title: Dislocation of the fibular head in an unusual sports injury: a case report.
abstract: BACKGROUND
  One of the primary functions of the proximal tibiofibular joint is slight rotation to accommodate rotational stress at the ankle. Proximal tibiofibular joint dislocation is a rare injury and accounts for less than 1% of all knee injuries. This dislocation has been reported in patients who had been engaged in football, ballet dancing, equestrian jumping, parachuting and snowboarding.
  
  
  METHODS
  A 20-year-old man was injured whilst playing football. He felt a pop in the right knee and was subsequently unable to bear weight on it. The range of movement in his knee joint was limited. Anterior-posterior and lateral X-rays of the knee revealed anterolateral dislocation of the proximal tibiofibular joint. Comparison views confirmed the anterolateral dislocation. He had a failed manipulation under anaesthesia and the joint needed an open reduction in which the fibular head was levered back into place. Operative findings revealed a horizontal type of joint.
  
  
  CONCLUSIONS
  An exceedingly rare dislocation of a horizontal type of proximal tibiofibular joint was presented following a football injury. This dislocation was irreducible by a closed method.
authors.affiliation: Department of Orthopaedics, Weston General Hospital, Grange Road, Uphill, UK. riazkanth@yahoo.co.uk
authors.forename: Riaz
authors.initials: R
authors.lastname: Ahmad
authors.forename: Ruth
authors.initials: R
authors.lastname: Case