Laboratory Evaluation of the Pivot-Shift Phenomenon with Use of Kinetic Analysis

Sanchis-Alfonso, Vicente; Bertomeu, José María Baydal; Castelli, Andrea; Montesinos-Berry, Erik; Marín-Roca, Susana; Garrido-Jaén, J.D.

doi:10.2106/jbjs.j.00582

Cited by 4 publications

(3 citation statements)

References 25 publications

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“…On the other hand, pivoting-jump task, beyond the interval of significant difference, showed a tendency to an avoidance pattern during the whole stance phase. This finding is similar to that reported by Sanchis-Alfonso et al (15), who found an avoidance pattern in pivoting-jump tasks performed in external and internal rotation. These authors collected only kinetic data, and values of torque were calculated on the force plate surface itself, with the assumption that the knee lies over the point of application of the force, fact that was not proved.…”

Section: Discussionsupporting

confidence: 92%

“…All subjects performed two manoeuvres: a crossover task (19) and a pivoting-jump task (15). All tests were performed at the Human Performance Laboratory of our University.…”

Section: Methodsmentioning

confidence: 99%

“…The pivot-shift test has the highest specificity, but only moderate sensitivity and reliability, and is highly examiner dependent (14). The pivot shift test involves motion in more than one plane, but evaluations of rotational stability should be performed under weight bearing conditions, thus reflecting real life instability (15)(16)(17). Previous biomechanical studies focused on the kinematics and kinetics in the sagittal and coronal planes, but less on transverse plane kinetics (12).…”

Section: Abstract Anterior Cruciate Ligament Injury; Kinematics; Kinmentioning

confidence: 99%

See 2 more Smart Citations

Anterior cruciate ligament deficiency: rotational instability in the transverse plane. A preliminary laboratory in vivo study

Ferrer

Twycross-Lewis

Maffulli

2019

Muscle Ligaments and Tendons J

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Background. Rotational instability is a major feature of anterior cruciate ligament (ACL) deficiency. Few biomechanical studies have focused on the transverse plane when assessing the function of the ACL. Objective. To analyse the biomechanics of ACL deficient knees in the transverse plane under torsional conditions to detect rotational instability. Methods. Seven subjects (eight ACL deficiency) (ACLd group) and nine recreational athletes (controls) were recruited. Each performed two tasks: crossover and pivoting-jump. Biomechanical data were collected in a movement analysis laboratory. Comparisons were made for torque, rotation and torque curves in transverse plane between ACLd, contralateral knees and controls. Results. Torque curves showed and initial avoidance pattern followed by increased values in crossover task, and lesser values for ACLd group compared to controls in pivoting-jump task. Internal rotation in crossover was 19.8°, 13.7° and 19.1° for ACLd, contralateral and controls respectively (p = 0. 176). In pivoting-jump these values were 18.6°, 13.8° and 18.1° (p = 0.297). Crossover peak torque were 257, 178.4 and 184.8 Nmm for ACLd, contralateral and controls (p = 0.5), while pivoting-jump values were 238.4, 152.2 and 218 Nmm for ACLd, contralateral and controls (p = 0.288). Conclusion. Torque curve analysis identified a distinctive pattern differentiating ACLd and control group. However, no statistically significant differences were found in peak transverse plane parameters between groups.

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Section: Discussionsupporting

confidence: 92%

“…All subjects performed two manoeuvres: a crossover task (19) and a pivoting-jump task (15). All tests were performed at the Human Performance Laboratory of our University.…”

Section: Methodsmentioning

confidence: 99%