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Scientific article
English

Anterior shoulder instability: histomorphometric study of the subscapularis and deltoid muscles

Contributors

Gamulin, Axel Dorian G.; Pizzolato, Gianpaolo; Stern, Richard; Hoffmeyer, Pierre

Published in

Clinical orthopaedics and related research, no. 398, p. 121-126

Publication date

2002

Abstract

Recurrent traumatic anterior shoulder dislocation results in soft tissues lesions around the glenohumeral joint. The subscapularis muscle is a major active stabilizer of the shoulder and the hypothesis of the current study is that one would expect pathologic changes within its substance secondary to the trauma. A histomorphometric study of the subscapularis muscle was done of 52 patients operated on for recurrent traumatic anterior shoulder dislocation. At the time of surgery biopsy specimens were taken of the subscapularis muscle and the ipsilateral deltoid muscle as a comparison and to see if any changes were present. The results revealed interstitial fibrosis within the subscapularis muscle compatible with muscle scarring, and modifications in the ratio of fiber types as usually is seen with disuse atrophy. Both of these findings may alter strength and stability and therefore the function of the glenohumeral joint. The histologic findings were not compatible with a denervation pattern. After traumatic anterior shoulder dislocation rehabilitation of the subscapularis muscle is recommended.

Keywords

  • Adolescent
  • Adult
  • Biopsy
  • Female
  • Humans
  • Joint Instability/etiology/pathology
  • Male
  • Muscle, Skeletal/injuries/pathology
  • Shoulder Dislocation/etiology/pathology
  • Shoulder Joint/injuries/pathology

UNIGE affiliation entities

UNIGE research groups

Citation (ISO format)

GAMULIN, Axel Dorian G. et al. Anterior shoulder instability: histomorphometric study of the subscapularis and deltoid muscles. In: Clinical orthopaedics and related research, 2002, n° 398, p. 121–126. doi: 10.1097/00003086-200205000-00017

Main files (1)

Article (Published version)

Identifiers

Journal ISSN

0009-921X
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Technical informations

Creation

29/01/2015 14:43:00

First validation

29/01/2015 14:43:00

Update

14/03/2023 22:47:33

Status update

14/03/2023 22:47:33

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