通过计算机断层扫描测量，胫骨结节扭转与髌骨高度有关

IF 2 Q2 ORTHOPEDICS

Journal of Experimental Orthopaedics Pub Date : 2025-05-06 DOI:10.1002/jeo2.70258

Joseph D. Giusto, Janina Kaarre, Yongji Kim, Jae-Sung An, Sally LiArno, Faizan Ahmad, Matthieu Ollivier

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引用次数: 0

摘要

目的通过计算机断层扫描（CT）建立髌股不稳定患者的平均胫骨结节（TT）扭转角，并探讨TT扭转角是否会因人口统计学、胫骨结节-滑车沟（TT- tg）距离和髌骨高度而不同。方法查询Stryker骨科建模与分析（SOMA）数据库中患者的CT扫描和现有的髌骨和TT位置相关测量。比较TT- tg距离（≥20 vs. < 20mm）和髌骨高度（install - salvati [IS]指数≥1.3 vs. <1.3）增加和正常的患者TT扭转角的平均值。测量沟角、髌骨倾斜角、一致性角、滑车沟深度和长肢轴对中。结果纳入了SOMA数据库499例患者的886个膝关节，平均年龄59.4±16.5岁，女性238例（48%）。所有患者的平均TT扭转角度为24.7±5.2°。与男性相比，女性的平均IS指数（1.24比1.18）、TT- tg距离（13.8 mm比11.8 mm）和TT扭转角（25.5°比24.0°）显著高于男性。两组TT- tg距离≥20mm和<； 20mm患者TT扭转角平均值为24.7°（p = n.s）。IS指数≥1.3（26.6°）的患者TT扭转角度明显大于IS指数≥1.3（24.0°）的患者（p < 0.001）。TT扭转角与IS指数呈弱正相关（r = 0.242, p < 0.001），但与其他测量值无关。结论髌股不稳患者的平均扭转角为24.7°，扭转角的增加与髌骨高度的增加有关。没有发现TT扭转与TT- tg之间的关联。本研究的发现描述了用CT对髌股关节进行形态学评估之间的关系。证据水平IV级，队列研究。

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Tibial tubercle torsion is associated with patellar height when measured by computed tomography

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Tibial tubercle torsion is associated with patellar height when measured by computed tomography

Purpose

To establish an average tibial tubercle (TT) torsion angle from computed tomography (CT) scans of patients without known patellofemoral instability and investigate whether TT torsion angles would differ based on demographics, tibial tubercle-trochlear groove (TT-TG) distance and patellar height.

Methods

The Stryker Orthopaedics Modeling and Analytics (SOMA) database was queried for patients with CT scans and available measures related to patella and TT position. The mean TT torsion angle was compared in patients with an increased and normal TT-TG distance (≥20 vs. <20 mm) and patellar height (Insall–Salvati [IS] index ≥1.3 vs. <1.3). Measurements of sulcus angle, patellar inclination angle, congruence angle, trochlear groove depth and long limb axis alignment were assessed.

Results

A total of 886 knees from 499 patients within the SOMA database were included, with a mean age of 59.4 ± 16.5 years and 238 (48%) females. The mean TT torsion angle for all patients was 24.7 ± 5.2°. Females had a significantly higher mean IS index (1.24 vs. 1.18), TT-TG distance (13.8 mm vs. 11.8 mm) and TT torsion angle (25.5° vs. 24.0°) compared to males. The mean TT torsion angle for patients with a TT-TG distance ≥20 mm and <20 mm was 24.7° in both groups (p = n.s.). There was a significantly greater TT torsion angle in patients with an IS index ≥1.3 (26.6°) compared to those with an IS index <1.3 (24.0°) (p < 0.001). A weak and positive correlation was found between TT torsion angle and IS index (r = 0.242, p < 0.001), but not with other measurements.

Conclusion

The mean TT torsion angle for patients without known patellofemoral instability was 24.7° and increased TT torsion angles were associated with increased patellar height. An association between TT torsion and TT-TG was not found. Findings of the current study describe the relationship between morphologic assessments of the patellofemoral joint using CT.