Changes in patellofemoral alignment do not cause clinical impact after open-wedge high tibial osteotomy
- Authors
- Lee, Yong Seuk; Lee, Sang Bok; Oh, Won Seok; Kwon, Yong Eok; Lee, Beom Koo
- Issue Date
- Jan-2016
- Publisher
- SPRINGER
- Keywords
- Knee; Osteoarthritis; Open-wedge high tibial osteotomy; Patellofemoral indices
- Citation
- KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY, v.24, no.1, pp.129 - 133
- Journal Title
- KNEE SURGERY SPORTS TRAUMATOLOGY ARTHROSCOPY
- Volume
- 24
- Number
- 1
- Start Page
- 129
- End Page
- 133
- URI
- https://scholarworks.bwise.kr/gachon/handle/2020.sw.gachon/8697
- DOI
- 10.1007/s00167-014-3349-y
- ISSN
- 0942-2056
- Abstract
- The objectives of this study were (1) to evaluate the clinical and radiologic outcomes of open-wedge high tibial osteotomy focusing on patellofemoral alignment and (2) to search for correlation between variables and patellofemoral malalignment. A total of 46 knees (46 patients) from 32 females and 14 males who underwent open-wedge high tibial osteotomy were included in this retrospective case series. Outcomes were evaluated using clinical scales and radiologic parameters at the last follow-up. Pre-operative and final follow-up values were compared for the outcome analysis. For the focused analysis of the patellofemoral joint, correlation analyses between patellofemoral variables and pre- and post-operative weight-bearing line (WBL), clinical score, posterior slope, Blackburn Peel ratio, lateral patellar tilt, lateral patellar shift, and congruence angle were performed. The minimum follow-up period was 2 years and median follow-up period was 44 months (range 24-88 months). The percentage of weight-bearing line was shifted from 17.2 +/- A 11.1 to 56.7 +/- A 12.7 %, and it was statistically significant (p < 0.01). Regarding the clinical results, statistical significance was observed using all scores (p < 0.01). In the radiologic evaluation, patellar descent was observed with statistical significance (p < 0.01). Last follow-up lateral patellar tilt was decreased with statistical significance (p < 0.01). In correlation analysis between variables of patellofemoral malalignment, the pre-operative weight-bearing line showed an association with the change in lateral patellar tilt and lateral patellar shift (correlation coefficient: 0.3). After open-wedge high tibial osteotomy, clinical results showed improvement, compared to pre-operative values. The patellar tilt and lateral patellar shift were not changed; however, descent of the patella was observed. Therefore, mild patellofemoral problems should not be a contraindication of the open-wedge high tibial osteotomy. Case series, Level IV.
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