The subscapularis muscle is one of the four rotator cuff muscles. It is the large one at the front of the shoulder. It is the largest & strongest cuff muscle providing 53% of total cuff strength.
The upper 60% of the insertion is tendinous and the lower 40% muscle.
It functions to turn the arm inwards and also helps in lifting movements, swimming and overhead activities.
» Tears of the Subscapularis :
It tears less often than the other rotator group muscles, but when it does it causes dislocation of the biceps tendon from its groove.
A person with a subscapularis tear will have pain at the front of the shoulder and weakness with activities that involve forward lifting, twisting the arm inwards and sports.
» Investigations :
» Treatment :
The Elderly and Patient with very Low demands do very well with conservative management physiotherapy.
In young and active adults a mini-open repair of the tendon is performed.