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Manipulation of Tibial Component to Ensure Avoidance of Bearing Separation from the Vertical Wall of Tibial Component in Oxford Unicompartmental Arthroplasty

Clinics in Orthopedic Surgery 2021년 13권 1호 p.123 ~ 126
Hiranaka Takafumi, Tanaka Toshikazu, Okimura Kenjiro, Fujishiro Takaaki, Shigemoto Rika, Araki Shotaro, Okada Ryo, Nako Ryohei, Kamenaga Tomoyuki,
소속 상세정보
 ( Hiranaka Takafumi ) - Takatsuki General Hospital Department of Orthopedic Surgery
 ( Tanaka Toshikazu ) - Takatsuki General Hospital Department of Orthopedic Surgery
 ( Okimura Kenjiro ) - Takatsuki General Hospital Department of Orthopedic Surgery
 ( Fujishiro Takaaki ) - Takatsuki General Hospital Department of Orthopedic Surgery
 ( Shigemoto Rika ) - Takatsuki General Hospital Department of Orthopedic Surgery
 ( Araki Shotaro ) - Takatsuki General Hospital Department of Orthopedic Surgery
 ( Okada Ryo ) - Takatsuki General Hospital Department of Orthopedic Surgery
 ( Nako Ryohei ) - Takatsuki General Hospital Department of Orthopedic Surgery
 ( Kamenaga Tomoyuki ) - Takatsuki General Hospital Department of Orthopedic Surgery

Abstract


In Oxford unicompartmental knee arthroplasty, the relationship between the mobile bearing and the vertical wall of the tibial tray is important in preventing bearing dislocation. Separation of the bearing from the vertical wall can cause spinning of the bearing with an increased risk of subsequent dislocation. We report on intraoperative adjustment of the tibial tray performed to prevent the bearing from spinning. After tibial and femoral bone cutting and adjustment of the flexion and extension gap, the trial bearing is inserted and the bearing-vertical wall distance is evaluated before the preparation using the tibial template and bearing trial. In the case of separation, it can be resolved by medialization with or without rotational adjustment. The technique is useful and can be easily performed, it is therefore recommendable for all cases of Oxford mobile-bearing unicompartmental arthroplasty.

키워드

Arthroplasty; Replacement; Knee; Dislocation; Unicomparmental; Bearing

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