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Is overcorrection preferable for repair of degenerated articular cartilage after open-wedge high tibial osteotomy?

Knee

Abstract

Purpose

This study was performed to determine whether the overcorrected knee could obtain a higher ratio of articular cartilage repair in the medial compartment of the femorotibial joint after open-wedge high tibial osteotomy (HTO). The hypothesis of the study was that overcorrected knees had a higher ratio of articular cartilage repair than moderately corrected knees.

Methods

A total of 71 knees that underwent arthroscopy to evaluate the articular cartilage during open-wedge HTO and second-look arthroscopy were reviewed. The articular cartilage was classified as no repair or repair according to Koshino et al. Overcorrection was defined as knees with femorotibial angle ≤166°.

Results

Second-look arthroscopy was performed 410 ± 64 days after HTO. Based on arthroscopic observations, 45 knees (63.4 %) showed no repair and 26 knees (36.6 %) showed repair. In terms of the ratio of cartilage repair, there was no difference between overcorrected knees with mean femorotibial angle of 165° ± 1° and moderately corrected knees with mean femorotibial angle of 170° ± 2° (n.s.).

Conclusions

No significant differences were found in the ratio of cartilage repair between overcorrected and moderately corrected knees.

Level of evidence

Retrospective comparative study, Level III.

Keywords

Knee Cartilage Osteotomy Osteoarthritis Navigation 

Notes

Acknowledgments

We thank Dr. Tomoyuki Mochizuki and Dr. Masayuki Shimaya for their support in drafting of the revised version of the manuscript.

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Copyright information

© European Society of Sports Traumatology, Knee Surgery, Arthroscopy (ESSKA) 2015

Authors and Affiliations

  1. 1.Department of Orthopaedic SurgeryNekoyama Miyao HospitalNiigataJapan

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