caa a22 4500 60545888X CHVBK 20210128100231.0 cr unu---uuuuu 210128e20150401xx s 000 0 eng 10.1007/s00167-014-2901-0 doi (NATIONALLICENCE)springer-10.1007/s00167-014-2901-0 Rolimeter measurements are suitable as substitutes to stress radiographs in the evaluation of posterior knee laxity [Elektronische Daten] [Jürgen Höher, Ralph Akoto, Philip Helm, Sven Shafizadeh, Bertil Bouillon, Maurice Balke] Purpose: The quantification of posterior knee laxity is crucial in the evaluation of injuries to the posterior cruciate ligament (PCL) as it has important implications to the treatment for these injuries. The objective of this study was to compare the test results of stress radiography and instrumented drawer testing (Rolimeter) for the assessment of posterior knee laxity in patients with PCL injury. Methods: In 45 patients with an injury to the PCL, lateral radiographs of both knees were obtained under anterior and posterior tibial load (150N) using a standardized approach. Patients with injury of the ACL to either knee were excluded from the study. During the same clinic visit, an instrumented measurement of anterior-posterior knee laxity was performed at 90° of knee flexion by an experienced examiner using the Rolimeter device. The mean side-to-side differences (SSD) of both (radiographic and instrumented) measurements were compared to each other, and the correlation was calculated using the Pearson coefficient. Results: The SSD (affected/healthy side) of posterior translation determined from the radiographs was 8.2±3.2mm, and the SSD of the instrumented measurement testing was 7.6±3.2mm. The mean difference between radiographic and Rolimeter test results was 1.8±1.5mm. The Pearson's correlation coefficient revealed a good correlation between both measurements of 0.74. Conclusions: It may be suggested by the results of this study that under the absence of an ACL injury and a fixed posterior drawer sign, the Rolimeter is a suitable tool to assess the posterior laxity of the knee in the clinical setting. Its advantages are the absence of radiation to the patient, its availability, and the low cost. Therefore, the Rolimeter device may serve as a valuable alternative to stress radiography in the evaluation of PCL-injured patients. Level of evidence: II. Springer-Verlag Berlin Heidelberg, 2014 Instrumented knee laxity measurement nationallicence Posterior cruciate ligament nationallicence Stress radiography nationallicence Höher Jürgen Department of Trauma and Orthopaedic Surgery, Clinic for Sports Traumatology, Cologne-Merheim Medical Center, University of Witten-Herdecke, Ostmerheimer Str. 200, 51109, Cologne, Germany aut Akoto Ralph Department of Trauma and Orthopaedic Surgery, Cologne-Merheim Medical Center, University of Witten-Herdecke, Ostmerheimer Str. 200, 51109, Cologne, Germany aut Helm Philip Department of Trauma and Orthopaedic Surgery, Cologne-Merheim Medical Center, University of Witten-Herdecke, Ostmerheimer Str. 200, 51109, Cologne, Germany aut Shafizadeh Sven Department of Trauma and Orthopaedic Surgery, Cologne-Merheim Medical Center, University of Witten-Herdecke, Ostmerheimer Str. 200, 51109, Cologne, Germany aut Bouillon Bertil Department of Trauma and Orthopaedic Surgery, Cologne-Merheim Medical Center, University of Witten-Herdecke, Ostmerheimer Str. 200, 51109, Cologne, Germany aut Balke Maurice Department of Trauma and Orthopaedic Surgery, Cologne-Merheim Medical Center, University of Witten-Herdecke, Ostmerheimer Str. 200, 51109, Cologne, Germany aut Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/4(2015-04-01), 1107-1112 0942-2056 23:4<1107 2015 23 167 https://doi.org/10.1007/s00167-014-2901-0 text/html Onlinezugriff via DOI BK010053 XK010053 XK010000 Metadata rights reserved Springer special CC-BY-NC licence nationallicence 1 research-article jats NATIONALLICENCE NATIONALLICENCE NL-springer NATIONALLICENCE 856 40 https://doi.org/10.1007/s00167-014-2901-0 text/html Onlinezugriff via DOI NATIONALLICENCE 700 1- Höher Jürgen Department of Trauma and Orthopaedic Surgery, Clinic for Sports Traumatology, Cologne-Merheim Medical Center, University of Witten-Herdecke, Ostmerheimer Str. 200, 51109, Cologne, Germany aut NATIONALLICENCE 700 1- Akoto Ralph Department of Trauma and Orthopaedic Surgery, Cologne-Merheim Medical Center, University of Witten-Herdecke, Ostmerheimer Str. 200, 51109, Cologne, Germany aut NATIONALLICENCE 700 1- Helm Philip Department of Trauma and Orthopaedic Surgery, Cologne-Merheim Medical Center, University of Witten-Herdecke, Ostmerheimer Str. 200, 51109, Cologne, Germany aut NATIONALLICENCE 700 1- Shafizadeh Sven Department of Trauma and Orthopaedic Surgery, Cologne-Merheim Medical Center, University of Witten-Herdecke, Ostmerheimer Str. 200, 51109, Cologne, Germany aut NATIONALLICENCE 700 1- Bouillon Bertil Department of Trauma and Orthopaedic Surgery, Cologne-Merheim Medical Center, University of Witten-Herdecke, Ostmerheimer Str. 200, 51109, Cologne, Germany aut NATIONALLICENCE 700 1- Balke Maurice Department of Trauma and Orthopaedic Surgery, Cologne-Merheim Medical Center, University of Witten-Herdecke, Ostmerheimer Str. 200, 51109, Cologne, Germany aut NATIONALLICENCE 773 0- Knee Surgery, Sports Traumatology, Arthroscopy Springer Berlin Heidelberg 23/4(2015-04-01), 1107-1112 0942-2056 23:4<1107 2015 23 167