Acta Medica Okayama volume73 issue6
2019-12 発行
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
Kaken ID
publons
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
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.
bone union
hybrid closed-wedge high tibial osteotomy
osteoarthritis