The coracoid process of the scapula is a vital landmark in shoulder surgery and has become increasingly popular as a basis for acromioclavicular joint (ACJ) stabilizations and bone transfer in the treatment of shoulder instability (Bristow–Latarjet procedure). As such, it is important that the anatomy and anatomical aberrations are well understood. We describe an aberrant structure noted during routine ACJ stabilization of a 24-year-old man using a coracoclavicular sling technique.
DumontierC, SautetA, GageyO, ApoilA. Rotator interval lesions and their relation to coracoid impingement syndrome. J Shoulder Elbow Surg1999; 8: 130–5.
2.
TubbsSR, OakesJW, SalterEG. Unusual attachment of the pectoralis minor muscle. Clin Anat2005; 18: 302–4.
3.
UzelAP, BertinoR, CaizP, BoileauP. Bilateral variation of the pectoralis minor muscle discovered during practical dissection. Surg Radiol Anat2007; 30: 679–82.
Le DoubleAF. Treaty on the variations of the muscular system of Man.Paris: Schleicher, 1897.
8.
HomsiC, RodriguesMB, SilvaJJ, StumpX, MorvanG. Anomalous insertion of the pectoralis minor muscle: ultrasound findings. J Radiol2003; 84: 1007–11.
9.
MoineauG, CikesA, TrojaniC, BoileauP. Ectopic insertion of the pectoralis minor: implication in the arthroscopic treatment of shoulder stiffness. Knee Surg Sports Traumatol Arthrosc2007; 16: 869–71.
