J Korean Foot Ankle Soc.  2009 Jun;13(1):68-74.

Subtalar Distraction Two Bone-Block Arthrodesis for Calcaneal Malunion

• Chung HJ
• Bae SY
• Lee HS

Abstract

PURPOSE: This study was designed to evaluate the results and efficacy of subtalar distraction two bone-block arthrodesis for calcaneal malunion.
MATERIALS AND METHODS
From January 2004 to June 2007, we operated on 8 patients (12 cases). There were 7 male patients and 1 female patient; their mean age was 42 years. 8 cases among them were operated initially. The period between initial injury and arthrodesis was 21 months. At an average follow up was 19 months. In operation, we used extensile lateral approach and arthrodesis was performed through tricortical two bone-block and cannulated screws. The Ankle-Hindfoot scale was used for clinical evaluation. In radiologic analysis, plain X-ray and CT were examined union and various parameters.
RESULTS
All cases achieved radiologic union at the final follow-up. The mean Ankle-hindfoot scale (maximum of 94 points) increased from 43.4 points preoperatively to 84 points at the final follow-up. The radiologic analysis of the pre- and postoperative standing lateral radiographs showed and average increase of 5.5 mm in talo-calcaneal height, 5.1 degrees in talocalcaneal angle, 6.1 degrees in talar declination angle and decrease of 5.7 degrees in talo-first metatarsal angle.
CONCLUSION
The short term results of subtalar distraction two bone-block arthrodesis is promising, but longer follow-up was needed.

Keyword

Calcaneus; Malunion; Distraction two bone-block arthrodesis

MeSH Terms

Arthrodesis
Calcaneus
Female
Follow-Up Studies
Humans
Male
Metatarsal Bones