Citation, DOI & article data
Hip dislocation is a relatively rare entity and may be congenital or acquired.
Hip dislocations account for ~5% of all dislocations 3.
There are numerous patterns of dislocation 1:
- posterior hip dislocation (most common ~85%)
anterior hip dislocation (~10%)
- inferior (obturator) hip dislocation
- superior (pubic/iliac) hip dislocation (rare)
- central hip dislocation - always associated with acetabular fracture 2,3
Hip dislocation can be further classified as being simple (pure without associated fracture) or complex (dislocation associated fracture of the acetabulum or proximal femur) 6.
Acquired hip dislocation is normally associated with high-speed trauma, with motor vehicle collisions accounting for half of the dislocations with other causes such as falls and sports injuries, less common 1.
Hip dislocation is the second most common complication of hip joint replacements and occurs in ~5% (range 0.5-10%) of patients with ~60% of dislocations being recurrent 5.
Congenital hip dislocation is now considered part of the spectrum of developmental dysplasia of the hip (see this article for further information) 4.
- avascular necrosis: particularly if reduction postponed more than 24 hours
- 1. Stannard J, Schmidt A. Surgical Treatment of Orthopaedic Trauma. TNY. ISBN:B005WKJAGS. Read it at Google Books - Find it at Amazon
- 2. Jorge A. Soto, Brian C. Lucey. Emergency Radiology. (2009) ISBN: 9780323054072 - Google Books
- 3. Wolfgang Dähnert. Radiology Review Manual. (2011) ISBN: 9781609139438 - Google Books
- 4. Sewell M, Rosendahl K, Eastwood D. Developmental Dysplasia of the Hip. BMJ. 2009;339(nov24 2):b4454. doi:10.1136/bmj.b4454 - Pubmed
- 5. Blom A, Rogers M, Taylor A, Pattison G, Whitehouse S, Bannister G. Dislocation Following Total Hip Replacement: The Avon Orthopaedic Centre Experience. Ann R Coll Surg Engl. 2008;90(8):658-62. doi:10.1308/003588408X318156 - Pubmed
- 6. Stannard J, Harris H, Volgas D, Alonso J. Functional Outcome of Patients With Femoral Head Fractures Associated With Hip Dislocations. Clin Orthop Relat Res. 2000;377(377):44-56. doi:10.1097/00003086-200008000-00008 - Pubmed