Carver College of Medicine, University of Iowa, Iowa City, IA, USA.
Department of Orthopedics and Rehabilitation, University of Iowa Hospitals & Clinics, Iowa City, IA, USA.
Iowa Orthop J. 2021 Dec;41(2):77-81.
The purpose of the present study is to determine the association between femoral version and traditional pathologic bony factors commonly used to measure and define patellofemoral alignment.
We performed a retrospective review of patients treated for patellofemoral instability (PFI) at a single institution. Patients included underwent magnetic resonance imaging (MRI) of the lower extremity using a rotational protocol prior to medial patellofemoral ligament reconstruction with or without tibial tubercle osteotomy. Those with a history of ipsilateral lower extremity surgery were excluded. Two independent reviewers measured femoral version, tibial tubercle-trochlear groove (TT-TG) distance, tibial tubercle-posterior cruciate ligament (TT-PCL) distance, and tibial torsion (TT). Pearson correlation coefficients were used to describe the relationships between all radiographic measures.
A total of 51 knees (43 patients) were included. The average age and body mass index were 23.7 9.33 years and 29.23 8.04 kg/ m2, respectively. The mean femoral version was 15.61 11.57°. The degree of femoral version did not significantly correlate with TT-TG (r=0.103, p=0.474), TT-PCL (-0.086, p=0.550), or TT (r=0.111, p=0.438). Increased TT-TG distance was strongly associated with increased TT-PCL (r=0.470, p=0.001). In females, increased femoral version significantly correlated with increased TT (r=0.381, p=0.029).
Neither increased nor decreased amounts of femoral anteversion significantly correlated with TT-TG, TT-PCL, or TT. Therefore, assessment of femoral version should be measured independently of conventional measures when considering osteotomies to correct PFI. IV.
本研究旨在确定股骨前倾角与常用于测量和定义髌股对线的传统病理性骨性因素之间的关系。
我们对一家机构治疗髌股不稳定（PFI）的患者进行了回顾性研究。患者在接受内侧髌股韧带重建术（伴或不伴胫骨结节截骨术）前，通过旋转方案接受了下肢磁共振成像（MRI）检查。排除同侧下肢手术史患者。两名独立的审查员测量了股骨前倾角、胫骨结节滑车沟（TT-TG）距离、胫骨结节-后十字韧带（TT-PCL）距离和胫骨扭转（TT）。Pearson 相关系数用于描述所有影像学测量之间的关系。
共纳入 51 膝（43 例）。平均年龄和体重指数分别为 23.7 9.33 岁和 29.23 8.04 kg/m2。平均股骨前倾角为 15.61 11.57°。股骨前倾角的程度与 TT-TG（r=0.103，p=0.474）、TT-PCL（-0.086，p=0.550）或 TT（r=0.111，p=0.438）均无显著相关性。TT-TG 距离增加与 TT-PCL 增加呈强相关（r=0.470，p=0.001）。在女性中，股骨前倾角增加与 TT 增加显著相关（r=0.381，p=0.029）。
股骨前倾角的增加或减少与 TT-TG、TT-PCL 或 TT 均无显著相关性。因此，在考虑行截骨术矫正 PFI 时，应独立于常规测量来评估股骨前倾角。IV。
