Pamuk Çağdaş, Moralar Ülker, Gök Ümit
Orthopaedics and Traumatology, Silivri Anadolu Special Hospital, Istanbul, TUR.
Orthopaedics and Traumatology, Kocaeli State Hospital, Kocaeli, TUR.
Cureus. 2024 Dec 10;16(12):e75488. doi: 10.7759/cureus.75488. eCollection 2024 Dec.
Background This study hypothesizes that patients with femoral condylar hypoplasia who undergo total knee arthroplasty (TKA) may experience femoral component malrotation and that the surgeon performing the operation may not notice it. The aim is to measure the rotational alignment of the femoral components and assess the functional outcomes in these patients. Materials and methods Between December 2018 and December 2022, a total of 96 knees from 80 patients were evaluated. The patients were divided into two groups: one with femoral condylar hypoplasia and one without. Rotational changes and functional outcomes were assessed and compared. Results The study included 24 patients, 12 in Group 1 and 12 in Group 2. The demographic characteristics of the patients were homogeneous. The duration of knee prostheses ranged from two to four years. Femoral condylar hypoplasia was detected in 15% of all patients. All patients with hypoplasia had femoral components in varying degrees of internal rotation. There was no significant difference in functional scores between the two groups. Conclusions The rotation of the femoral component in TKA using the posterior condylar axis is affected by deformities in the condyles. In patients with lateral condylar hypoplasia, using the standard method inevitably results in internal rotation of the femoral component.
背景 本研究假设，接受全膝关节置换术（TKA）的股骨髁发育不全患者可能会出现股骨假体旋转不良，而实施手术的外科医生可能并未注意到这一点。目的是测量股骨假体的旋转对线情况，并评估这些患者的功能结局。材料与方法 2018年12月至2022年12月期间，共评估了来自80例患者的96个膝关节。患者被分为两组：一组为股骨髁发育不全患者，另一组为无股骨髁发育不全患者。评估并比较了旋转变化和功能结局。结果 该研究纳入了24例患者，第1组12例，第2组12例。患者的人口统计学特征相似。膝关节假体使用时间为2至4年。所有患者中15%检测到股骨髁发育不全。所有发育不全患者的股骨假体均有不同程度的内旋。两组患者的功能评分无显著差异。结论 使用后髁轴进行全膝关节置换术时，股骨假体的旋转受髁部畸形影响。在外侧髁发育不全的患者中，采用标准方法不可避免地会导致股骨假体的内旋。
