Related Experiment Videos
Intermittent dislocation of the flexor hallucis longus tendon
M Renard1, J Simonet, P Bencteux
1Department of Radiology, University Hospital-Charles Nicolle, 1 rue de Germont, 76031 Rouen cedex, France. Jacques.Thiebot@chu-rouen.fr
Skeletal Radiology
|February 18, 2003
Summary
This case report details the first instance of intermittent flexor hallucis longus tendon dislocation in a teenage synchronized swimmer, presenting as retro-malleolar syndrome. Dynamic imaging confirmed the tendon dislocated from its groove, a rare condition requiring specific diagnostic approaches.
Area of Science:
- Orthopedics
- Sports Medicine
- Radiology
Background:
- Dislocation of the flexor hallucis longus (FHL) tendon is exceptionally rare.
- This report presents the first documented case of intermittent FHL tendon dislocation.
Observation:
- A 17-year-old synchronized swimmer presented with right internal retro-malleolar syndrome.
- Symptoms included a voluntary "snap" sensation triggered by specific ankle and toe movements.
- The patient experienced intermittent dislocation of the FHL tendon.
Findings:
- Non-enhanced dynamic helical CT and axial MRI were utilized for diagnosis.
- Imaging revealed the FHL tendon dislocated from the posterior intertubercular talar groove.
- The mechanism involved maximal ankle dorsiflexion and interphalangeal plantar flexion of the toes.
Implications:
- This case highlights the importance of considering intermittent FHL tendon dislocation in athletes with retro-malleolar pain.
- Both static and dynamic imaging are crucial for diagnosing this uncommon condition.
- Understanding the specific biomechanical triggers is key for accurate diagnosis and management.