ASIS Avulsion

synonyms: anterior superior iliac spine avulsion

ASIS Avulsion ICD-9

ASIS Avulsion Etiology / Epidemiology / Natural History

• Caused by sudden, forceful contraction of the sartorius and tensor fascia lata usually with the hip extended and knee flexed.
• Generally adolescent athletes: baseball, sprinting.

ASIS Avulsion Anatomy

ASIS Avulsion Clinical Evaluation

• C/o pain over the ASIS. Generally noted snap or pop at time of injury.

ASIS Avulsion Xray / Diagnositc Tests

• A/P pelvis generally demonstrates displaced fractures.
• Consider MRI/CT is diagnosis is suspected, but not evident on plain films.

ASIS Avulsion Classification / Treatment

• Nondisplaced (<2cm displacement): rest and protected weight bearing;
• Displaced (>3cm displacement): surgical repair.
• ASIS nonunion: surgical repair.

ASIS Avulsion Associated Injuries / Differential Diagnosis

ASIS Avulsion Complications

ASIS Avulsion Follow-up Care

ASIS Avulsion Review References

• White KK, JPO 2002;22:578