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The Sagittal Tibial Tubercle-Trochlear Groove Distance as a Measurement of Sagittal Imbalance in Patients with Symptomatic Patellofemoral Chondral Lesions.
CARTILAGE ( IF 2.7 ) Pub Date : 2020-01-22 , DOI: 10.1177/1947603519900802
Drew A Lansdown 1 , David Christian 2 , Brett Madden 2 , Michael Redondo 2 , Jack Farr 3 , Brian J Cole 2 , Adam B Yanke 2
Affiliation  

Objective. To measure the sagittal alignment of the tibial tubercle through the sagittal tibial tubercle-trochlear groove (sTTTG) distance in patients with and without patellar chondral lesions. Design. Patients treated with patellofemoral cartilage restoration or repair procedures were retrospectively reviewed (group 1; N = 17). A control group of patients (group 2; N = 20) undergoing partial meniscectomy with normal patellar cartilage was included. An asymptomatic patellar chondrosis group (group 3; N = 15) was identified as patients undergoing partial meniscectomy with patellar cartilage wear. The sTTTG was measured on the preoperative axial T2 magnetic resonance imaging (MRI) sequence. The first point was the nadir of the anterior trochlear cartilage, and the second point was the anterior tibial tubercle. A line was drawn between these points, perpendicular to the posterior condylar axis. Comparisons were made between the 3 groups using analysis of variance testing with Bonferroni corrections. Significance was defined as P < 0.05. Results. The mean sTTTG was significantly more posterior in group 1 (5.9 ± 5.5 mm posterior to the trochlear groove) relative to group 2 (0.8 ± 5.3 mm posterior; P = 0.018). The mean value for group 3 (2.7 ± 5.3 mm posterior) fell between group 1 and 3 but was not significantly different from group 1 (P = 0.31) or group 2 (P = 0.89). There were no significant differences with regards to sulcus angle, Caton-Deschamps Index, TTTG, or knee flexion angle on the MRI scan. Conclusions. A more posteriorly positioned tibial tubercle was observed in patients with patellar cartilage lesions relative to those with intact patellar cartilage. Intermediate positioning was observed in patients with asymptomatic patellar chondral wear. Level of Evidence. Level 3 diagnostic study.

中文翻译:

矢状胫骨结节-滑车沟距离作为有症状髌股关节软骨损伤患者矢状面不平衡的测量。

客观的。通过矢状胫骨结节-滑车沟 (sTTTG) 距离测量有和没有髌骨软骨病变的患者的胫骨结节的矢状面排列。设计。对接受髌股软骨修复或修复程序治疗的患者进行了回顾性研究(第 1 组;N = 17)。对照组患者(第 2 组;N = 20)接受部分半月板切除术,髌骨软骨正常。无症状的髌骨软骨病组(第 3 组;N = 15)被确定为接受部分半月板切除术并伴有髌骨软骨磨损的患者。sTTTG 是在术前轴向 T2 磁共振成像 (MRI) 序列上测量的。第一个点是前滑车软骨的最低点,第二个点是胫骨前结节。在这些点之间画了一条线,垂直于后髁轴。使用带有 Bonferroni 校正的方差检验分析在 3 组之间进行比较。显着性定义为 P < 0.05。结果。相对于第 2 组(0.8 ± 5.3 mm;P = 0.018),第 1 组的平均 sTTTG 明显更靠后(滑车槽后 5.9 ± 5.5 mm)。第 3 组的平均值(后 2.7 ± 5.3 毫米)落在第 1 组和第 3 组之间,但与第 1 组(P = 0.31)或第 2 组(P = 0.89)没有显着差异。在 MRI 扫描中,沟角、Caton-Deschamps 指数、TTTG 或膝关节屈曲角度没有显着差异。结论。相对于具有完整髌骨软骨的患者,髌骨软骨损伤患者的胫骨结节位于更靠后的位置。在无症状髌骨软骨磨损的患者中观察到中间体位。证据水平。3 级诊断研究。
更新日期:2020-01-22
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