Warwick AgreementBritish journal of sports medicine 2016
The Warwick Agreement on femoroacetabular impingement syndrome (FAI syndrome): an international consensus statement.
Defined FAI syndrome as a motion-related clinical disorder requiring a triad of symptoms, clinical signs and imaging findings (cam or pincer morphology); morphology alone without symptoms is not FAI syndrome.
GuidelineDiagnosisHip (young adult & sports)
Clohisy young adult hip radiographsThe Journal of bone and joint surgery. American volume 2008
A systematic approach to the plain radiographic evaluation of the young adult hip.
Recommended a well-centred AP pelvis plus lateral views (e.g. cross-table lateral, frog-leg, Dunn) and set out key measures such as lateral centre-edge angle, Tonnis angle, crossover sign and head-neck offset.
OtherDiagnosisHip (young adult & sports)
Ganz FAI conceptClinical orthopaedics and related research 2003
Femoroacetabular impingement: a cause for osteoarthritis of the hip.
Described cam (aspherical femoral head-neck junction) and pincer (acetabular over-coverage) impingement and their characteristic patterns of labral and cartilage damage, proposing FAI as a cause of early osteoarthritis.
OtherDiagnosisHip (young adult & sports)
Alpha angle (Notzli)The Journal of bone and joint surgery. British volume 2002
The contour of the femoral head-neck junction as a predictor for the risk of anterior impingement.
Symptomatic patients had significantly larger alpha angles than controls, establishing the alpha angle as a measure of cam morphology.
Cohort studyDiagnosisHip (young adult & sports)
Steinberg (University of Pennsylvania) stagingThe Journal of bone and joint surgery. British volume 1995
A quantitative system for staging avascular necrosis.
Extended Ficat-type staging by incorporating MRI findings and quantifying the extent of head involvement, which helps predict progression and guide treatment.
OtherDiagnosisHip (young adult & sports)