Pelvic injuries: iliac spine avulsion (ASIS)
Anterior superior iliac spine (ASIS) avulsion fracture
Clinical features
Aetiology
ASIS site of attachment for:
Management
Mechanism
- Forceful muscular contraction during sport
- Typically seen in young athletes, avulsion through physis
Clinical features
- Patient may hear pop or snap at time of injury
- Weakness of hip flexion
- Limp
Aetiology
ASIS site of attachment for:
- sartorius (sartorius is usual culprit that avulses ASIS through the physis)
- tensor fascia latae
Management
- Conservative typically: crutches, analgesics, and modified activity
- Recovery time usually 4-6 weeks.
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