Relationship of clinical measures with humeral torsion in young adults: a pilot study

Humeral retroversion alters range of motion and has been linked to injury risk. Clinically,palpation of the bicipital groove is used to quantify humeral torsion, but the accuracy of this procedure has not been fully examined. The purpose of this study was to investigate the relationship between clin...

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Bibliographic Details
Published in:The Journal of manual & manipulative therapy 2021-11, Vol.29 (6), p.360-366
Main Authors: Werner, David M., Bellm, Eric V., Day, Joseph M.
Format: Article
Language:English
Subjects:
Humans
Humerus - diagnostic imaging
manual therapy
overhead athlete
palpation
Pilot Projects
Reproducibility of Results
shoulder
Ultrasound
Young Adult
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Summary:Humeral retroversion alters range of motion and has been linked to injury risk. Clinically,palpation of the bicipital groove is used to quantify humeral torsion, but the accuracy of this procedure has not been fully examined. The purpose of this study was to investigate the relationship between clinical and diagnostic ultrasound (US) assessment of humeral torsion while considering shoulder position of the participant and clinical expertise of the examiner. Seventeen participants (34 shoulders, 16/17 right handed, 10/17 history of throwing) were recruited. US was assessed by an experienced assessor. Two clinical assessments of humeral torsion were performed by two assessors of different experience (expert and novice). Humeral torsion was assessed at 90 degrees shoulder abduction (Palp90) and 45 degrees shoulder abduction (Palp45). Within assessor intraclass correlation coefficients (ICC (3, 1) were calculated. Correlation coefficients (Pearson's) were generated to determine relationship between clinical and US examination findings. Intra-rater reliability for clinical tests were good (ICCs .73 - .92) for both raters. Of the palpation tests, only the expert assessor was significantly correlated to the US measurement (p
ISSN:1066-9817
2042-6186
DOI:10.1080/10669817.2021.1930861