A case report of a rupture of the musculotendinous junction of the pectoralis major in an athlete

INTRODUCTION: The pectoralis major muscle (PM) is a large muscle on the anterior chest wall. The rupture of the PM is a rare entity in literature and most incidences had been reported frequently in weight lifting and contact sports. Acute repair of PM rupture yielded better outcome as compared to non-operative treatment in active individuals who wish to return to their sports. CASE REPORT: We presented a case of a champion in bodybuilding who lifted a heavy weigh during his routine exercises, which caused a rupture in the musculotendinous junction of the left pectoralis major muscle. DISCUSSION: As it is rare to meet ruptures in this site of pectoralis major, we decided to insert anchors into the humeral bone (as in avulsions and tendon's tears), and to duplicate the suturing levels in multiple directions (as in muscular belly ruptures). CONCLUSION: Our aim here is to confirm that the rupture of the musculotendinous junction of the pectoralis major muscle is rare and difficult to deal, but the acute surgical treatment by inserting anchors into the humerus, and duplicating the suturing layers in multiple directions can give good results especially in athletes.