Aim of this study is to determine the difference between re-operation rates after conventional Methods of fixation of patella fractures using Metallic implants and novel technique of all suture fixation using Ethibond or fiber tape. This is a retrospective comparative analysis involving 62 patients who had a transverse patellar fracture and underwent surgery between January 2013 to December 2021. Selected patients were divided, based on different fixation methods used, into four groups - TBW group, CC screw group, Encirclage group and Suture Fixation Group. Patients were followed till bone union was evident on radiographs. Number of patients in Metallic implant group undergoing repeat operation were compared with the patients who underwent patella fracture fixation using all suture technique. Mean and standard deviation (SD) were calculated for all continuous variables. Mean of the two groups was compared using unpaired t-test.Abstract
Background
Methods
The burden of metastatic bone disease (MBD) in our Canadian cancer population continues to increase. MBD has a significant effect on patient morbidity, mortality, and health-related quality of life (HRQOL). There are various technical options used to surgically stabilize MBD lesions, surgical decision-making is variable and largely dependent on anatomic and surgeon-based factors. There is a paucity of research examining how surgical decision-making for MBD can be modified or individualized to improve quality of life (QOL) and functional outcomes, while more accurately aligning with patient-reported goals and expectations. The objective of this study was tosurvey MBD patients, support persons, physicians, and allied health care providers (HCP) with the goal of identifying 1) important contributors to HRQOL, 2) discordance in peri-operative expectations, and 3) perceived measures of success in the surgical management of MBD. This project is a longitudinal patient-engaged research initiative in MBD. A survey was developed based on HRQOL themes in the literature and based on feedback from our patient research partners. Participants were asked to identify 1) important contributors to HRQOL and 2) perceived measures of success relevant to the surgical management of MBD. Participants were asked to rank themes from ‘extremely important’ to ‘not important at all’. Using open-ended questions, participants were asked to identify areas of improvement. Responses from the open-ended questions were analyzed by an experienced qualitative researcher using conventional content analysis. Participant's demographics were calculated using descriptive statistics. Concordance or discordance of perceived measure of success was assessed via a Chi-Square test of independence. All statistical analyses were performed using IBM SPSS® software. Nine patients, seven support persons, 23 orthopaedic surgeons, 11 medical oncologists, 16 radiation oncologists, 16 nurses, and eight physiotherapists completed the survey. Regarding perceived measures of success, increased life expectancy (p Two main themes emerged around the timeliness of surgical care and the coordination of multidisciplinary care from patients and support persons. Patients and support persons expressed a sense of urgency in progressing to surgery/treatment, and frustration at perceived delays in treatment. Within coordination of care, patients and support persons would like clearer communication from the health care team. There is discordance between patient/support person goals compared to physicians/HCP goals in the surgical management of MBD. Surgical decision-making and operative techniques that minimize disease progression and improve survival are important to MBD patients. Timely access to surgery/surgical consultation and improved multidisciplinary communication is important to patients. This data suggests improved peri-operative communication and education is needed for MBD patients. Furthermore, future research evaluating how modern orthopaedic surgical techniques influence survival and disease progression in MBD is highly relevant and important to patients with MBD.
The performance of total hip replacement (THR) devices can be affected by the quality of the tissues surrounding the joint or the mismatch of the component centres during hip replacement surgery. Experimental studies have shown that these factors can cause the separation of the two components during walking cycle (dynamic separation) and the contact of the femoral head with the rim of the acetabular liner (edge loading), which can lead to increased wear and shortened implant lifespan1. There is a need for flexible pre-clinical testing tools which allow THR devices to be assessed under these adverse conditions. In this work, a novel dynamic finite element model was developed that is able to generate dynamic separation as it occurs during the gait cycle. In addition, the ability to interrogate contact mechanics and material strain under separation conditions provides a unique means of assessing the severity of edge loading. This study demonstrates these model capabilities for a range of simulated surgical translational mismatch values, for ceramic-on-polyethylene implants. The components of the THR were aligned and constrained as illustrated in Figure 1. CAD models of commercially available implant geometries were used (DePuy Synthes, Leeds, UK) modified for model simplicity by removing anti-rotation features. The polyethylene cup liner was given elastic-plastic behaviour. An axial load following the Paul cycle pattern (5 repetitive cycles) with maximum of 3KN and swing phase load of 0.3KN, was applied through the cup holder. The effect of translational mismatch was implemented by using a spring element connected to the cup unit on the lateral side. The spring was compressed by a fixed amount to replicate a degree of medial-lateral mismatch of the components. The instantaneous resultant force vector dictated the dynamic sliding behaviour of the cup against the head. In this study, translational medial-lateral mismatch values of 1, 2, 3 and 4mm were used and the medial-lateral dynamic separation, contact pressure maps and plastic strain were recorded.Introduction
Methodology
Enhanced Recovery Protocol (ERP) for elective total hip or total knee replacement has become the gold standard. The main principles are to reduce bleeding, both with a tranexamic acid infusion and local injection of adrenaline, and to reduce the risk of postoperative thrombo-embolic complications by early mobilisation, enabled by local anaesthetic infiltration at time of surgery. The aim of this study is to evaluate the impact of the ERP. A retrospective review was performed including all patients who underwent primary hip or knee arthroplasty surgery between January 2011 and December 2013. The ERP was implemented in our department in August 2012 thus creating two cohorts; the traditional postoperative group and those undergoing ERP. Outcome measurements of length of stay, postoperative transfusion, thrombo-embolic complications and number of re-admissions were assessed.Introduction
Methods
Segmental tibia fractures are high-energy injuries that are difficult to treat. We report on the use of the Ilizarov Method to treat 40 consecutive AO42C (35) and AO42B3 (5) fractures by a single surgeon. Fractures with bone loss requiring transport were excluded, as were fractures initially treated with nail or plate. 28 adult males, 12 adult females, average age 43. The most common mechanism of injury was RTA (50%). 12 (30%) had associated injuries. 19 (48%) fractures were open (6 3A, 13 3B) and 21 closed. 24 (60%) had temporary monolateral external fixation before definitive treatment. The mean time from injury to definitive Ilizarov frame was 8 days.Introduction
Patients
The relationship between hindfoot and forefoot kinematics is an important factor in the planning of ankle arthrodesis and ankle arthroplasty surgery. As more severe ankle deformities are corrected, improved techniques are required to assess and plan hindfoot to forefoot balancing. Gait analysis has previously been reported in patients with ankle arthritis without deformity. This group of patients have reduced intersegment motion in all measured angles. We have looked at a small group of patients with hindfoot deformity and ankle arthritis awaiting fusion or replacement. Using the Oxford Foot Model we have assessed lower limb kinematics with a focus on hindfoot to forefoot relationships. The results of our pilot study are in variance to previous studies in that we have shown that in the presence of hindfoot/ankle deformity, the forefoot range of motion increases. We feel that these data may impact on surgical planning.
Controversy exists whether to treat unstable pertrochanteric hip fractures with either intra-medullary or extra-medullary devices. A prospective randomised control trial was performed to compare the outcome of unstable pertrochanteric hip fractures stabilised with either a sliding hip screw or long Gamma Nail. The hypothesis was that there is no difference in outcome between the two modes of treatment. Over a four year period, 210 patients presenting with an unstable pertrochanteric hip fracture (AO/OTA 31 A2) were recruited into the study. Eligible patients were randomised on admission to either long Gamma Nail or sliding hip screw. Follow-up was arranged for three, six, and twelve months. Primary outcome measures were implant failure or ‘cut-out’. Secondary measures included mortality, length of hospital stay, transfusion rate, change in mobility and residence, and EuroQol outcome score. Five patients required revision surgery for implant cut-out (2.5%), of which three were long Gamma Nails and two were sliding hip screws (no significant difference). There were no incidences of implant failure or deep infection. Tip apex distance was found to correlate with implant cut-out. There was no statistically significant difference in either the EuroQol outcome scores or mortality rates between the two groups when corrected for mini mental score. There was no difference in transfusion rates, length of hospital stay, and change in mobility or residence. There was a clear cost difference between the implants. The sliding hip screw remains the gold standard in the treatment of unstable pertrochanteric fractures of the proximal femur.
Anterior cruciate ligament (ACL) rupture is a common sporting injury, often managed surgically with patella-tendon or hamstrings autograft. Surgeons are under increasing pressure for open transparent assessment of their performance. Scoring systems can be used to assess outcome. More than 50 different scoring systems have been identified to assess the ACL deficient knee. The survey is investigating the use of ACL scoring systems between knee surgeons in the United Kingdom as a method of assessing performance.Introduction
Aims
Traditional measurements of hindfoot alignment are based on the tibio-calcaneal angle and do not take the forefoot into account. We have developed an algorithm based on standard radiographs to calculate calcaneal offset using Ground Reaction Force (GRF). The GRF algorithm measures hindfoot alignment without using the tibial axisBackground
Hypothesis
Investigate the functional outcome of medial patellofemoral ligament (MPFL) surgery for patella instability. Compare functional outcome of direct MPFL repair and reconstruction using hamstring graft. All patients that underwent MPFL surgery for patella instability between 2007-2010 were retrospectively identified from operative records. Patients were divided based on whether they underwent direct repair of MPFL, or reconstruction using hamstring graft. The Kujala scoring questionnaire for patellofemoral disorders (max score 100) was used to assess their functional outcome following surgery.Purpose
Methods
The Plantaris Longus Tendon (PLT) may be implicated in Achilles (AT) tendinopathy. Different mechanical characteristics may be the cause. This study is designed to measure these. Six PLT and six AT were harvested from frozen cadavers (aged 65-88). Samples were stretched to failure using a Minimat 2000(tm) (Rheometric Scientific Inc.). Force and elongation were recorded. Calculated tangent stiffness, failure stress and strain were obtained. Averaged mechanical properties were compared using paired, one-tailed t-tests.Background
Methods
Trochanteric bursitis is described as pain over the lateral side of the hip and thigh. The usual treatment is rest, administration of NSAIDs and injection of local anaesthetic and corticosteroid. Occasionally it is resistant to these measures. Whilst performing an ablation of the trochanteric bursa we noticed that the fascia lata looked particularly tight. Therefore a z-plasty of the fascia lata was performed.Introduction
Background
Controversy exists whether to treat unstable pertrochanteric hip fractures with either intramedullary or extramedullary devices. A prospective randomised control trial was performed to compare the outcome of unstable pertrochanteric hip fractures stabilised with either a sliding hip screw (SHS) or Long Gamma Nail (LGN). The hypothesis was that there is no difference in outcome between the two modes of treatment. Over a four year period, 210 patients presenting with an unstable pertrochanteric hip fracture (AO/OTA 31 A2.1/A2.2/A2.3) were recruited into the study. Eligible patients were randomised on admission to either LGN or SHS. Follow-up was arranged for three, six, and twelve months. Primary outcome measures were implant failure and implant ‘cut-out’. Secondary measures included mortality, length of hospital stay, and EuroQol outcome score. Five patients required revision surgery for implant cutout, of which three were LGNs and two were SHSs (no significant difference). There was a significant correlation between tip apex distance and the need for revision surgery. There were no incidences of implant failure or deep infection. Mortality rates between the two groups were similar when corrected for mini mental score. There was no difference between the two groups with respect to tip apex distance, hospital length of stay, blood transfusion requirement, and EuroQol outcome score. The sliding hip screw remains the gold standard in the treatment of unstable pertrochanteric fractures of the proximal femur.
The main objective of our review was to access the inter-net websites providing information on non operative treatment of scoliosis and to assess the evidence for each treatment in the medical literature.
These treatments were then entered for search in Medline and Embase, only 45% (9/20) of these treatments were found to have been described in the medical literature.
Spinal lipomatosis is seldom reported in spinal literature and although the condition occurs commonly, we seldom recognise it in reviewing spinal MRI scans. We aim to highlight the condition and show MRI signs to allow easier recognition. We also introduce a new method of evaluation of the severity of the condition using T1 MRI axial views to evaluate the area of the spinal canal involved in the pathological process. We have evaluated 30 patients with a diagnosis of spinal lipomatosis made on sagittal MRI scanning of the spine. The T1 and T2 axial images have been evaluated using standard digital software which allows calculation of the surface area occupied by fat and allows representation of this as a ratio to total canal diameter. This has then been correlated to the traditional method of classifying lipomatosis on sagittal MRI sequences. We have found this method useful and believe it provides a more accurate representation of how fat in the canal may produce symptoms of nerve compression. This shows that the condition behaves more like our traditional understanding of spinal stenosis with symptoms more likely when the relationship of fat to canal reaches greater than 50%. This approach to spinal lipomatosis has not been described before but we feel produces a better understanding of the condition than we have had before by using a classification based on purely on sagittal MRI sequences.
Thirty five patients who underwent surgical correction of a degenerative scoliosis were identified. The pre-operative standing antero-posterior radiographs were compared with the coronal MRI images and Cobb angles measured. The mean patient age was 64 years old. The mean increase in Cobb angle in the degenerative curve on standing was ten degrees. This was not associated with age or magnitude of curve. A degenerative scoliosis is often considered inflexible. These results show that such curves do retain some flexibility and therefore patients may present with dynamic symptoms not represented on supine MRI images. Furthermore, pre-operative supine radiographs will identify the degree of flexibility that can be expected intra-operatively.
Theatre discipline remains a vital adjunct in the fight against infection in joint replacement surgery. The aim of this audit was to compare local theatre practise in two hospitals with that which is recommended in the literature. Factors assessed included the correct use of the ‘plenum’, the application of hats and masks, the opening of theatre doors intra-operatively, and the number of staff in the theatre. Results suggest that basic principles and practises of theatre antisepsis are not being adhered to during joint replacement surgery. Suggestions are made as to how theatre behaviour may be improved in order to optimise the operating environment.
