Motion Analysis in Patients With Hallux Rigidus

Study Overview
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Brief Summary
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The aim was to investigate with a multi-segmental foot model the kinetic and kinematic in patients with a hallux rigidus, before and after different type of surgery.

Detailed Description
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None of the patients received surgery BECAUSE of the study. We have only performed motion analysis in patients, who were already scheduled for one of the described type of surgery (prospective group) or who already previously received one the type of surgery (retrospective group).

Official Title
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Motion Analysis in Patients With Hallux Rigidus Before and After Different Types of Surgery

Conditions
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Hallux Rigidus

Intervention / Treatment
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* Other: Motion Analysis


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: patients with osteoarthritis of one or both first metatarso-phalangeal joints (hallux rigidus) patients after surgery due to osteoarthritis of one or both first metatarso-phalangeal joints (hallux rigidus) Exclusion Criteria: previous operations on the foot and ankle rheumatic diseases relevant foot deformities other than hallux rigidus

Ages Eligible for Study
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Minimum Age: 18 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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Accepts Healthy Volunteers

Study Plan
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How is the study designed?
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Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Control group<br>Healthy age matched control subjects | Other: Motion Analysis<br>* 3D Motion analysis with retroflective markers on the skin (Vicon camera system) of the foot and lower leg (kinematics), walking over force plate (kinetics) and pressure plates (plantar pressure distribution).<br>|
| Cheilectomy prospective group<br>Patients with hallux rigidus treated by the surgery type cheilectomy | Other: Motion Analysis<br>* 3D Motion analysis with retroflective markers on the skin (Vicon camera system) of the foot and lower leg (kinematics), walking over force plate (kinetics) and pressure plates (plantar pressure distribution).<br>|
| Arthrodesis prospective group<br>Patients with hallux rigidus treated by the type of surgery arthrodesis | Other: Motion Analysis<br>* 3D Motion analysis with retroflective markers on the skin (Vicon camera system) of the foot and lower leg (kinematics), walking over force plate (kinetics) and pressure plates (plantar pressure distribution).<br>|
| Mixed prospective group<br>Patients with hallux rigidus treated by other type of surgery: Arthoplasty, joint resection (Keller-Brandes technique) | Other: Motion Analysis<br>* 3D Motion analysis with retroflective markers on the skin (Vicon camera system) of the foot and lower leg (kinematics), walking over force plate (kinetics) and pressure plates (plantar pressure distribution).<br>|
| Cheilectomy retrospective group<br>Patients after cheilectomy due to hallux rigidus | Other: Motion Analysis<br>* 3D Motion analysis with retroflective markers on the skin (Vicon camera system) of the foot and lower leg (kinematics), walking over force plate (kinetics) and pressure plates (plantar pressure distribution).<br>|
| Arthrodesis retrospective group<br>Patients after arthrodesis of the metatarsophalageal joint due to hallux rigidus | Other: Motion Analysis<br>* 3D Motion analysis with retroflective markers on the skin (Vicon camera system) of the foot and lower leg (kinematics), walking over force plate (kinetics) and pressure plates (plantar pressure distribution).<br>|
| Mixed retrospective group<br>Patients after other types of surgery due to hallux rigidus: arthroplasty or resection of the first metatarso-phalangeal joint | Other: Motion Analysis<br>* 3D Motion analysis with retroflective markers on the skin (Vicon camera system) of the foot and lower leg (kinematics), walking over force plate (kinetics) and pressure plates (plantar pressure distribution).<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Change of hallux range of motion |  | baseline (=1 day before surgery) and 1 y. after surgery for the prospective groups, more than one year after surgery for the retrospective groups |