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Medientyp:
E-Artikel
Titel:
Phase-Specific Ground Reaction Force Analyses of Bilateral and Unilateral Jumps in Patients With ACL Reconstruction
Beteiligte:
Baumgart, Christian;
Hoppe, Matthias W.;
Freiwald, Jürgen
Erschienen:
SAGE Publications, 2017
Erschienen in:Orthopaedic Journal of Sports Medicine
Sprache:
Englisch
DOI:
10.1177/2325967117710912
ISSN:
2325-9671
Entstehung:
Anmerkungen:
Beschreibung:
<jats:sec><jats:title>Background:</jats:title><jats:p> In patients who have undergone anterior cruciate ligament (ACL) reconstruction, there is a weak correlation between subjective evaluation of knee function on questionnaires and clinical or biomechanical test results. </jats:p></jats:sec><jats:sec><jats:title>Hypothesis:</jats:title><jats:p> Patients with lower subjective knee function will demonstrate lower ground-reaction forces (GRFs) in the operated leg and greater GRF asymmetries in both phase-specific and functional data analysis (FDA) approaches compared with patients with higher subjective knee function. </jats:p></jats:sec><jats:sec><jats:title>Study Design:</jats:title><jats:p> Descriptive laboratory study. </jats:p></jats:sec><jats:sec><jats:title>Methods:</jats:title><jats:p> The GRFs of the operated and nonoperated legs of 40 patients who previously underwent ACL reconstruction (patellar tendon) were analyzed during unilateral and bilateral countermovement jumps at a mean 2.5 years after surgery. The patients were separated into 2 groups depending on their International Knee Documentation Committee (IKDC) Subjective Form score: low IKDC and high IKDC. </jats:p></jats:sec><jats:sec><jats:title>Results:</jats:title><jats:p> Both phase-specific and FDA approaches showed lower GRF values in the operated compared with the nonoperated leg within the low-IKDC group during bilateral jumps. Moreover, lower GRF values were also present in the operated and nonoperated legs in the low-IKDC group compared with those of the high-IKDC group. Differences in GRFs were predominantly observed during the eccentric deceleration phase of jumping. </jats:p></jats:sec><jats:sec><jats:title>Conclusion:</jats:title><jats:p> Patients with previous ACL reconstruction who have limited subjective knee function have lower GRF values and greater GRF asymmetries, suggesting the use of interlimb compensation strategies. </jats:p></jats:sec><jats:sec><jats:title>Clinical Relevance:</jats:title><jats:p> The study results lead to a better understanding of the motor control needed during the eccentric and concentric movement phases of unilateral and bilateral jumps in patients who have undergone ACL reconstruction. </jats:p></jats:sec>