{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,10,28]],"date-time":"2026-10-28T12:40:30Z","timestamp":1793191230414,"version":"4.5.0"},"reference-count":36,"publisher":"Wiley","issue":"3","license":[{"start":{"date-parts":[[2005,8,17]],"date-time":"2005-08-17T00:00:00Z","timestamp":1124236800000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/onlinelibrary.wiley.com\/termsAndConditions#vor"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Knee surg. sports traumatol. arthrosc."],"published-print":{"date-parts":[[2006,3]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:p>To evaluate and compare the diagnostic utility of multiple quantitative parameters as measured on knee magnetic resonance (MR) examinations of patients suffering objective patellar instability (OPI). We performed a retrospective evaluation of knee MR examinations in a group of 46 patients (59\u00a0knees) with clinically proven OPI, and in a control group of 69 patients (71\u00a0knees). Multiple quantitative parameters in both groups were statistically evaluated and compared for their association with OPI. OPI patients tend to present shallower trochlear groove (&lt;5\u00a0mm), larger Insall\u2010Salvati index (&gt;1.2), shorter patellar nose (&lt;9\u00a0mm), smaller morphology ratio (&lt;1.2), and larger patellar tilt (&gt;11\u00b0) than control patients. The best sensitivities were those of the lateral patellar tilt (92.7%), the trochlear groove depth at the roman arch level (85.7%) and the Insall\u2010Salvati index (78%). The best specificities were those of the morphology ratio (86.9%), the patellar nose (84.5%) and the patellar tendon length (84.5%). Shallow trochlear groove may be confidently identified at the roman arch view in OPI patients. Patella alta may be more reliably detected by the Insall\u2010Salvati index in OPI patients. Patellar nose and morphology ratio are very specific indicators of OPI. A short patellar nose (that is to say, a patellar nose ratio of &lt;0.25) has a high association with OPI. Lateral patellar tilt remains the single feature with the highest sensitivity and specificity for identifying OPI patients.<\/jats:p>","DOI":"10.1007\/s00167-005-0668-z","type":"journal-article","created":{"date-parts":[[2005,8,16]],"date-time":"2005-08-16T12:35:34Z","timestamp":1124195734000},"page":"264-272","source":"Crossref","is-referenced-by-count":105,"title":["Objective patellar instability: MR\u2010based quantitative assessment of potentially associated anatomical features"],"prefix":"10.1002","volume":"14","author":[{"given":"Joan S.","family":"Escala","sequence":"first","affiliation":[{"name":"Servei de Cirurgia Ortop\u00e8dica i Traumatologia Hospital Universitari de Tarragona Joan XXIII Carrer Doctor Mallafr\u00e8 Guasch, 4 43007 Tarragona Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jos\u00e9 M.","family":"Mellado","sequence":"additional","affiliation":[{"name":"Institut de Diagn\u00f2stic per la Imatge Hospital Universitari de Tarragona Joan XXIII Tarragona Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Montserrat","family":"Olona","sequence":"additional","affiliation":[{"name":"Servei de Medicina Preventiva Hospital Universitari de Tarragona Joan XXIII Tarragona Spain"},{"name":"Universitat Rovira i Virgili Tarragona Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Josep","family":"Gin\u00e9","sequence":"additional","affiliation":[{"name":"Servei de Cirurgia Ortop\u00e8dica i Traumatologia Hospital Universitari de Tarragona Joan XXIII Carrer Doctor Mallafr\u00e8 Guasch, 4 43007 Tarragona Spain"},{"name":"Universitat Rovira i Virgili Tarragona Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Amadeu","family":"Saur\u00ed","sequence":"additional","affiliation":[{"name":"Institut de Diagn\u00f2stic per la Imatge Hospital Universitari de Tarragona Joan XXIII Tarragona Spain"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Phillipe","family":"Neyret","sequence":"additional","affiliation":[{"name":"Service de Chirurgie Ortop\u00e9dique H\u00f4pital de la Croix\u2010Rousse Centre Livet Caluire France"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"311","published-online":{"date-parts":[[2005,8,17]]},"reference":[{"key":"e_1_2_6_2_1","first-page":"257","article-title":"The bone graft wedge in the treatment of habitual dislocation of the patella","volume":"88","author":"Albee FH","year":"1915","journal-title":"Med Rec"},{"key":"e_1_2_6_3_1","doi-asserted-by":"publisher","DOI":"10.1148\/radiology.216.2.r00au07582"},{"key":"e_1_2_6_4_1","first-page":"385","article-title":"Method of measuring the height of the patella","volume":"55","author":"Caton J","year":"1989","journal-title":"Acta Orthop Belg"},{"key":"e_1_2_6_5_1","doi-asserted-by":"publisher","DOI":"10.1302\/0301\u2010620X.82B8.10833"},{"key":"e_1_2_6_6_1","first-page":"45","article-title":"Dysplasia of the femoral trochlea","volume":"76","author":"Dejour H","year":"1990","journal-title":"Rev Chir Orthop Reparatrice Appar Mot"},{"key":"e_1_2_6_7_1","doi-asserted-by":"publisher","DOI":"10.1007\/BF01552649"},{"key":"e_1_2_6_8_1","doi-asserted-by":"publisher","DOI":"10.1148\/radiol.2253011578"},{"key":"e_1_2_6_9_1","doi-asserted-by":"publisher","DOI":"10.1016\/S0749-8063(87)80005-1"},{"key":"e_1_2_6_10_1","first-page":"423","article-title":"The meaurement of the tibial tuberosity. 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