Patellofemoral Syndrome

StudyTitlePurposeMethodsGold standardResultsAccuracy
Dejour, 1994Factors of patellar instability: an anatomic radiographic studyCompared radiographs and CT of patients with objectibe patellar instability and normal controls143  sxs, 190 controls“clinical dx”Trochlear depth: normal 7.8; PI = 2.3Accuracy not reported, unclear who did measurements
Pfirrman, 2000Femoral Trochlear Dysplasia: MR FindingsTo establish MRI criteria for dx of trochlear dysplasia16 knees with trochlear dysplasia, 23 nl kneesPresence of trochlear dysplasia on radiographs by consensus of two authorsTrochlear depth of < 3mm 100% sensitivity, and 96% specificityAccuracy not possible – single person measurements
Remy, 1998Reproducibility of the radiographic analysis of dysplasia of the femoral trochlea. Intra- and interobserver analysis of 68 knees.To establish intra and inter  reliability for Dejour’s radiographic criteria68 knees, 7 observers, intra 2 juniors Trochleoplasty was performedMean depth 1 mm (0-11 mm), ICC 0.38; Mean trochlear prominence 3mm (-6-10mm), ICC 0.625 observers rated 1-6/68 as normal, 6 observers agreed on the same shape in 12/68 trochleas.
Lippacher, 2012Observer Agreement on the Dejour Trochlear Dysplasia ClassificationTo assess intraobservor and interobserver agreements on radiographs and MRI50 sxs knees, 4 observors, 2 readings“clinic referral”Radiographs: Intra 30-78%, Inter 36%-52%; MR 32-74%; Inter 42-68%; changed to A vs BCD grades and got MRI inter 62%-96%