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Validity of GNRB arthrometer Compared To Telos in the assessment of partial anterior cruciate ligament tears

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Validity of GNRB arthrometer Compared To Telos in the assessment of partial anterior cruciate ligament tears


The main goal of this study Was to compare the results of the GNRB Ò arthrometer To Those of Telos TMin the diagnosis of partial thickness tears of the anterior cru- ciate ligament (ACL).

Methods A prospective study Performed January- December 2011 included all patients presenting with a partial or full-thickness tears ACL without ACL recon- struction and with a healthy contralateral knee. Anterior laxity Was Measured in all patients by the Telos TM and GNRB Ò devices. This series included 139 patients, mean age 30.7 ±9.3 years. Arthroscopic reconstruction Was Performed in 109 patients, 97 for full tears and 12 single bundle reconstructions for partial thickness tears. Conservative treatment Was Proposed in 30 patients with a partial thickness tear. The correlation entre les two devices Was Evaluated by the Spearman coefficient. The optimal laxity Thresholds Were Determined with ROC curves, and the diagnostic value of the tests Was Assessed by the area under the curve (AUC).

Results The differential laxities of full and partial thick- ness tears Were Significantly different with the two tests. The results of correlation entre les laxity measurement with the two devices was fair, with The Strongest correlation entre TelosTM 250 N and 250 N GNRB Ò (r = 0.46, p = 0.00001). Evaluation of the AUC Showed que la informative value of all tests was fair with the best results with the GNRB Ò250 N: AUC = 0.89 [95% CI 0.83-0.94]. The optimal differential laxity threshold with theGNRB Ò Nwas2.5 250 mm (Se = 84%, Sp = 81%). Conclusion The diagnostic value of Ò GNRBTelos was better than TM for partial thickness tears ACL.

Level of evidence Diagnostic study, Level II. Keywords Anterior cruciate ligament GNRB Ò

Doctor Nicolas LEFEVRE, Doctor Yoann BOHU, Doctor Shahnaz KLOUCHE , Doctor Serge HERMAN. - 29 mars 2014.

Conflicts of interest: the author or authors have no conflicts of interest concerning the data published in this article.


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