The value of Weight-Bearing CT scan in the evaluation of subtalar distraction bone block arthrodesis: Case report

Foot Ankle Surg. 2015 Dec;21(4):e55-9. doi: 10.1016/j.fas.2015.08.002. Epub 2015 Aug 22.


Subtalar distraction arthrodesis is performed in certain situations where there is loss of subtalar height, reduced talar declination and evidence of anterior tibiotalar impingement. Standard evaluation includes the assessment of the lateral talocalcaneal angle, calcaneal pitch, talocalcaneal height and talar declination angle on a weight bearing lateral radiograph. We present a case of erosive valgus subtalar osteoarthritis with subtalar collapse managed with a subtalar distraction arthrodesis. A weight bearing CT (WB-CT) scan was used in the assessment. The value of WB-CT for this indication is discussed, along with a discussion on surgical technique, complications and future directions.

Keywords: Bone block arthrodesis; Subtalar distraction arthrodesis; Talar declination; Weight bearing CT.

Publication types

  • Case Reports

MeSH terms

  • Arthrodesis / methods
  • Bone Malalignment / diagnostic imaging*
  • Bone Malalignment / surgery
  • Bone Transplantation
  • Humans
  • Male
  • Middle Aged
  • Osteoarthritis / diagnostic imaging*
  • Osteoarthritis / surgery
  • Subtalar Joint / diagnostic imaging*
  • Subtalar Joint / surgery
  • Tomography, X-Ray Computed / methods*
  • Weight-Bearing