Acta Medica Okayama volume73 issue6
2019-12 発行

Time to Bone Union after Hybrid Closed-Wedge High Tibial Osteotomy

Takahara, Yasuhiro Department of Orthopedic Surgery, Nippon Kokan Fukuyama Hospital
Furumatsu, Takayuki Department of Orthopaedic Surgery, Okayama University Graduate School of Medicine, Dentistry and Pharmaceutical Sciences Kakenhi
Nakashima, Hirotaka Department of Orthopedic Surgery, Nippon Kokan Fukuyama Hospital
Itani, Satoru Department of Orthopedic Surgery, Nippon Kokan Fukuyama Hospital
Nakamura, Makoto Department of Orthopedic Surgery, Nippon Kokan Fukuyama Hospital
Uchida, Yoichiro Department of Orthopedic Surgery, Nippon Kokan Fukuyama Hospital
Kato, Hisayoshi Department of Orthopedic Surgery, Nippon Kokan Fukuyama Hospital
Tsujimura, Yoshitaka Department of Orthopedic Surgery, Nippon Kokan Fukuyama Hospital
Iwasaki, Yuichi Department of Orthopedic Surgery, Nippon Kokan Fukuyama Hospital
Ochi, Nobuaki Department of Orthopedic Surgery, Nippon Kokan Fukuyama Hospital
Publication Date
2019-12
Abstract
Medial open- and lateral closed-wedge high tibial osteotomy (hybrid CWHTO) can overcome the limitations of conventional CWHTO and open-wedge HTO (OWHTO) for medial compartmental osteoarthritis (OA) of the knee. Hybrid CWHTO increases stability by using a rigid locking plate and allows early full weight-bearing. However, the literature contains no information about time to bone union after this new procedure. The aim of this study is to evaluate the time to bone union after hybrid CWHTO. We reviewed 44 knees treated with hybrid CWHTO. Patients were able to stand on both legs on the day after surgery and walked with full weight-bearing within 4 weeks of the procedure. The time to achievement of bone union at the osteotomy site was defined as the number of months until bone union was confirmed on radiographic imaging. The mean time to radiographic confirmation of bone union was 4.5±1.5 months after surgery. Eleven knees (25.0%) required 6 months or more. Radiographic analysis and JOA score improved significantly between before and 1 year after surgery (p<0.01). Hybrid CWHTO is a very useful method for treating medial OA, but radiographic bone union requires 4.5 months on average. We must be aware of bone union after hybrid CWHTO.
Document Type
Original Article
Keywords
bone union
hybrid closed-wedge high tibial osteotomy
osteoarthritis
Comments
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Link to PubMed
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