. CONCLUSIONS. Saddle prosthesis mantain the length of the extremity and allow weight bearing but they do not give a good stability. Even if we only have one year follow up with this Coned prosthesis with sacro iliac anchorage we achieved much better functional results and a lower rate of complications

Aims

Our objective was to conduct a systematic review and meta-analysis, to establish whether differences arise in clinical outcomes between autologous and synthetic bone grafts in the operative management of tibial plateau fractures.