Deltoid Ligament and Tibiofibular Syndesmosis Injury in Chronic Lateral Ankle Instability: Magnetic Resonance Imaging Evaluation at 3T and Comparison with Arthroscopy.
10.3348/kjr.2015.16.5.1096
- Author:
Ka Young CHUN
1
;
Yun Sun CHOI
;
Seok Hoon LEE
;
Jin Su KIM
;
Ki Won YOUNG
;
Min Sun JEONG
;
Dae Jung KIM
Author Information
1. Department of Radiology, Eulji Hospital, Eulji University, Seoul 01830, Korea. mdcys0128@hanmail.net
- Publication Type:Original Article
- Keywords:
Chronic ankle instability;
Lateral collateral ligament;
Deltoid ligament;
Syndesmosis;
Magnetic resonance imaging;
3T
- MeSH:
Adolescent;
Adult;
Ankle Injuries/pathology/*radiography;
Ankle Joint/*radiography;
Arthroscopy;
Chronic Disease;
Female;
Humans;
Joint Instability/pathology/radiography/*surgery;
Ligaments, Articular/pathology/radiography;
*Magnetic Resonance Imaging;
Male;
Middle Aged;
Young Adult
- From:Korean Journal of Radiology
2015;16(5):1096-1103
- CountryRepublic of Korea
- Language:English
-
Abstract:
OBJECTIVE: To evaluate the prevalence of deltoid ligament and distal tibiofibular syndesmosis injury on 3T magnetic resonance imaging (MRI) in patients with chronic lateral ankle instability (CLAI). MATERIALS AND METHODS: Fifty patients (mean age, 35 years) who had undergone preoperative 3T MRI and surgical treatment for CLAI were enrolled. The prevalence of deltoid ligament and syndesmosis injury were assessed. The complexity of lateral collateral ligament complex (LCLC) injury was correlated with prevalence of deltoid or syndesmosis injuries. The diagnostic accuracy of ankle ligament imaging at 3T MRI was analyzed using arthroscopy as a reference standard. RESULTS: On MRI, deltoid ligament injury was identified in 18 (36%) patients as follows: superficial ligament alone, 9 (50%); deep ligament alone 2 (11%); and both ligaments 7 (39%). Syndesmosis abnormality was found in 21 (42%) patients as follows: anterior inferior tibiofibular ligament (AITFL) alone, 19 (90%); and AITFL and interosseous ligament, 2 (10%). There was no correlation between LCLC injury complexity and the prevalence of an accompanying deltoid or syndesmosis injury on both MRI and arthroscopic findings. MRI sensitivity and specificity for detection of deltoid ligament injury were 84% and 93.5%, and those for detection of syndesmosis injury were 91% and 100%, respectively. CONCLUSION: Deltoid ligament or syndesmosis injuries were common in patients undergoing surgery for CLAI, regardless of the LCLC injury complexity. 3T MRI is helpful for the detection of all types of ankle ligament injury. Therefore, careful interpretation of pre-operative MRI is essential.
