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KMID : 1144520180300040293
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Knee Surgery & Related Research
2018 Volume.30 No. 4 p.293 ~ p.302
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Short-Term Results of Hybrid Closed-Wedge High Tibial Osteotomy: A Case Series with a Minimum 3-Year Follow-up
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Saito Hidetomo
Saito Kimio
Shimada Yoichi
Yamamura Toshiaki
Yamada Shin
Sato Takahiro
Nozaka Koji
Kijima Hiroaki
Miyakoshi Naohisa
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Abstract
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Purpose: High tibial valgus osteotomy (HTO) is a well-established surgical procedure for patients with medial compartment osteoarthritis (OA) of the knee. The hybrid closed-wedge HTO (CWHTO) procedure permits extensive correction in patients with severe deformities or patellofemoral joint OA. The aim of this study was to report the short-term results in a consecutive series of patients treated with hybrid CWHTO.
Materials and Methods: We retrospectively evaluated the clinical outcomes and radiographic parameters in 29 consecutive knees that underwent hybrid CWTHO to correct medial compartment OA at an average follow-up of 52.6 months. Clinical outcomes were assessed using the Lysholm score and knee scoring system of the Japanese Orthopedic Association (JOA). The Kellgren-Lawrence grading system and pre- and postoperative mechanical axis (MA), femorotibial angle (FTA), posterior tibial slope, and patella height were assessed.
Results: The FTA and MA significantly changed from 180.7° to 170.4° and from 22.0° to 60.2°, respectively. No significant differences were observed between the mean pre- and postoperative posterior tibial slope, Insall-Salvati ratio, or Caton-Deschamps index. The postoperative JOA and Lysholm scores significantly improved from 76.7 to 95.8 and from 58.8 to 90.2, respectively.
Conclusions: Satisfactory outcomes can be achieved with hybrid CWHTO in patients with medial OA.
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KEYWORD
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Knee, Osteoarthritis, Osteotomy, Closed-wedge, Hybrid
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