|
KMID : 0363120200330010060
|
|
Korean Journal of Pain
2020 Volume.33 No. 1 p.60 ~ p.65
|
|
|
Evaluation of the cross-sectional area of acromion process for shoulder impingement syndrome
|
|
Joo Young
Cho Hyung-Rae
Kim Young-Uk
|
|
|
Abstract
|
|
|
Background: Anatomic changes in the acromion have been considered a main cause of shoulder impingement syndrome (SIS). To evaluate the relationship between SIS and the acromion process, we devised a new morphological parameter called the acromion process cross-sectional area (APA). We hypothesized that the APA could be an important morphologic diagnostic parameter in SIS.
Methods: We collected APA data from 95 patients with SIS and 126 control subjects who underwent shoulder magnetic resonance imaging (MRI). Then we measured the maximal cross-sectional area of the bone margin of the acromion process on MRI scans.
Results: The mean of APAs were 136.50 ± 21.75 mm2 in the male control group and 202.91 ± 31.78 mm2 in the male SIS group; SIS patients had significantly greater APAs (P < 0.001). The average of APAs were 105.38 ± 19.07 mm2 in the female control group and 147.62 ± 22.90 mm2 in the female SIS group, and the SIS patients had significantly greater APAs (P < 0.001). The optimal APA cut-off in the male group was 165.14 mm2 with 90.2% sensitivity, 91.4% specificity, and an area under the curve (AUC) of 0.968. In the female group, the optimal cut-off was 122.50 mm2 with 85.2% sensitivity, 84.9% specificity, and an AUC of 0.928.
Conclusions: The newly devised APA is a sensitive parameter for assessing SIS; greater APA is associated with a higher possibility of SIS. We think that this result will be helpful for the diagnosis of SIS.
|
|
|
KEYWORD
|
|
|
Acromion, Anatomy, Cross-Sectional, Diagnosis, Osteophyte, Parameter, Process, Shoulder, Shoulder Impingement Syndrome
|
|
|
FullTexts / Linksout information
|
|
 
|
|
|
Listed journal information
|
|
   
|
|