MRI analysis of risk factors associated with patellar tendon-lateral femoral condyle friction syndrome
10.3969/j.issn.1002-1671.2025.08.021
- VernacularTitle:髌腱-股骨外髁撞击综合征相关危险因素的MRI分析
- Author:
Yina XU
1
;
Binqing ZHANG
1
;
Ying ZHAO
1
Author Information
1. 河南省洛阳正骨医院(河南省骨科医院)影像中心,河南 洛阳 471000
- Publication Type:Journal Article
- Keywords:
patellar tendon-lateral femoral condyle friction syndrome;
Install-Salvati index;
tibial tubercle to trochlear groove distance;
magnetic resonance imaging
- From:
Journal of Practical Radiology
2025;41(8):1352-1356
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the correlation between patellar tendon-lateral femoral condyle friction syndrome(PT-LFCFS)and bony anatomical abnormalities of the patellofemoral joint.Methods Univariate analysis and multivariate binary logistic regression analysis were performed on MRI measurement data of bony anatomical structures related to patellofemoral joint in 65 knee joints from 59 subjects(29 cases in the patient group and 30 cases in the control group).Based on the results,the pathogenic factors of PT-LFCFS were identified.Results Univariate analysis revealed statistically significant differences between the two groups in the Install-Salvati index(t=8.947,P＜0.001),trochlear groove depth(TGD)(t=-3.540,P=0.001),trochlear facet asymmetry(TFA)(t=—5.598,P＜0.001),lateral trochlear inclination(LTI)(t=—4.453,P＜0.001),patellar displacement(PD)(t=4.358,P＜0.001),tibial tubercle to trochlear groove(TT-TG)distance(Z=—4.814,P＜0.001),patellar tilt angle(PTA)(Z=-3.927,P＜0.001).Multivariate binary logistic regression analysis results showed that an increased Install-Salvati index[P=0.004,odds ratio(OR)=7.324]was a risk factor for the occurrence of the PT-LFCFS.Conclusion PT-LFCFS is associated with bony anatomical abnormalities indicating patellar instability,such as patella alta,increased TT-TG distance,and trochlear dysplasia.An increased Install-Salvati index is a bony anatomical structure risk factor for the occurrence of PT-LFCFS.
