Dynamic Imaging of the Hip for Pre-operative Planning

Not Applicable

Completed

• Conditions: Femoroacetabular, Impingement
• Interventions: Procedure: Motion analysis; Diagnostic Test: Computed Tomography

• Registration Number: NCT00605969
• Lead Sponsor: Ottawa Hospital Research Institute

Brief Summary

One of the leading causes of hip arthritis is femoro-acetabular impingement which means the hip joint is deformed such that the hip joint jams in the front when the hip is bent all the way forward. This can lead to significant damage to the hip joint and may result in the need for a total hip replacement. However, if detected early, this deformity can be treated surgically by reshaping the hip joint. If the hip joint could be better visualized before surgery, then surgeons would be able to develop less invasive surgical techniques to correct this deformity.

Detailed Description

In this study, we are trying to develop a way to help surgeons visualize the hip joint before surgery in order to assist with pre-operative planning. This will be done by comparing the dynamic hip images in patients with femoroacetabular impingement to the hip images of healthy volunteers with no hip problems.

Study Timeline

• Study Start: 2007-05
• Study First Submitted: 2008-01-21
• Study First Submitted QC: 2008-01-31
• Study First Posted: 2008-02-01
• Primary Completion: 2012-12
• Study Completion: 2012-12
• Status Verified: 2020-03
• Last Update Submitted: 2020-03-06
• Last Update Posted: 2020-03-10

Recruitment & Eligibility

• Status: COMPLETED
• Sex: All
• Target Recruitment: 30

Inclusion Criteria

• All participants (patients and controls) must be between the ages of 18 and 55, with a BMI less than 35.

The patients must have a probable diagnosis of femoro-acetabular impingement (FAI). Their hip pain must have been ongoing for at least 3 months. The controls must have a normal hip as defined by AP pelvis radiographs.

Exclusion Criteria

• Participants (patients and controls) will be excluded if they are pregnant, have a knee injury or replacement, or history of childhood hip disease. Patients will be excluded if have they have arthritis, previous fracture or trauma to the hip, previous hip surgery, dysplasia, or avascular necrosis. Controls will be excluded if they have hip pain.

Study & Design

• Study Type: INTERVENTIONAL
• Study Design: PARALLEL

Arm && Interventions

Group	Intervention	Description
FAI patients	Computed Tomography	This group consists of participants diagnosed with femoroacetabular impingement that are undergoing surgical correction.
Control	Motion analysis	This group consists of healthy control participants with no hip problems.
FAI patients	Motion analysis	This group consists of participants diagnosed with femoroacetabular impingement that are undergoing surgical correction.
Control	Computed Tomography	This group consists of healthy control participants with no hip problems.

Primary Outcome Measures

Name	Time	Method
Validation of kinematic model of hip joint	Within 6 months of recruitment	Development of a kinematical model of the hip joint to simulate virtual joint motion. This will be done by using automatic segmentation using the CT data to generate models.

Secondary Outcome Measures

Name	Time	Method
Joint Kinetics	24 months	Retro-reflective markers will be placed on each participant in a laboratory setting. Joint kinematics will be reconstructed from marker trajectories recorded by a camera system. Together, with EMG data, the investigators will calculate joint kinetics
Muscle Activity	24 months	Retro-reflective markers will be placed on each participant in a laboratory setting. Electromyography (EMG) electrodes will be placed on the skin above the tibialis anterior, medial and lateral gastrocnemius, vastus lateralis and medialis, biceps femoris, semitendinosis and gluteus maximums of both limbs. Muscle activity will be measured using EMG signal recorded during activity.

Trial Locations

Locations (1)

The Ottawa Hospital; 🇨🇦 Ottawa, Ontario, Canada