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Orthopaedic Proceedings
Vol. 104-B, Issue SUPP_7 | Pages 24 - 24
1 Jul 2022
Spolton-Dean C Burden E East J Toms A Bhamber N Waterson B
Full Access

Abstract

Introduction

OtisMed Shape Match ® patient specific implant cutting jigs were designed to place TKA in kinematic alignment (KA) rather than traditional mechanical alignment (MA). This product was withdrawn from the market in 2013.

It has been hypothesised that KA might lead to early implant failure. Initial evidence has not supported this.

We present 10 year outcome data for the largest single centre cohort to date.

Methodology

Between 2010 and 2013, 127 Shape Match® TKAs were implanted in 119 individuals.

Retrospective review of long leg post-operative radiographs assessed femoral mechanical anatomical angle (FMA), tibial mechanical angle (TMA), hip-knee-ankle angle (HKA), posterior tibial slope (PTS) and femoral component flexion.

Oxford Knee Scores (OKS), revision and further surgery rates were reviewed.


Orthopaedic Proceedings
Vol. 104-B, Issue SUPP_7 | Pages 26 - 26
1 Jul 2022
Michael C Salar O Bayley M Waterson B Toms A Phillips J
Full Access

Abstract

Background

Prosthetic joint infection (PJI) is a significant cause of morbidity and mortality following knee replacement surgery. Identifying the causative agent(s) and their antibiotic sensitivities is critical in determining the choice of treatment methods used and the likelihood of successful eradication. This study aimed to investigate:

Whether biopsy alone was superior to aspiration alone in specificity and sensitivity for diagnosing PJI following knee replacement

Whether biopsy identifies the same microbiological flora as aspiration

Methods

We identified consecutive patients passing through our knee infection Multi-Disciplinary Team meeting between December 2014 and March 2020. Data was collated data retrospectively using electronic records. Statistical analysis was performed using Stata (Timberlake, February 2020)


Orthopaedic Proceedings
Vol. 103-B, Issue SUPP_2 | Pages 82 - 82
1 Mar 2021
Walker R Stroud R Waterson B Phillips J Mandalia V Eyres K Toms A
Full Access

Abstract

Background

Whilst the literature abounds with patient reported outcomes following total knee replacement (TKR) there is a paucity of literature covering objective functional outcomes. Awareness of objective functional outcomes following TKR is key to the consent process and relating it to pre-operative function enables a tailored approach to consent.

Objectives

Identify trends in a range of functional outcomes prior to and following TKR up to one year post-operatively.


Orthopaedic Proceedings
Vol. 103-B, Issue SUPP_2 | Pages 57 - 57
1 Mar 2021
Walker R Rye D Yoong A Waterson B Phillips J Toms A
Full Access

Abstract

Background

Lower limb mechanical axis has long been seen as a key to successful in lower limb surgery, including knee arthroplasty. Traditionally, coronal alignment has been assessed with weight-bearing lower limb radiographs (LLR) allowing assessment of hip-knee-ankle alignment. More recently CT scanograms (CTS) have been advocated as a possible alternative, having the potential benefits of being quicker, cheaper, requiring less specialist equipment and being non-weightbearing.

Objectives

To evaluate the accuracy and comparability of lower limb alignment values derived from LLR versus CTS.