title: Glenohumeral interposition of rotator cuff stumps: a rare complication of traumatic rotator cuff tear.
abstract: The present report describes a case where typical findings of traumatic glenohumeral interposition of rotator cuff stumps were surgically confirmed. This condition is a rare complication of shoulder trauma. Generally, it occurs in high-energy trauma, frequently in association with glenohumeral joint dislocation. Radiography demonstrated increased joint space, internal rotation of the humerus and coracoid process fracture. In addition to the mentioned findings, magnetic resonance imaging showed massive rotator cuff tear with interposition of the supraspinatus, infraspinatus and subscapularis stumps within the glenohumeral joint. Surgical treatment was performed confirming the injury and the rotator cuff stumps interposition. It is important that radiologists and orthopedic surgeons become familiar with this entity which, because of its rarity, might be neglected in cases of shoulder trauma.
authors.affiliation: Physician Assistant at Division of Radiology, Hospital das Clínicas - Faculdade de Medicina de Ribeirão Preto da Universidade de São Paulo (HCFMRP-USP), Ribeirão Preto, SP, Brazil.
authors.forename: Paulo Moraes
authors.initials: PM
authors.lastname: Agnollitto
authors.affiliation: Volunteer Physician, Fellow of Musculoskeletal Radiology, Division of Radiology at Hospital das Clínicas - Faculdade de Medicina de Ribeirão Preto da Universidade de São Paulo (HCFMRP-USP), Ribeirão Preto, SP, Brazil.
authors.forename: Marcio Wen King
authors.initials: MW
authors.lastname: Chu
authors.affiliation: MD, Radiologist, Clínica Radiologia Especializada, Ribeirão Preto, SP, Brazil.
authors.forename: Mario Muller
authors.initials: MM
authors.lastname: Lorenzato
authors.affiliation: MD, Orthopedist, Hospital Especializado de Ribeirão Preto, Ribeirão Preto, SP, Brazil.
authors.forename: Salomão Chade Assan
authors.initials: SC
authors.lastname: Zatiti
authors.affiliation: Associate Professor of Radiology, Centro de Ciências das Imagens e Física Médica (CCIFM) - Faculdade de Medicina de Ribeirão Preto da Universidade de São Paulo (FMRP-USP), Ribeirão Preto, SP, Brazil.
authors.forename: Marcello Henrique
authors.initials: MH
authors.lastname: Nogueira-Barbosa
keywords: Interposition; Magnetic resonance imaging; Rotator cuff; Shoulder; Tear; Trauma