Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA
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Knee Surg Sports Traumatol Arthrosc · Nov 2007
ReviewOutcomes of medial patellofemoral ligament reconstruction for patellar instability: a systematic review.
It has been suggested that in the majority of patellar dislocation cases the medial patellofemoral ligament (MPFL) is disrupted. Accordingly several authors over the past decade have recommended repair or reconstruction of the MPFL to reduce the high incidence of recurrent dislocation. The purpose of this review was to determine whether MPFL reconstruction is a suitable procedure with regards to clinical and radiological outcomes for patients with patellar instability. ⋯ When analysed, it would appear that MPFL reconstruction may provide favourable clinical and radiological outcomes for patellar instability patients. However, following a critical appraisal of these papers a number of methodological weaknesses were identified including recruiting small samples, not controlling for confounding variables, and providing limited statistical analysis of results. Future study is recommended to address these methodological flaws, in addition to beginning to assess the effectiveness of this procedure, in different patient groups.
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Knee Surg Sports Traumatol Arthrosc · Nov 2007
Flexion gap preparation opens the extension gap in posterior cruciate ligament-retaining TKA.
It has been reported that preparation of the flexion gap results in significant widening of the prepared extension gap in posterior stabilized (PS) total knee arthroplasty (TKA). To date, there is a paucity of data regarding cruciate ligament-retaining (CR) TKA. Changes in the extension gap caused by preparation of the flexion gap were measured in 42 varus osteoarthritic knees undergoing CR TKA. ⋯ The extension gap increased significantly on both the medial and lateral sides (18.8-20.0 and 21.7-22.7 mm, respectively) (P < 0.01). Preparation of the flexion gap also resulted in significant widening of the extension gap on CR TKA. However, amount of extension gap increase in CR TKA was smaller than previous reports on PS TKA.