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  • Title: Triaxial accelerometer can quantify the Lachman test similarly to standard arthrometers.
    Author: Raggi F, Roberti di Sarsina T, Signorelli C, Marcheggiani Muccioli GM, Macchiarola L, Cucurnia I, Romagnoli M, Grassi A, Zaffagnini S.
    Journal: Knee Surg Sports Traumatol Arthrosc; 2019 Aug; 27(8):2698-2703. PubMed ID: 30474693.
    Abstract:
    PURPOSE: To assess the relationship between the KiRA triaxial accelerometer and the KT-1000 measurements in the intact, anterior cruciate ligament (ACL) deficient, and ACL reconstructed knee joint for the quantification of the Lachman test. Moreover, the intra- and inter-examiner repeatability of the KiRA device will be determined. It was hypothesized that the side-to-side difference of the anterior tibial translation as measured by the KiRA device would be equivalent to the one measured by the KT-1000 during the Lachman test. METHODS: Sixty patients were divided into three groups and have been prospectively included in the present study. Group_A composed of 20 patients with a diagnosis of an isolated ACL tear. Group_B composed of 20 patients who underwent ACL reconstruction with a Single-Bundle Lateral Plasty (SBLP) technique with at least 20 years of follow-up. Group_C was the control group and included 20 patients with no history of ACL lesion. Lachman test has been performed at manual-maximum load on both sides, the involved and the contralateral and analyzed with the two different devices. RESULTS: The KiRA device in terms of side-to-side difference resulted not statistically different from the measurement of the KT-1000 arthrometer for the three study groups (n.s): Group_A: (4 ± 2 mm KiRA, 4 ± 2 mm KT1000), Group_B: (4 ± 2 mm KiRA, 4 ± 2 mm KT-1000), Group_C: (4 ± 2 mm KiRA, 4 ± 2 mm KT-1000), an excellent intra- (ICC = 0.88-0.89) and inter-examiner (ICC = 0.79) agreement was found for KiRA measurements. CONCLUSION: The KiRA (I+, Italy) device offers a valid method to quantify the Lacham test. LEVEL OF EVIDENCE: II.
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