title: [Locked posterior dislocation of the hip: a case report].
abstract: Impaction fractures of the femoral head occurring after anterior or posterior hip dislocations are well described. However, locked posterior hip dislocation resulting in sinking of the posterior acetabular rim into the femoral head has hitherto been undescribed. A 26-year-old male patient presented with complaints of severe pain in the left thigh and marked limitation in the movements of the left hip two weeks after an in-car crash. He could only walk with crutches. Shortly after the accident, he was examined at another center with physical examination and plain radiographies and was given bed rest and medications for pain relief. Computed tomography demonstrated the locked posterior hip by the impact of the posterior acetabular rim against the femoral head. At surgery, the posterior acetabular rim was embedded in the anteromedial surface of the femoral head resulting in an osteochondral impaction fracture with a penetration depth of 12 mm. Due to wide destruction to the cartilage surface, an uncemented bipolar hemiarthroplasty was performed. After 28 months of follow-up, he had no complaints and hip movements were painless with full range of motion.
authors.affiliation: Department of Orthopedics and Traumatology (Ortopedi ve Travmatoloji Anabilim Dali), Medicine Faculty of Inönü University, Malatya, Turkey. iesenkaya@hotmail.com
authors.forename: Irfan
authors.initials: I
authors.lastname: Esenkaya
authors.forename: Nurzat
authors.initials: N
authors.lastname: Elmali
mesh_terms: D000063:Accidents, Traffic; D000077:Acetabulum / Q000293:injuries*; D000328:Adult; D003937:Diagnosis, Differential; D005265:Femoral Neck Fractures / Q000150:complications / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D005270:Femur Head / Q000293:injuries*; D006617:Hip Dislocation / Q000150:complications / Q000175:diagnosis* / Q000000981:diagnostic imaging / Q000473:pathology / Q000601:surgery; D006801:Humans; D008297:Male; D010147:Pain Measurement; D014057:Tomography, X-Ray Computed