A Retrospective Comparison of Union Rates After Open Wedge High Tibial Osteotomies With and Without Synthetic Bone Grafts (Hydroxyapatite and beta-tricalciumphosphate) at 2 Years
- Authors
- Nha, Kyung Wook; Oh, Seung Min; Ha, Yoon Won; Nikumbha, Vivek P.; Seo, Jung Hwan; Oh, Myung Jae; Lim, Chae Ouk; Kim, Jae Gyoon
- Issue Date
- 9월-2018
- Publisher
- W B SAUNDERS CO-ELSEVIER INC
- Citation
- ARTHROSCOPY-THE JOURNAL OF ARTHROSCOPIC AND RELATED SURGERY, v.34, no.9, pp.2621 - 2630
- Indexed
- SCIE
SCOPUS
- Journal Title
- ARTHROSCOPY-THE JOURNAL OF ARTHROSCOPIC AND RELATED SURGERY
- Volume
- 34
- Number
- 9
- Start Page
- 2621
- End Page
- 2630
- URI
- https://scholar.korea.ac.kr/handle/2021.sw.korea/73268
- DOI
- 10.1016/j.arthro.2018.03.008
- ISSN
- 0749-8063
- Abstract
- Purpose: To evaluate the clinical and radiological results of no bone graft (NBG) after opening wedge high tibial osteotomy (OWHTO) with a locking plate and to compare the bone union rate between the synthetic bone graft (SBG) group and the NBG group after OWHTO using serial radiographs. Methods: From 2012 to 2015, OWHTOs were performed with SBG or without bone graft using long locking plates. Inclusion criteria were: (1) OWHTO for disease of the medial compartment with varus deformity, and (2) minimum 2-year follow-up and radiographs taken serially to 2 years. Exclusion criteria were: (1) follow-up period < 2 years (n = 8) or (2) absence of at least 1 radiograph taken at each follow-up point (n = 14). We retrospectively reviewed radiographs taken preoperatively and at 6 weeks, 3 months, 6 months, 1 year, and 2 years postoperatively. Groups comprised those filled with a synthetic bone [hydroxyapatite (HA) and beta-tricalciumphosphate (TCP), n = 33, SBG group] or without a bone graft (n = 38, NBG group). We compared bone union rate between the 2 groups by measuring the union zone from zone 1 to zone 5 in serial radiographs using Fisher's exact test. Results: OWHTO was performed in a total of 93 knees and 71 knees were included in this study. Both groups showed good clinical and radiological results without correction loss at 2 years. The entire NBG group and 93.9% of the SBG group showed union over zone 3 at 2 years. However, the NBG group showed significantly more incorporation than the SBG group at 6 months (P = .006), 1 year (P = .0003), and 2 years (P = .0003). Conclusions: Union without correction loss was obtained after OWHTO without bone graft. The NBG group showed significantly more incorporation than the SBG group (HA and beta-TCP) within 2 years.
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