Conclusions—Surgical repair results in greater recovery of peak torque and work performed than conservative management of patients with rupture of the pectoralis major.

The pectoralis major is a powerful shoulder adductor that ... and is advised to accept the weakness of adduction. Surgical repair should be complemented with a well-supervised rehabilitation ...

They found that their results correlated well with surgical findings and concluded that MRI allows accurate evaluation of injuries of the pectoralis major muscle and enables identification of patients ...