Posterior acetabular spike: an obstacle to reduction in long-standing hip dislocations.
The posterior insertion of the transverse acetabular ligament can be transformed into a toothlike bony prominence narrowing the acetabulum in its distal part. This deformity can impede the placement of the femoral head deep in the acetabulum, making a complete reduction impossible. The toothlike spike can be detected by computed tomography or by intraoperative palpation, and can be corrected by pushing it back with a punch under palpatory control.
Brunner
Reinald
R
Neuroorthopedic Unit, Department of Pediatric Orthopedics, University of Basle, Switzerland. reinaldbrunner@dplanet.ch
D000077:Acetabulum / Q000473:pathology*; D002648:Child; D005260:Female; D006617:Hip Dislocation / Q000473:pathology / Q000628:therapy*; D006801:Humans; D008022:Ligaments / Q000473:pathology*; D010173:Palpation; D014057:Tomography, X-Ray Computed