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KMID : 1144520200320010055
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Knee Surgery & Related Research
2020 Volume.32 No. 1 p.55 ~ p.55
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Preoperative flexion contracture is a predisposing factor for cartilage degeneration at the patellofemoral joint after open wedge high tibial osteotomy
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Otsuki Shuhei
Ikeda Kuniaki
Wakama Hitoshi
Okuno Nobuhiro
Okamoto Yoshinori
Okayoshi Tomohiro
Miyamoto Yuki
Neo Masashi
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Abstract
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Purpose: The purpose of the study was to determine the effect of cartilage degeneration at the patellofemoral joint on clinical outcomes after open wedge high tibial osteotomy and to investigate the predisposing factors for progressive patellofemoral cartilage degeneration.
Methods: Seventy-two knees were evaluated on second-look arthroscopy in patients who opted for plate and screw removal at an average of 20.1?months after osteotomy. Cartilage degeneration at the patellofemoral joint was evaluated using the International Cartilage Repair Society grading system, with cases divided into progression and nonprogression groups. Radiographic parameters of the patellofemoral anatomy, knee range of motion, and clinical outcomes were evaluated from the preoperative baseline to the final follow up, on average 50?months after osteotomy. A contracture >?5° was considered a flexion contracture.
Results: Cartilage degeneration progressed in 31 knees, and preoperative knee flexion contracture was significantly associated with progressive degeneration (P?
Conclusions: Flexion contracture may be associated with progression of cartilage degeneration at the patellofemoral joint and may negatively affect the clinical outcomes after open wedge, high tibial osteotomy.
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KEYWORD
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Knee, Open wedge high tibial osteotomy, Range of motion, Cartilage degeneration, Patellofemoral joint, Clinical outcome
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