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Related Experiment Videos

Foot function after subtalar distraction bone-block arthrodesis. A prospective study.

S Rammelt1, R Grass, T Zawadski

  • 1Department of Trauma and Reconstructive Surgery, University Hospital Carl Gustav Carus, Dresden, Germany.

The Journal of Bone and Joint Surgery. British Volume
|July 28, 2004
PubMed
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Subtalar distraction bone-block arthrodesis effectively treats malunited calcaneal fractures, significantly improving hindfoot scores and restoring normal gait. This procedure demonstrated excellent union rates and successful correction of foot deformities.

Area of Science:

  • Orthopedic Surgery
  • Foot and Ankle Reconstruction
  • Trauma Surgery

Background:

  • Malunited calcaneal fractures often lead to chronic pain and functional deficits.
  • Subtalar joint malalignment significantly impacts gait mechanics and patient quality of life.
  • Surgical intervention is frequently required to restore hindfoot alignment and function.

Purpose of the Study:

  • To evaluate the efficacy of subtalar distraction bone-block arthrodesis in correcting malunited calcaneal fractures.
  • To assess the functional outcomes and radiographic improvements following the procedure.
  • To analyze the correlation between radiographic correction and functional recovery.

Main Methods:

  • Retrospective analysis of 31 patients (26 men, 5 women) with malunited calcaneal fractures.

Related Experiment Videos

  • Subtalar distraction bone-block arthrodesis performed at a mean of 36 months post-injury.
  • Assessment of outcomes using the American Orthopaedic Foot and Ankle Society (AOFAS) hindfoot score, radiographic measurements, and dynamic pedobarography.

    • Main Results:

    • No cases of nonunion; one early dislocation and one soft-tissue infection reported.
    • Significant improvement in mean AOFAS hindfoot score from 23.5 to 73.2 (p > 0.001).
    • Radiographic correction achieved for talocalcaneal height (61.8%), talus-first metatarsal axis (46.5%), talar declination angle (38.5%), and talocalcaneal angle (35.4%).
    • Dynamic pedobarography showed a return to normal pressure distribution during roll-over and improved gait energetics.
    • Correction of heel height correlated with normalized heel pressure transfer (p < 0.05).

    Conclusions:

    • Subtalar distraction bone-block arthrodesis is a safe and effective treatment for malunited calcaneal fractures.
    • The procedure leads to significant functional improvement and restoration of normal biomechanics.
    • Radiographic correction is directly associated with improved functional outcomes and gait patterns.