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International Orthopaedics

, Volume 43, Issue 6, pp 1379–1386 | Cite as

Medial open wedge vs. lateral closed wedge high tibial osteotomy - Indications based on the findings of patellar height, leg length, torsional correction and clinical outcome in one hundred cases

  • Felix FernerEmail author
  • Christoph Lutter
  • Joerg Dickschas
  • Wolf Strecker
Original Paper

Abstract

Introduction

Medial open wedge (MOW) and lateral closed wedge (LCW) osteotomies are established methods to treat medial gonarthritis. Advantages and differences in the outcome of the two techniques have been discussed controversially and there is still no precise recommendation for either technique. We now aimed to assess the effect of each technique on tibial slope (TS), patella height (PH) and leg length discrepancy.

Method

In a study of 50 consecutive cases of MOW and 50 of LCW osteotomies were registered. The decision for either technique was made pre-operatively according to an algorithm. Demographic data, operation procedures (time of operation, correction angle, torsional correction) and measurement of patellar height, tibial slope, leg length discrepancy, clinical outcome after one year and bone and wound healing were obtained. Pre- and post-operative values were compared between the two groups.

Results

In absence of randomization demographic data demonstrate comparability of the two groups. No difference in bone and wound healing, time of operation and clinical outcome was seen. In the MOW group PH decreased significantly, no relevant alteration of PH was detected in the LCW group. In the latter group a statistically significant decrease of TS compared to a slightly decrease in the MOW group was recorded post-operatively. A significant leg lengthening with the MOW and shortening of the leg with the LCW method can be achieved.

Discussion

With respect to similar results in operating procedures, bone and wound healing and clinical outcome decision making factors for either technique should be leg length discrepancy and torsional deformities. Changes of PH and TS have to be known and may influence the technique of osteotomy in cases of patella infera / alta or borderline PH.

Conclusion

An algorithm for valgus high tibial osteotomies based on TS, PH and leg length discrepancy may be proposed.

Keywords

Gonarthritis Osteotomy Varus deformity Surgical technique 

Notes

Compliance with ethical standards

Conflicts of interest

The authors declare that they have no conflict of interest.

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Copyright information

© SICOT aisbl 2018

Authors and Affiliations

  • Felix Ferner
    • 1
    Email author
  • Christoph Lutter
    • 1
  • Joerg Dickschas
    • 1
  • Wolf Strecker
    • 1
  1. 1.Klinik Orthopädie und Unfallchirurgie BambergBambergGermany

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