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KEY FACTS
Imaging
Pathology
Clinical Issues
Diagnostic Checklist
TERMINOLOGY
Abbreviations
- Posterior hip dislocation (PHD)
- Anterior hip dislocation (AHD)
Synonyms
- Hip subluxation, femoroacetabular dislocation or subluxation
Definitions
- Disarticulation of femoral head relative to acetabulum
- PHD: femoral head posterior to acetabulum
- AHD: femoral head anterior to acetabulum
- Transient dislocation: femoroacetabular alignment spontaneously restored after dislocation
- Internal dislocation: femoral head displaced centrally into pelvis through acetabular fracture
- Usually not considered true hip dislocation
- Disarticulation of femoral head relative to acetabulum
IMAGING
General Features
Radiographic Findings
CT Findings
MR Findings
Imaging Recommendations
DIFFERENTIAL DIAGNOSIS
PATHOLOGY
General Features
Staging, Grading, & Classification
Gross Pathologic & Surgical Features
CLINICAL ISSUES
Presentation
Demographics
Natural History & Prognosis
Treatment
DIAGNOSTIC CHECKLIST
Consider
Image Interpretation Pearls
Selected References
- Jia C et al: Understanding a rare injury: an observational study of anterior-superior hip dislocations. AJR Am J Roentgenol. 214(3):624-9, 2020
- Mandell JC et al: Traumatic hip dislocation: what the orthopedic surgeon wants to know. Radiographics. 37(7):2181-201, 2017
- Kellam P et al: Systematic review and meta-analysis of avascular necrosis and posttraumatic arthritis after traumatic hip dislocation. J Orthop Trauma. 30(1):10-6, 2016
- de Palma L et al: Outcome of unstable isolated fractures of the posterior acetabular wall associated with hip dislocation. Eur J Orthop Surg Traumatol. 24(3):341-6, 2013
- Harnroongroj T et al: Posterior acetabular arc angle of the femoral head assesses instability of posterior fracture-dislocation of the hip. Int Orthop. 37(6):1141-5, 2013
- Steppacher SD et al: Femoroacetabular impingement predisposes to traumatic posterior hip dislocation. Clin Orthop Relat Res. 471(6):1937-43, 2013
- Boykin RE et al: Hip instability. J Am Acad Orthop Surg. 19(6):340-9, 2011
- Dunbar RP Jr et al: Sciatic nerve entrapment in associated both-column acetabular fractures: a report of 2 cases and review of the literature. J Orthop Trauma. 23(1):80-3, 2009
- Herrera-Soto JA et al: Traumatic hip dislocations in children and adolescents: pitfalls and complications. J Am Acad Orthop Surg. 17(1):15-21, 2009
- Pascarella R et al: Intra-articular fragments in acetabular fracture-dislocation. Orthopedics. 32(6):402, 2009
- Philippon MJ et al: Arthroscopic findings following traumatic hip dislocation in 14 professional athletes. Arthroscopy. 25(2):169-74, 2009
- Uzel AP et al: Hip subluxation associated with Pipkin II fracture: an injury to look for before reduction. Musculoskelet Surg. 93(1):33-5, 2009
- Sah AP et al: Traumatic simultaneous asymmetric hip dislocations and motor vehicle accidents. Orthopedics. 31(6):613, 2008
- Bhandari M et al: Predictors of clinical and radiological outcome in patients with fractures of the acetabulum and concomitant posterior dislocation of the hip. J Bone Joint Surg Br. 88(12):1618-24, 2006
- Sahin V et al: Traumatic dislocation and fracture-dislocation of the hip: a long-term follow-up study. J Trauma. 54(3):520-9, 2003
- Brooks RA et al: Diagnosis and imaging studies of traumatic hip dislocations in the adult. Clin Orthop Relat Res. (377):15-23, 2000
- Fairbairn KJ et al: Gas bubbles in the hip joint on CT: an indication of recent dislocation. AJR Am J Roentgenol. 164(4):931-4, 1995
Related Anatomy
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References
Tables
Tables
KEY FACTS
Imaging
Pathology
Clinical Issues
Diagnostic Checklist
TERMINOLOGY
Abbreviations
- Posterior hip dislocation (PHD)
- Anterior hip dislocation (AHD)
Synonyms
- Hip subluxation, femoroacetabular dislocation or subluxation
Definitions
- Disarticulation of femoral head relative to acetabulum
- PHD: femoral head posterior to acetabulum
- AHD: femoral head anterior to acetabulum
- Transient dislocation: femoroacetabular alignment spontaneously restored after dislocation
- Internal dislocation: femoral head displaced centrally into pelvis through acetabular fracture
- Usually not considered true hip dislocation
- Disarticulation of femoral head relative to acetabulum
IMAGING
General Features
Radiographic Findings
CT Findings
MR Findings
Imaging Recommendations
DIFFERENTIAL DIAGNOSIS
PATHOLOGY
General Features
Staging, Grading, & Classification
Gross Pathologic & Surgical Features
CLINICAL ISSUES
Presentation
Demographics
Natural History & Prognosis
Treatment
DIAGNOSTIC CHECKLIST
Consider
Image Interpretation Pearls
Selected References
- Jia C et al: Understanding a rare injury: an observational study of anterior-superior hip dislocations. AJR Am J Roentgenol. 214(3):624-9, 2020
- Mandell JC et al: Traumatic hip dislocation: what the orthopedic surgeon wants to know. Radiographics. 37(7):2181-201, 2017
- Kellam P et al: Systematic review and meta-analysis of avascular necrosis and posttraumatic arthritis after traumatic hip dislocation. J Orthop Trauma. 30(1):10-6, 2016
- de Palma L et al: Outcome of unstable isolated fractures of the posterior acetabular wall associated with hip dislocation. Eur J Orthop Surg Traumatol. 24(3):341-6, 2013
- Harnroongroj T et al: Posterior acetabular arc angle of the femoral head assesses instability of posterior fracture-dislocation of the hip. Int Orthop. 37(6):1141-5, 2013
- Steppacher SD et al: Femoroacetabular impingement predisposes to traumatic posterior hip dislocation. Clin Orthop Relat Res. 471(6):1937-43, 2013
- Boykin RE et al: Hip instability. J Am Acad Orthop Surg. 19(6):340-9, 2011
- Dunbar RP Jr et al: Sciatic nerve entrapment in associated both-column acetabular fractures: a report of 2 cases and review of the literature. J Orthop Trauma. 23(1):80-3, 2009
- Herrera-Soto JA et al: Traumatic hip dislocations in children and adolescents: pitfalls and complications. J Am Acad Orthop Surg. 17(1):15-21, 2009
- Pascarella R et al: Intra-articular fragments in acetabular fracture-dislocation. Orthopedics. 32(6):402, 2009
- Philippon MJ et al: Arthroscopic findings following traumatic hip dislocation in 14 professional athletes. Arthroscopy. 25(2):169-74, 2009
- Uzel AP et al: Hip subluxation associated with Pipkin II fracture: an injury to look for before reduction. Musculoskelet Surg. 93(1):33-5, 2009
- Sah AP et al: Traumatic simultaneous asymmetric hip dislocations and motor vehicle accidents. Orthopedics. 31(6):613, 2008
- Bhandari M et al: Predictors of clinical and radiological outcome in patients with fractures of the acetabulum and concomitant posterior dislocation of the hip. J Bone Joint Surg Br. 88(12):1618-24, 2006
- Sahin V et al: Traumatic dislocation and fracture-dislocation of the hip: a long-term follow-up study. J Trauma. 54(3):520-9, 2003
- Brooks RA et al: Diagnosis and imaging studies of traumatic hip dislocations in the adult. Clin Orthop Relat Res. (377):15-23, 2000
- Fairbairn KJ et al: Gas bubbles in the hip joint on CT: an indication of recent dislocation. AJR Am J Roentgenol. 164(4):931-4, 1995
