Optimizing Anterior Cruciate Ligament Replacement by using Numerical Musculoskeletal Model

Completed

Conditions: Healthy subjects
We study healthy subjects

Registration Number: NL-OMON36009

Lead Sponsor: niversitair Medisch Centrum Groningen

Brief Summary: Not available

Detailed Description: Not available

Recruitment & Eligibility

Status: Completed

Sex: Not specified

Target Recruitment: 10

Inclusion Criteria

The healthy subjects should be able to do the walking hopping task without any help or trouble. Age range should be between 18- 55 years.

Exclusion Criteria

Subject is not eligible if she/he meets one or more of the following criteria: ;(a) Claustrophobic subject will be erased from the list (for MRI scanning)
(b) Current pain in the knee or other lower limb parts that can cause abnormal walking, hopping and side jumping.
(c) Past lower limb trauma that has caused current imbalance in walking and hopping
(d) Current neurological and metabolic disorders that have effect on lower limb function (diagnosed by sports physician)
(e) Current inflammatory arthritis of foot, ankle, knee, hip and back (diagnosed by sports physician)
(f) Lack of normal lower extremity function that interferes with normal walking, hopping and side jumping (diagnosed by sports physician)

Study & Design

Study Type: Observational non invasive

Study Design: Not specified

Primary Outcome Measures

Name	Time	Method
<p>From MRI measurement:<br /><br>a. The length and the elongation of all 4 ligaments during several flexion<br /><br>position and maximal tibial rotation while the knee is in 90o flexion<br /><br>b. The contact points of both femoral condyles and tibia plateau<br /><br>c. The attachment position of every ligament (origin and insertion)<br /><br>d. The geometric data of the knee bone, such as the widht of femoral condyle,<br /><br>tibia plateau, varus valgus knee angle, the orientation of contact point<br /><br>between articular cartilage and meniscus.<br /><br><br /><br>From Vicon measurement:<br /><br>a. Kinematics of relevant body segments<br /><br>b. EMG analog data of muscle activity, onset and off set of muscle activity and<br /><br>muscle activity pattern.</p><br>

Secondary Outcome Measures

Name	Time	Method
<p>From MRI measurement:<br /><br>a. The relationship of the length of ACL, PCL, MCL and LCL in different angle<br /><br>position during flexion and maximal tibia rotation at 90o knee flexion</p><br>