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Pelvic Avulsion Fracture



ICD-9 Classification / Treatment
Etiology / Epidemiology / Natural History Associated Injuries / Differential Diagnosis
Anatomy Complications
Clinical Evaluation Follow-up Care
Xray / Diagnositc Tests Review References

synonyms: ischial tuberosity fracture, ischial tuberosity avulsion fracture

Pelvic Avulsion Fracture ICD-9

Pelvic Avulsion Fracture Etiology / Epidemiology / Natural History

  • Most commonly occurs at the ischial apophysis where the hamstrings insert.
  • Generally occurs in adolescence. Rare otherwise.

Pelvic Avulsion Fracture Anatomy

  • Hamstrings = Biceps(long head)[tibial n] and Biceps(short head[peroneal n]), Semitendinosus[tibial n], Semimembranosus[tibial n]. 
  • All except short head originate from ischial tuberosity. 
  • Separate muscle become distinguishable 5-10cm form tuberosity. 
  • Complete avulsions generaly occur at the ishial tuberosity.
  • Ischial apophysis is relatively weak in adolescences making ischail apophyseal avulsion fractures more common in adolescences.
  • Ischail apophyseal secondary ossification center appears in early puberty and does not fuse until late adolescences. (Gidwani S, BMJ 2004;329:99).

Pelvic Avulsion Fracture Clinical Evaluation

Pelvic Avulsion Fracture Xray / Diagnositc Tests

Pelvic Avulsion Fracture Classification / Treatment

Pelvic Avulsion Fracture Associated Injuries / Differential Diagnosis

Pelvic Avulsion Fracture Complications

Pelvic Avulsion Fracture Follow-up Care

Pelvic Avulsion Fracture Review References

  • Rossi F, Skeletal Radiology 2001;30:127




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