[Evaluation of morphologic changes of the rabbit supraspinal muscle]

The aim of this study was to evaluate morphologic changes within rabbit supraspinatus after detachment of its tendon from the greater tubercle along with infraspinatus and subscapularis tenotomy. Stained with hematoxylin and eosin muscle sample has been examined after 6 weeks (group A), 3 months (group B) and 6 months (group C). There were 10 rabbits in each group. The muscle atrophy was accompanied by statistically significant increase of the interstitium volume in group B (24.5%) and C (26.3%) as opposed to A (15.4%). Statistically significant differences were also found in interstitium volume of tenotomized and contralateral supraspinatus muscle.