Arthroscopic treatment for traumatic hip dislocation with avulsion fracture of the ligamentum teres.

Traumatic hip dislocation in children is a rare condition. Immediate closed reduction is a treatment of choice, but when incongruent reduction results, it can be due to interposition and requires open arthrotomy. We present a previously unreported technique of arthroscopic treatment that was used successfully for traumatic hip dislocation in a 10-year-old girl with impingement of the avulsed ligamentum teres. Arthroscopy was effective in confirming the exact nature of the interposition material and excising the fragment with minimal invasion.