title: The bifid anterior coracoscapular ligament: a new morphological variation and its potential clinical implications.
abstract: The suprascapular notch (SSN) is the most common site of compression and  injury of the suprascapular nerve (SN), which results in a neuropathy known as  SN entrapment. The SSN is enclosed from the top by the superior transverse  scapular ligament (STSL), creating a tunnel for the SN. On both sides of the  SSN, below the STSL, the anterior coracoscapular ligament is found. This fibrous  band can potentially narrow the opening and contribute to the occurrence  of suprascapular entrapment syndrome. This study presents the first case  of a bifid anterior coracoscapular ligament coexisting with an atypical SN course,  which has never been described in the literature before. Knowledge of such  anatomical variations can be helpful in arthroscopic and open procedures of  the suprascapular region and confirms the safety of operative decompression  for entrapment of the SN.
authors.affiliation: Department of Angiology, Medical University of Lodz, Lodz, Poland. michal.polguj@umed.lodz.pl
authors.forename: M
authors.initials: M
authors.lastname: Polguj
authors.forename: K
authors.initials: K
authors.lastname: Jędrzejewski
authors.forename: M
authors.initials: M
authors.lastname: Topol
mesh_terms: D000369:Aged, 80 and over; D001416:Back Pain / Q000473:pathology*; D002102:Cadaver; D004210:Dissection; D005260:Female; D006801:Humans; D008022:Ligaments / Q000002:abnormalities* / Q000033:anatomy & histology / Q000294:innervation; D009408:Nerve Compression Syndromes / Q000473:pathology*; D012540:Scapula / Q000002:abnormalities* / Q000033:anatomy & histology / Q000294:innervation