title: Stress radiography and posterior pathological laxity of knee: comparison between two different techniques.
abstract: Stress radiographs have been recommended in order to obtain a better objective quantification of abnormal compartment knee motion. This tool has showed to be superior in quantifying a posterior cruciate ligament (PCL) lesion compared to clinical or arthrometer evaluation. Different radiographic techniques have been described in literature to quantify posterior pathological laxity. In this study we evaluated the total amount of posterior displacement (PTD) and side to side difference (SSD), before and after surgical reconstruction of PCL or PCL and posterolateral complex (PLC), using two different stress radiography techniques (Telos stress and kneeling view). Twenty patients were included in this study. We found a statistical significant difference about both total PTD and SSD among the two techniques preoperatively and at follow-up, with greatest values occurring using the kneeling view. Although stress radiographies has been introduced to allow an objective quantification of laxity in ligamentous injured knee, we believe that further studies on a large numbers of subjects are required to define the relationship between PTD values, measured with stress knee radiography, particularly using kneeling view, and ligamentous knee injury, in order to obtain a real useful tool in the decision making process, as well as to evaluate the outcome after ligamentous surgery.
authors.affiliation: Orthopaedic and Traumatology Unit, F. Miulli Hospital, Acquaviva delle fonti, Bari, Italy. raffaelegarofalo@gmail.com
authors.forename: Raffaele
authors.initials: R
authors.lastname: Garofalo
authors.forename: Gregory C
authors.initials: GC
authors.lastname: Fanelli
authors.forename: Alec
authors.initials: A
authors.lastname: Cikes
authors.forename: Daniel
authors.initials: D
authors.lastname: N'Dele
authors.forename: Cyril
authors.initials: C
authors.lastname: Kombot
authors.forename: Pier Paolo
authors.initials: PP
authors.lastname: Mariani
authors.forename: Elyazid
authors.initials: E
authors.lastname: Mouhsine
mesh_terms: D000293:Adolescent; D000328:Adult; D053587:Arthrometry, Articular; D005260:Female; D006801:Humans; D007090:Image Interpretation, Computer-Assisted / Q000379:methods*; D007593:Joint Instability / Q000000981:diagnostic imaging*; D007719:Knee Joint / Q000000981:diagnostic imaging* / Q000502:physiology; D008297:Male; D016119:Posterior Cruciate Ligament / Q000000981:diagnostic imaging* / Q000293:injuries / Q000601:surgery; D011187:Posture; D011859:Radiography; D012720:Severity of Illness Index; D016474:Weight-Bearing; D055815:Young Adult