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Updated: Sep 20, 2025
A Mini-Invasive Internal Fixation Technique for Studying Immobilization-Induced Knee Flexion Contracture in Rats
Published on: May 20, 2019
Cast-rod construct for gradual correction of fixed knee flexion deformities in young children with arthrogryposis:
Mohamed Yahya Hassanein1, Almeldeen Khalf2, Mohamed Khaled2
1Department of Orthopaedic and Trauma Surgery, Assiut University Hospitals, Assiut, Egypt; Department of Orthopaedics, Queensland Children's Hospital, South Brisbane, Queensland, Australia.
Introduction:
Fixed knee flexion deformities (FKFDs) are common in children with arthrogryposis, yet their management in younger children is underreported.
Material And Method:
This study describes a non-invasive cast-rod construct for the gradual correction of FKFDs secondary to arthrogryposis.
Results:
This study presents preliminary results from 18 knees in 12 patients under four years old (median age at 30 mo, 18-48). The median knee flexion contracture angle improved from 54.5 degrees (27-90) to 10 degrees (0-30) after cast removal, (p < 0.05). Treatment lasted for a median of 32 days (21-68). At a median eight months follow up (3-47), the angle increased to a median of 28 degrees (10-35), which remained significantly lower than the initial angle, (p < 0.05).
Conclusion:
The cast-rod construct appears to be an effective tool for improving FKFDs in young children with arthrogryposis: however, further research with extended follow-up is needed to assess the long-term durability of these outcomes.
Level Of Evidence:
IV; Case series.
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