Anterior Cruciate Ligament Injuries Clinical Trial
Official title:
Spatiotemporal Characteristics and Multi-body Dynamics Modeling of Gait Touch Information After Anterior Cruciate Ligament Rupture and Reconstruction
High incidence rate of knee osteoarthritis and gait analysis are important for early
assessment of biomechanics. ACL injury is an ideal clinical model for studying knee
osteoarthritis.
To clarify the mechanism between the biomechanical status of knee joint and the change of
gait touch information, and to provide scientific basis for quantifying and evaluating the
biomechanical status of knee joint in dynamic load-bearing state.
Purpose: To clarify the relationship between the normal and abnormal biomechanical status of
the knee joint and the gait touch information, and to establish the biomechanical evaluation
model of the knee joint during walking or jogging, taking into account the comprehensive
effects of sports parameters, individual attribute parameters and other factors. An automatic
analysis and expert diagnosis system was established to evaluate the biomechanics of knee
joint.
Methods: 50 young male (23-35 years old) healthy volunteers and 100 patients with unilateral
simple ACL rupture who need surgical treatment were recruited, 150 subjects in total. Three
tests were performed before surgery, at the end of the 24th and 48th weeks after surgery. All
were tested with three-dimensional gait analysis, dynamic plantar pressure measurement and
isokinetic muscle strength during walking, jogging, emergency stop and take-off, side cut.
Outcome evaluation indicators and statistical methods: Two-way ANOVA method of repeated
measurement was used, the left and right sides and different rehabilitation time were used as
the variables of repeated measurement: the biomechanics of the lower limb joint and the
change of the biological characteristics of the gait touch information were analyzed. Three
dimensional gait analysis and computer-aided analysis of gait touch information were used to
study the changes of ACL rupture and reconstruction. Based on the information of gait touch,
taking into account the comprehensive effects of sports parameters, individual attribute
parameters and other factors, a biomechanical evaluation model of knee joint during walking
or jogging is established, which provides the exact basis for quantifying the information of
gait touch and evaluating the biomechanical state of knee joint after ACL rupture and
reconstruction under dynamic load-bearing state, and establishes a clinical practical
automatic analysis and expert diagnosis system of gait touch information to evaluate the
biomechanics of the knee joint.
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