Total knee arthroplasty conversion after open-wedge high tibial osteotomy: A report of three cases

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• 作者：Hee-June Kim ; Young-Gun Kim ; Seung-Gi Min ; Hee-Soo Kyung ; ^{hskyung@knu.ac.kr}
• 关键词：TKA conversion ; Open-wedge high tibial osteotomy ; Medial instability
• 刊名：The Knee
• 出版年：2016
• 出版时间：December 2016
• 年：2016
• 卷：23
• 期：6
• 页码：1164-1167
• 全文大小：776 K
• 卷排序：23

文摘

The changes in the anatomy that occur due to a high tibial osteotomy (HTO), including the ligament release, can affect the clinical results after a subsequent total knee arthroplasty (TKA). We present three cases in which patients underwent conversion to a TKA after an open-wedge HTO. Of particular interest is the medial instability that was noted during the TKA procedures.MethodsThree patients underwent conversion to a TKA after an open-wedge HTO.ResultsOne case was converted to a TKA using a conventional posterior-stabilized type implant, and the other case was converted to a TKA using varus–valgus constraint-type implants due to the medial instability. The final case was converted to TKA using a conventional posterior-stabilized type implant, but a revision TKA using constrained-type implant was performed due to neglected medial instability.ConclusionConversion to a TKA after open-wedge HTO requires careful preparation and a constrained-type implant should be prepared to address the medial structure release. Furthermore, medial structures should be repaired during open-wedge HTO, in case the patient requires a future TKA conversion.