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Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XXXVII | Pages 441 - 441
1 Sep 2012
Alazzawi S Mayahi R Musonda P Parker M
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Objective

The aim of this study was to determine the correlation between body weight and fracture union for displaced intracapsular fracture neck of femur treated by closed reduction and internal fixation.

Patients and methods

A total of 197 patients with displaced intracapsular fracture of neck of femur, all of whom have been treated with closed reduction and internal fixation, were studied. The mean age was 71 years and 79% were female. Patients were followed up until fracture endpoint (union or non-union) with minimum follow up of 200 days.


Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XXXVII | Pages 442 - 442
1 Sep 2012
Field R Alazzawi S Field M Bardakos N Pinskerova V Freeman M
Full Access

Introduction

Femorotibial malalignment exceeding ±3° is a recognised contributor of early mechanical failure after total knee replacement (TKR). The angle between the mechanical and anatomical axes of the femur remains the best guide to restore alignment. We investigated where the femoral head lies relative to the pelvis and how its position varies with respect to recognised demographic and anatomic parameters. We have tested the hypothesis of the senior author that the position of the centre of the femoral head varies very little, and if its location can be identified, it could serve to outline the mechanical axis of the femur without the need for sophisticated imaging.

Patients & Methods

The anteroposterior standing, plain pelvic radiographs of 150 patients with unilateral total hip replacements were retrospectively reviewed. All patients had Tönnis grade 0 or 1 arthritis on the non-operated hip joint. All radiographs were obtained according to a standardised protocol. Using the known diameter of the prosthetic head for calibration, the perpendicular distance from the centre of the femoral head of the non-operated hip to the centre of pubic symphysis was measured with use of TraumaCad software. Anatomic parameters, including, but not limited to, the diameter of the intact femoral head, were also measured. Demographic data (gender, age, height, weight) were retrieved from our database.