Knee surgery, sports traumatology, arthroscopy : official journal of the ESSKA
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Knee Surg Sports Traumatol Arthrosc · Dec 2014
Extension gap needs more than 1-mm laxity after implantation to avoid post-operative flexion contracture in total knee arthroplasty.
In total knee arthroplasty (TKA), a high soft-tissue tension in extension at the time of operation would cause a post-operative flexion contracture. However, how tight the extension gap should be during surgery to avoid a post-operative flexion contracture remains unclear. The hypothesis is that some laxity in the intraoperative extension gap is necessary to avoid the post-operative flexion contracture. ⋯ Prospective comparative study, Level II.
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Knee Surg Sports Traumatol Arthrosc · Nov 2014
Randomized Controlled Trial Comparative StudyPost-operative blood loss in total knee arthroplasty: knee flexion versus pharmacological techniques.
To compare the blood loss and the blood transfusion between a control group and a group of patients following either a local administration of tranexamic acid or a mechanical post-operative knee flexion, a controlled randomized study was performed. ⋯ Prospective therapeutic study, Level I.
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Knee Surg Sports Traumatol Arthrosc · Nov 2014
Combined trochleoplasty and MPFL reconstruction for treatment of chronic patellofemoral instability: a prospective minimum 2-year follow-up study.
Excessive trochlear dysplasia may be responsible for recurrent patellofemoral instability (PFI) due to a missing bony guidance for the patella in early flexion. Thus, an isolated medial patellofemoral ligament reconstruction (MPFLR) can be insufficient, since it mainly addresses instability close to extension and additionally can increase patellofemoral pressure leading to pain in flat or convex trochlear dysplasia. Therefore, in combination with a trochleoplasty, an anatomical trochlear groove is created, resulting in patellofemoral stability also in flexion, while patellofemoral pressure is normalized. In this prospective study, we evaluated the outcome of open trochleoplasty in combination with MPFLR with a minimum follow-up of 2 years for treatment of excessive PFI. ⋯ Prospective case series, Level IV.
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Knee Surg Sports Traumatol Arthrosc · Nov 2014
Patellofemoral osteoarthritis after Insall's proximal realignment for recurrent patellar dislocation.
The aim of the present study was to retrospectively investigate the development of patellofemoral osteoarthritis after the historical Insall's proximal realignment for patellar stabilisation in patients with recurrent patellar dislocation. Furthermore, risk factors for recurrent patellar dislocation and for patellofemoral osteoarthritis development were evaluated. ⋯ IV.
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Knee Surg Sports Traumatol Arthrosc · Nov 2014
Tibial rotational osteotomy and distal tuberosity transfer for patella subluxation secondary to excessive external tibial torsion: surgical technique and clinical outcome.
Recurrent patella subluxation may be secondary to excessive external tibial torsion. The purpose of this study is to evaluate the clinical and radiographic outcome of patients undergoing tibial derotation osteotomy and tibial tuberosity transfer for recurrent patella subluxation in association with excessive external tibial torsion. ⋯ Case series, Level IV.