The following pelvic x-ray is from a 15 year old male. He was running when he heard a ‘pop’ sound and collapsed onto the ground, following which he noted pain around the right groin and down to the knee. What can you note in the x-ray?[peekaboo_link name=”Answer”]Answer[/peekaboo_link] [peekaboo_content name=”Answer”]
The pelvic x-ray shows right ASIS (anterior superior iliac spine) avulsion fracture. There is a triangular bony density adjacent to the anterior superior iliac spine on the right. This is indicative of avulsion at the attachment of the sartorius muscle.
This patient was managed conservatively.
- Commonly involves young athletes.
- Occurs due to sudden forceful contraction of the sartorius and the tensor fascia lata.
- Patient will often report a ‘pop’ at the time of injury.
- Most cases managed conservatively with rest, crutches, analgesia and early weight bearing.
- Operative indications: fractures with >3mm displacement and painful non-unions.