Avulsion injury of the pelvis
These injuries occur most commonly in athletes and sportsmen. Violent muscle contraction causes the avulsion of a piece of pelvis. The most common sites are:
- Anterior superior iliac spine - sartorius
- Anterior inferior iliac spine - rectus femoris
- Pubis - adductor longus
- Ischium - hamstrings
Presentation is typically with tenderness at the site of avulsion and pain to resisted action of the affected muscle. Avulsion is often seen at the site on X-ray.
The only treatment required is a few days rest (which is not an easy pill to swallow for a dedicated sportsman) and reassurance.
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