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Orthopaedic Proceedings
Vol. 94-B, Issue SUPP_XXI | Pages 66 - 66
1 May 2012
A. H R. L A. P L. B K. T D. S H. K E. S M. M D. S M. M P. O P. B P. G H. B R. B P. D
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The distal femur fracture is a difficult injury that affects young men andelderly women. The tissue stripping that occurs with the traditional approach has been a factor in the development of complications like infection and nonunion. This study addresses the issue of minimally invasive approach. Does the LISS system really improve the results of such fracture?

Fifty-two patients were included in the trial from six academic trauma centres. Twenty-eight fractures had been randomised to be fixed with the LISS device, while twenty-four had the DCS implant. Type C3 fractures were excluded as they were not amenable for fixation with DCS system. All procedures were performed via minimally invasive technique. The LISS system had the targeter that helped with plate insertion and distal diaphyseal screws placement. Radiography was utilised in the case of the DCS distal screws insertion.

All fractures went onto union, except two participants in LISS group who had to be revised due to loss of reduction, in the early post-operative peroid. There were three nonunions in the same group. These required a re-operation. Further more, a LISS participant who had re-injured his distal femur (unrelated to LISS plate), was fixed with different implant. There was a single nonunion with the DCS group that needed revision surgery. There was one participant from each group who had drifted into varus. Neither required a re-operation. This translated into a 21% re-operation rate in the LISS system compared to 4% with the DCS device.

Our data supports the use of the DCS system in the fixation of distal femur fractures (except Type C3} via a minimally invasive approach. The LISS implant seems to be technique dependent. In our centre, the LISS plate had been discontinued in favour of the DCP and LCP systems.


Background

Autologous chondrocyte implantation (ACI) and mosaicplasty (MP) are two methods of repair of symptomatic articular cartilage defects in the adult knee. This study represents the only long-term comparative clinical trial of the two methods.

Methods

A prospective, randomised comparison of the two modalities involving 100 patients with symptomatic articular cartilage lesions was undertaken. Patients were followed for ten years. Pain and function were assessed using the modified Cincinnati score, Bentley Stanmore Functional rating system and visual analogue scores. ‘Failure’ was determined by pain, a poor outcome score and arthroscopic evidence of graft disintegration.