Document Detail

The effect of biplane medial opening wedge high tibial osteotomy on patellofemoral joint indices.
MedLine Citation:
PMID:  23127422     Owner:  NLM     Status:  Publisher    
PURPOSE: This study was designed to examine the effect of biplane medial opening wedge high tibial osteotomy (MOWHTO) on patellofemoral indices and posterior tibial slope. MATERIALS AND METHODS: Sixty-two knees (61 patients) underwent biplane MOWHTO for unicompartmental osteoarthritis of the knee. Patellar indices were measured by radiographic assessment postoperatively. The Merchant's views were used for patellar tilt and shift while standing lateral view radiographs were used for the patellar height analysis using the modified Blackburne-peel ratio (mBP). The patients were divided into two groups according to the change between the pre- and postoperative mechanical axis. Group A constituted the correction angle of equal more than 10°, and group B of less than 10°. RESULTS: Group A demonstrated a significant change of mechanical axis and the tibial slope. Patellar indices including the patellar tilt, shift, and mBP did not show significant difference. Group B demonstrated the statistical significant difference in only the mechanical axis deviation. Patellar indices including the patellar tilt, shift, and mBP as well as the tibia slope did not show significant difference. When evaluated as a whole group, the mean shift in weight bearing line, patellar height (mBP), and tibial slope from preoperative to postoperative value was statistically significant. However, the patellar tilt and shift were not changed significantly. CONCLUSIONS: After biplane MOWHTO, patellar tilt and shift do not significantly change when measured on static mode supine X-ray. However, patella was lowered and tibia slope increased after MOWHTO. LEVEL OF EVIDENCE: II.
Jae-Hyuk Yang; Suk-Ha Lee; Kuldeep Singh Nathawat; Seung-Hyub Jeon; Kwang-Jun Oh
Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2012-11-2
Journal Detail:
Title:  The Knee     Volume:  -     ISSN:  1873-5800     ISO Abbreviation:  Knee     Publication Date:  2012 Nov 
Date Detail:
Created Date:  2012-11-6     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9430798     Medline TA:  Knee     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2012 Elsevier B.V. All rights reserved.
Department of Orthopedic Surgery, Veterans Health Service Medical Center, Seoul, Republic of Korea.
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