Preoperative varus laxity correlates with overcorrection in medial opening wedge high tibial osteotomy
| Autor: | Hiroyasu Ogawa, Kentaro Takeuchi, Takahiro Ogawa, Kazu Matsumoto, Haruhiko Akiyama |
|---|---|
| Rok vydání: | 2016 |
| Předmět: |
Joint Instability
Male musculoskeletal diseases medicine.medical_specialty Knee Joint Radiography Surgical planning Joint laxity 03 medical and health sciences 0302 clinical medicine High tibial osteotomy medicine Humans Orthopedics and Sports Medicine Tibia Aged Retrospective Studies Orthodontics 030222 orthopedics biology business.industry Soft tissue Bone Malalignment 030229 sport sciences General Medicine Anatomy Middle Aged Osteoarthritis Knee musculoskeletal system biology.organism_classification Osteotomy body regions Valgus Treatment Outcome Preoperative Period Orthopedic surgery Female Surgery business |
| Zdroj: | Archives of Orthopaedic and Trauma Surgery. 136:1337-1342 |
| ISSN: | 1434-3916 0936-8051 |
| DOI: | 10.1007/s00402-016-2521-x |
| Popis: | Medial opening wedge high tibial osteotomy (HTO) is a realignment of the lower limb. Despite accurate preoperative planning and careful surgical techniques, many HTOs result in alignment correction errors. These alignment correction errors may be due to soft tissue laxity around the knee such as varus or valgus laxity. The purpose of this study was to examine the relationship of varus and valgus laxity of the knee and alignment correction errors, and to have a formula to predict the subsequent degree of these correction errors. Fifty knees from 41 patients undergoing opening wedge HTO for knee osteoarthritis were involved. Standing full-length anteroposterior radiographs of the lower limb and the tibia, and varus and valgus stress radiographs of the knee were used to evaluate alignment and joint laxity. Parameters were global correction (the change in the hip–knee–ankle angle), bony correction (the change in the medial proximal tibial angle), and soft tissue correction (global correction − bony correction). The average of global correction, bony correction, and soft tissue correction were 12.8° ± 4.3°, 9.4° ± 3.2°, and 3.4° ± 2.5°, respectively. Preoperative varus laxity was moderately correlated with soft tissue correction (R = 0.58), and in which the slope of the line in the scatter plot represented 0.59, implying that soft tissue correction increases by 0.59° for every 1° of preoperative varus laxity. Preoperative varus laxity is correlated with soft tissue correction, suggesting that more accurate alignment correction could be achieved by surgical planning taking into account preoperative varus laxity as a factor of soft tissue correction. |
| Databáze: | OpenAIRE |
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