Differential diagnosis of MRI signs of traumatic and non-traumatic rotator cuff tears
10.3969/j.issn.1002-1671.2024.09.022
- VernacularTitle:创伤性和非创伤性肩袖撕裂的MRI征象鉴别分析
- Author:
Yisi XIANG
1
;
Zhiyu WANG
;
Weiyan ZHAO
;
Liangliang CHEN
;
Chenglei LIU
Author Information
1. 宣城市人民医院影像科,安徽 宣城 242000
- Keywords:
rotator cuff tear;
trauma;
magnetic resonance imaging;
imaging indicator
- From:
Journal of Practical Radiology
2024;40(9):1494-1498
- CountryChina
- Language:Chinese
-
Abstract:
Objective To explore the differences in MRI signs between traumatic and non-traumatic rotator cuff tears and their correlation with the degree of rotator cuff tears.Methods A retrospective analysis was conducted on the clinical data and MRI man-ifestations of 82 patients in the trauma group and 80 patients in the non-trauma group with rotator cuff tears confirmed by arthroscopy.MRI indicators included 10 parameters:the degree of rotator cuff tear,tendon kinking-sign,tendon retraction,muscle edema,fatty degeneration,muscle atrophy,long head of the biceps tendon injury,acromion type,acromio-humeral distance(AHD),and lateral acro-mion angle(LAA).The clinical data and MRI indicators of the two groups were compared,and the correlation between MRI indica-tors and the degree of rotator cuff tears was analyzed.Results There were no significant difference in age and gender between the trauma group and the non-trauma group(P＞0.05),but the onset time of symptoms was significantly shorter in the trauma group compared to the non-trauma group(30 d vs 135 d,P＜0.001).Muscle edema,tendon kinking-sign,and long head of the biceps tendon injury were more common in the trauma group(P＜0.05),while fatty degeneration and type Ⅲ acromion were more common in the non-trauma group.The average AHD was smaller in the non-trauma group compared to the trauma group(P＜0.001).In addition,type Ⅲ acromion was more commonly seen in full-thickness rotator cuff tears,and AHD value was negatively correlated with the degree of rotator cuff tears(P＜0.05).Conclusion Muscle edema,tendon kinking-sign,and long head of the biceps tendon injury on MRI are highly suggestive of traumatic rotator cuff tears,while fatty degeneration,type Ⅲ acromion and smaller AHD indicate non-traumatic rotator cuff tears.Type Ⅲ acromion and decreased AHD increase the risk of full-thickness rotator cuff tears.
