Subacromial Motion Metrics in Painful Shoulder Impingement: A Dynamic Quantitative Ultrasonography Analysis.
Arch Phys Med Rehabil
; 104(2): 260-269, 2023 02.
Article
in En
| MEDLINE
| ID: mdl-36055380
ABSTRACT
OBJECTIVES:
To explore the subacromial motion metrics in patients with and without subacromial impingement syndrome (SIS) and to investigate whether the abnormality was associated with rotator cuff pathologies.DESIGN:
This cross-sectional observational study used dynamic quantitative ultrasonography imaging for shoulder joint assessment.SETTING:
Outpatient rehabilitation clinic.PARTICIPANTS:
Individuals with SIS on at least 1 shoulder (n=32) and asymptomatic controls (n=32) (N=64).INTERVENTIONS:
Not applicable. MAIN OUTCOMEMEASURES:
Frame-by-frame, the humeral greater tuberosity against the lateral edge of the acromion was traced to obtain the minimal vertical acromiohumeral distance (AHD). The rotation angle and radius of the humerus were computed using the least-squares curve fitting method.RESULTS:
Approximately two-thirds of the shoulders with SIS did not have any sonographically identifiable rotator cuff pathologies. There was a consistent trend of nonsignificantly increased humeral rotation angles in painful shoulders. The generalized estimating equation demonstrated that the decreased minimal vertical AHD was associated with painful subacromial impingement (ß coefficient -0.123cm, 95% confidence interval [CI], -0.199 to -0.047). The area under the curve for the minimal vertical AHD to discriminate painful or impinged shoulders ranged from 0.624-0.676. The increased rotation angle (ß coefficient 10.516°; 95% CI, 3.103-17.929) and decreased rotation radius (ß coefficient -2.903cm; 95% CI, -5.693 to -0.111) were shown to be significantly related to the presence of supraspinatus tendinopathy.CONCLUSIONS:
Shoulders with SIS were characterized by a decreased minimal vertical AHD during dynamic examination. Abnormal subacromial metrics can develop in patients with mild (or no) rotator cuff pathologies. More prospective cohort studies are warranted to investigate the changes in subacromial motion metrics in populations at risk for painful or impinged shoulders.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Shoulder Joint
/
Shoulder Impingement Syndrome
Type of study:
Observational_studies
/
Prognostic_studies
/
Risk_factors_studies
Limits:
Humans
Language:
En
Journal:
Arch Phys Med Rehabil
Year:
2023
Document type:
Article
Affiliation country:
Taiwan