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Study identifier: NCT05643079 Synced from ClinicalTrials.gov · July 29, 2026
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Medial Displacement Calcaneal Osteotomy and FDL- Transfer - With a Human, Allogeneic Cortical Bone Screw

Condition: Flat Feet · Flexor Tendon Rupture · Tibialis Posterior Dysfunction  ·  Sponsor: Orthopedic Hospital Vienna Speising

PhaseN/A
Planned participants40
Who can joinAll sexes, 18 Years to no upper limit
Healthy volunteersNo

About this study

The goal of this observational study is to compare the use of a screw made of human bone (Shark-Screw®, Surgebright-GmbH) with the metal/Bio-Tenodesis screw (Arthrex) in the treatment of the symptomatic flatfoot using the medializing calcaneus osteotomy with flexor digitorum longus transfer (FDL) in adult patients. The advantage of the human bone screw is that after surgery no hardware removal is necessary. The screw is transformed from the body to normal bone. The main questions it aims to answer are: * Can the human bone screw achieve union rates like the metal/Bio-Tenodesis screw? * Is the time to union similar between the different screws? * Is the complication rate similar between the different screws? * Are the activity scores American Orthopaedic Foot and Ankle Society (AOFAS), Foot and Ankle Outcome Score (FAOS) and Foot Function Index (FFI) after surgery similar in the compared patient groups? Participants will have * the surgery * follow-ups at 6 weeks, 6 months, 1 and 2 years. * X-rays are performed at each follow up. * CT-scans are performed after 6 months. * activity scores are collected at the follow up after 6 months, 1 year and 2 years.

This description comes directly from the study's public registry record.

Talk to the study team

Florian Wenzel-Schwarz, MD  ·  +43180182  ·  florian.wenzel-schwarz@oss.at

Always discuss trial participation with your own doctor first.

Locations (1)

Abteilung für Kinderorthopädie und Fußchirurgie Orthopädisches Spital SpeisingVienna, AustriaRecruiting

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Source record: clinicaltrials.gov/study/NCT05643079