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Orthopaedic Proceedings
Vol. 104-B, Issue SUPP_5 | Pages 19 - 19
1 Apr 2022
Tsang SJ Stirling P Simpson H
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Introduction

Distal femoral and proximal tibial osteotomies are effective procedures to treat degenerative disease of the knee joint. Previously described techniques advocate the use of bone graft to promote healing at the osteotomy site. In this present study a novel technique which utilises the osteogenic potential of the cambial periosteal layer to promote healing “from the outside in” is described.

Materials and Methods

A retrospective analysis of a consecutive single-surgeon series of 23 open wedge osteotomies around the knee was performed. The median age of the patients was 37 years (range 17–51 years). The aetiology of the deformities included primary genu valgum (8/23), fracture malunion (4/23), multiple epiphyseal dysplasia (4/23), genu varum (2/23), hypophosphataemic rickets (1/23), primary osteoarthritis (1/23), inflammatory arthropathy (1/23), post-polio syndrome (1/23), and pseudoachondroplasia (1/23).


Orthopaedic Proceedings
Vol. 98-B, Issue SUPP_4 | Pages 28 - 28
1 Jan 2016
Stirling P Mannambeth RV Soler JA Batta V Malhotra RK Kalairajah Y
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Introduction

Increased accuracy of pre-operative imaging in patient-specific instrumentation (PSI) can result in longer-term savings, and reduced accumulated dose of radiation by eliminating the need for post-operative imaging or revision surgery. The benefits and drawbacks of CT vs MRI for use in PSI is a source of ongoing debate. This study reviews all currently available evidence regarding accuracy of CT vs MRI for pre-operative imaging in PSI.

Methods

The MEDLINE and EMBASE databases were searched between 1990 and 2013 to identify relevant studies. As most studies available focus on validation of a single technique rather than a direct comparison, the data from several clinical studies was assimilated to allow comparison of accuracy. Overall accuracy of each modality was calculated as proportion of outliers >3 % in the coronal plane.


Orthopaedic Proceedings
Vol. 98-B, Issue SUPP_4 | Pages 126 - 126
1 Jan 2016
Stirling P Faroug R Whittaker M Freemont T
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Objectives

The efficacy of Gram-stain microscopy for diagnosis of septic arthritis is fundamentally limited by an inherent false-negative rate of 25–50%. The aim of this study was to calculate the sensitivity of Gram-stain microscopy of synovial fluid collected in heparinised containers and to investigate if this collection method improves diagnostic value.

Methods

12-year retrospective study of patients undergoing synovial fluid analysis between 1998 and 2010. Gram-stain result was correlated with culture result and clinical diagnosis. The formula sensitivity = number of true positives/(number of true positives + number of false negatives) was used for analysis.