title: Musculotendinous infraspinatus rupture and shoulder weakness.
abstract: We report a patient with bilateral simultaneous onset of weakness of shoulder lateral rotation due to musculotendinous infraspinatus rupture that occurred after shoulder steroid injections. Disruption of the musculotendinous junction of the infraspinatus is a rare recently described entity. Electromyography is normal, and magnetic resonance image findings are characteristic.
authors.affiliation: Department of Neurology, Mayo Clinic, Rochester, MN 55905, USA.
authors.forename: Melissa C
authors.initials: MC
authors.lastname: Lipford
authors.forename: Jeffrey R
authors.initials: JR
authors.lastname: Bond
authors.forename: Scott P
authors.initials: SP
authors.lastname: Steinmann
authors.forename: Neeraj
authors.initials: N
authors.lastname: Kumar
mesh_terms: D003937:Diagnosis, Differential; D006801:Humans; D007270:Injections, Intra-Articular / Q000009:adverse effects; D008297:Male; D008875:Middle Aged; D017006:Rotator Cuff / Q000473:pathology; D000070636:Rotator Cuff Injuries; D012421:Rupture / Q000139:chemically induced / Q000175:diagnosis / Q000473:pathology; D020069:Shoulder Pain / Q000175:diagnosis / Q000188:drug therapy*; D013256:Steroids / Q000008:administration & dosage / Q000009:adverse effects*; D013708:Tendon Injuries / Q000139:chemically induced* / Q000175:diagnosis / Q000473:pathology
chemical_list: D013256:Steroids