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The Influences of Chronicity and Meniscal Injuries on Pivot Shift in Anterior Cruciate Ligament-Deficient Knees: Quantitative Evaluation Using an Electromagnetic Measurement System.
- Source :
-
Arthroscopy : the journal of arthroscopic & related surgery : official publication of the Arthroscopy Association of North America and the International Arthroscopy Association [Arthroscopy] 2020 May; Vol. 36 (5), pp. 1398-1406. Date of Electronic Publication: 2020 Jan 28. - Publication Year :
- 2020
-
Abstract
- Purpose: To investigate the influences of time from injury to surgery and meniscal injuries on knee rotational laxity in anterior cruciate ligament (ACL)-deficient knees using the electromagnetic system retrospectively.<br />Methods: Ninety-four unilateral ACL-injured patients (44 male and 50 female, mean age: 27.3 ± 11.8 years) were included. The pivot-shift test was performed before ACL reconstruction, as was a quantitative evaluation using the electromagnetic system to determine tibial acceleration. Patients were divided into 4 groups according to the chronicity: group 1, within 3 months (22 patients); group 2, between 3 and 6 months (29 patients); group 3, between 6 and 12 months (23 patients); and group 4, more than 12 months (20 patients). The presence of meniscal injuries was examined arthroscopically.<br />Results: The tibial acceleration was significantly greater in group 4. There was a positive correlation between tibial acceleration and the time from injury to surgery (r = 0.47, P = .02). In groups 1, 2 and 3, the tibial acceleration in patients with a lateral meniscal injury was significantly greater than in patients with a medial meniscal injury and without meniscal injury. When patients with lateral meniscal injury were excluded (leaving those with medial meniscus injury or without meniscal injury), group 4 had significantly greater accelerations than other groups.<br />Conclusions: In ACL-deficient knees, rotational laxity increased with time and the increased rotational laxity was evident more than 1 year after injury whereas it increased with concomitant lateral meniscal injuries within 1 year after injury.<br />Level of Evidence: Ⅳ, diagnostic study of nonconsecutive patients.<br /> (Copyright © 2020 Arthroscopy Association of North America. Published by Elsevier Inc. All rights reserved.)
- Subjects :
- Adolescent
Adult
Anterior Cruciate Ligament Injuries complications
Anterior Cruciate Ligament Injuries physiopathology
Anterior Cruciate Ligament Reconstruction
Electromagnetic Phenomena
Female
Humans
Joint Instability etiology
Joint Instability physiopathology
Knee Joint surgery
Male
Menisci, Tibial surgery
Middle Aged
Retrospective Studies
Tibial Meniscus Injuries complications
Tibial Meniscus Injuries physiopathology
Young Adult
Anterior Cruciate Ligament surgery
Anterior Cruciate Ligament Injuries surgery
Cartilage, Articular surgery
Joint Instability surgery
Knee Joint physiopathology
Tibial Meniscus Injuries surgery
Subjects
Details
- Language :
- English
- ISSN :
- 1526-3231
- Volume :
- 36
- Issue :
- 5
- Database :
- MEDLINE
- Journal :
- Arthroscopy : the journal of arthroscopic & related surgery : official publication of the Arthroscopy Association of North America and the International Arthroscopy Association
- Publication Type :
- Academic Journal
- Accession number :
- 32001277
- Full Text :
- https://doi.org/10.1016/j.arthro.2020.01.018