18 months out from a sizeable full+partial tear, shoulder function and strength is better than it was prior to injury.
i opted to not have surgery.
supraspinatus is a small muscle and, apart from initiating arm abduction, orients the shoulder girdle; my approach to managing and recovering from the injury involved stretching and loading to activate and realign tendon tissue.
i found the main problems, and resolution, arose in the bigger muscles - trapezius, lev scap, subscap, infraspinatus and the lat. chronic misalignment here manifests in the torso, hip and lower back myofascia. this is where i focussed.
it takes time; tendons have limited blood supply and repair at glacial pace. however, contrary to conventional wisdom, they can:
vvv
www.shoulderdoc.co.uk/article/1029www.shoulderdoc.co.uk/article.asp?article=384§ion=419&
"Tendon Injury and Tendinopathy: Healing and Repair"
Pankaj Sharma and Nicola Maff
J. Bone Joint Surg. Am. 87:187-202, 2005
PM me if you want copies of the articles.
cheers and good luck
denis