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Acetabular Dysplasia Q65.8

Center-edge angle xray

synonyms: developmental dysplasia of the hip,

Acetabular Dysplasia ICD-10

  • Q65.8: Other congenital deformities of hip

Acetabular Dysplasia Etiology / Epidemiology / Natural History

Acetabular Dysplasia Anatomy

Acetabular Dysplasia Clinical Evaluation

Acetabular Dysplasia Xray / Diagnositc Tests

  • Center-edge angle of Wiberg: Normal >25º. <25º indicates acetabular dysplasia (Wiberg G, Acta Chir Scand. 1939;83suppl 58;5-135)
  • Acetabular index/Tönnis angle should be less than 10°.

Acetabular Dysplasia Classification / Treatment

  • Crowe Classification: Type I = <50% subluxation, Type II = 50%-75% subluxation, Type III = 75%-100% subluxation, Type IV = 100% subluxation. (Crowe JF, JBJS 1979;61A:15).
  • Periacetabular Osteotomy (Troelson A, JBJS 2009;91:2169). 81% survivorship at 9.2 years.
  • THA
  • THA with subtrochanteric Osteotomy indicated for Crowe Type IV dysplasia. (Krych AJ, JBJS 2009;91A:2213).

Acetabular Dysplasia Associated Injuries / Differential Diagnosis

  • Acetabular labral tears

Acetabular Dysplasia Complications

Acetabular Dysplasia Follow-up Care

Acetabular Dysplasia Review References