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Measurement of the coracohumeral distance on magnetic resonance imaging in a large patient cohort
- Source :
- Journal of shoulder and elbow surgery. 30(2)
- Publication Year :
- 2019
-
Abstract
- Background Coracoid impingement syndrome is an increasingly recognized etiology of anterior shoulder pain. Numerus studies have documented the coracohumeral distance (CHD) as a primary or secondary measurement in symptomatic individuals, but there lacks an evaluation of CHD in a large cohort of asymptomatic individuals. The purpose of this study was to quantify a normative distribution of the CHD in a large cohort of healthy, asymptomatic subjects with no history of impingement or shoulder instability. Methods Incoming first-year students in the United States Military Academy were offered enrollment in this study as part of a prospective cohort to assess the normal anatomic relationships of the shoulder girdle. Magnetic resonance images were obtained, and a board-certified, fellowship-trained musculoskeletal radiologist performed measurements of the smallest distance from the coracoid to the humeral head on axial images. Results Magnetic resonance images of 714 subjects were available for analysis, including 630 males and 84 females, with a total of 1120 individual shoulders with images of adequate quality. The mean CHD for all shoulders imaged was 13.7 mm. The mean CHD in male shoulders was 13.8 mm, and in female subjects the average was 12.4 mm. Conclusions This study is the largest of its kind to evaluate the CHD in asymptomatic, healthy shoulders to date and demonstrates a mean CHD of 13.7 mm for all subjects. This information can help to standardize “normal” ranges and act as a comparison for future work, when taken in the context of age and imaging in neutral rotation.
- Subjects :
- Joint Instability
Male
medicine.medical_specialty
Shoulders
Context (language use)
Coracoid process
Asymptomatic
Coracoid
03 medical and health sciences
0302 clinical medicine
Medicine
Humans
Orthopedics and Sports Medicine
Prospective Studies
Prospective cohort study
030222 orthopedics
business.industry
Shoulder Joint
030229 sport sciences
General Medicine
Anterior shoulder
Magnetic Resonance Imaging
medicine.anatomical_structure
Shoulder Impingement Syndrome
Cohort
Surgery
Female
Radiology
medicine.symptom
business
Subjects
Details
- ISSN :
- 15326500
- Volume :
- 30
- Issue :
- 2
- Database :
- OpenAIRE
- Journal :
- Journal of shoulder and elbow surgery
- Accession number :
- edsair.doi.dedup.....c140add9d32452ee1e8d00a0dbc4fc32