Subtalar Arthrodesis by Single Versus Double Screws

Study Overview
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Brief Summary
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Compare clinical and radiological outcome of use of single screw versus double screws fixation for subtalar arthrodesis

Detailed Description
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The subtalar joint consists of an anterior, posterior and medial joint facet, which allows for inversion - and eversion of the foot. Several pathologies may lead to pain originating from the subtalar joint, including primary arthritis, posttraumatic arthritis, congenital or acquired deformities, instability, tarsal coalition or inflammatory diseases Management of these pathologies variable including conservative and operative treatment once conservative treatment has failed subtalar fusion is a common surgical procedure which is a well-established and widely accepted There are many surgical techniques described for fusion , one of these techniques is fixation with screws The rate of non-union varies among authors between 0-46%, that's may due to lack of standardization of techniques should be used

Official Title
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Single Versus Double Screws Fixation of Subtalar Arthrodesis : A Prospective Randomized Controlled Study

Conditions
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Subtalar Osteoarthritis Secondary to Inflammatory Arthritis

Intervention / Treatment
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* Procedure: Subtalar Arthrodesis by Screws


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: All patients who will be operated by subtalar fusion for any indication Age range 18 - 65 Exclusion Criteria: Age < 18 years , > 65 Acute calceneal fracture Infection Non union Bone defect that need bone graft Refusing to participate in the study

Ages Eligible for Study
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Minimum Age: 18 Years
Maximum Age: 65 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Allocation: Randomized
Intervention Model: Parallel Assignment
Interventional Model Description: participant divide to 2 groups first group subtalar arthrodesis by single screw second group subtalar arthrodesis by double screws
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Active Comparator: A<br>subtalar arthrodesis by single screw | Procedure: Subtalar Arthrodesis by Screws<br>* Instruments: cannulated screws Steps: supine position , tournique over the thigh, using a extended lateral approach or sinus tarsi approach with joint debridement and preparation. Single-screw fixation was most often placed from posterior to anterior and double screws fixation was placed triangular pattern<br>|
| Active Comparator: B<br>subtalar arthrodesis by double screws | Procedure: Subtalar Arthrodesis by Screws<br>* Instruments: cannulated screws Steps: supine position , tournique over the thigh, using a extended lateral approach or sinus tarsi approach with joint debridement and preparation. Single-screw fixation was most often placed from posterior to anterior and double screws fixation was placed triangular pattern<br>|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Fusion rate | subtalar fusion radiologically and clinically | 3 month | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| Functional assessment -rate of complications(e.g. non-union, post-operative infections, Instability) -secondary surgery procedures | by AOFAS Ankle-Hindfoot Scale | 3 month | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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subtalar arthrodesis, screws