Clinical trial NCT05254054: The Effect of Whole Body Vibration After ACLR
Official title: The Effect of Whole Body Vibration on Dynamic Knee Stability in Patients After Anterior Cruciate Ligament Reconstruction
Study type: INTERVENTIONAL
Overall status: RECRUITING
Phase: NA
Conditions: ACL Injury
Keywords: ACL
dynamic knee stability
whole body vibration
Lead sponsor: Chinese University of Hong Kong
Sponsor class: OTHER
First posted: 2022-02-24
Enrollment: 50
Sex: ALL
Minimum age (years): 18
Maximum age (years): 50
Standard ages: ADULT
Accepts healthy volunteers: no
Allocation: RANDOMIZED
Intervention model: PARALLEL
Intervention model description: This is a randomized control trial. Participants will be randomly allocated into either intervention group(vibration training+ conventional rehabilitation program) or control group(conventional rehabilitation program).
Primary purpose: SUPPORTIVE_CARE

Brief summary: This is a randomised clinical trial to detect the effect of an 8-week whole body vibration training on muscle function and dynamic knee function during single leg squat and single leg hop in patients after anterior cruciate ligament reconstruction

Detailed description: In Hong Kong, over 3000 cases of ACL reconstruction are operated annually to restore knee stability. Despite recovery of knee passive laxity and muscle strength, dynamic knee stability is often not restored. The whole body vibration has been found to improve muscle strength, proprioception and balance after ACL reconstruction. This project will investigate the effect of whole body vibration on muscle elasticity, muscle coordination and landing knee biomechanics. It may provide useful evidence to the application of whole body vibration in improving dynamic knee stability, which will lead to a significant improvement in healthcare management for ACL patients . The current study serves to provide a clinical guideline for post-ACL reconstruction rehabilitation.

Eligibility criteria: Inclusion Criteria:

1. Aged 18-50;
2. Physically active before injury with Tegner score more than 6 (recreational/professional sport level);
3. Scheduled for ACLR because of sport injury;
4. Be able to walk with a pair of elbow crutches independently at 1 month after ACLR.

Exclusion Criteria:

1. Concomitant posterior cruciate ligament or lateral collateral ligament injury in the same knee;
2. Injury to the contralateral side;
3. Medical problems that are contradictory to WBV;
4. Prior experience of WBV to avoid any training or memory effect;
5. Women with pregnancy.

Primary outcomes:
measure: knee flexion angle
timeFrame: immediately after intervention, three month after intervention
measure: knee valgus angle
timeFrame: immediately after intervention, three month after intervention
measure: knee internal rotation angle
timeFrame: immediately after intervention, three month after intervention
measure: Vertical ground reaction force
timeFrame: immediately after intervention, three month after intervention
measure: Knee valgus torque
timeFrame: immediately after intervention, three month after intervention
measure: Knee extension torque
timeFrame: immediately after intervention, three month after intervention
Secondary outcomes:
measure: muscle strength
timeFrame: immediately after intervention, three month after intervention
measure: muscle elasticity
timeFrame: immediately after intervention, three month after intervention
measure: muscle activation
timeFrame: immediately after intervention, three month after intervention
Other outcomes:
Locations:
city: Hong Kong
country: Hong Kong
facility: The chinese University of Hong Kong
Study officials:
affiliation: Chinese University of Hong Kong
name: Xin He, PhD
role: PRINCIPAL_INVESTIGATOR
References: