Phase-Specific Ground Reaction Force Analyses of Bilateral and Unilateral Jumps in Patients With ACL Reconstruction

被引:34
作者
Baumgart, Christian [1 ,2 ]
Hoppe, Matthias W. [1 ,2 ]
Freiwald, Juergen [1 ,2 ]
机构
[1] Univ Wuppertal, Wuppertal, Germany
[2] Univ Wuppertal, Dept Movement & Training Sci, Fuhlrottstr 10, D-42119 Wuppertal, Germany
关键词
functional data analysis; asymmetry; eccentric; concentric; FUNCTIONAL DATA-ANALYSIS; CRUCIATE LIGAMENT RECONSTRUCTION; QUADRICEPS STRENGTH; VERTICAL JUMP; ANTERIOR; INJURY; PERFORMANCE; ASYMMETRY; RETURN; REHABILITATION;
D O I
10.1177/2325967117710912
中图分类号
R826.8 [整形外科学]; R782.2 [口腔颌面部整形外科学]; R726.2 [小儿整形外科学]; R62 [整形外科学(修复外科学)];
学科分类号
摘要
Background: 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. Hypothesis: 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. Study Design: Descriptive laboratory study. Methods: 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. Results: 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. Conclusion: 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. Clinical Relevance: 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.
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页数:9
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