J Korean Foot Ankle Soc.  2008 Dec;12(2):117-121.

Clinical Results of the Subtalar Arthroereisis for the Flat Foot

• Moon JS
• Bae WH
• Seo JG
• Lee WC

Abstract

PURPOSE
To determine the clinical and radiographic results of arthroereisis using the Kalix(R) implant (Newdeal, Lyon, France) for the treatment of flexible flatfoot deformity.
MATERIALS AND METHODS
From February 2005 to February 2007, we performed the subtalar arthroereisis on 8 patients (9 feet) of symptomatic flexible flat feet after more than 6 months of conservative treatment. Average age was 14.5 years (11~29 years) old. We checked the functional status with AOFAS functional score pre-operatively and at final follow-up. Radiologically, we took weight bearing anterior to posterior and lateral view of the feet, and measured the talo-first metatarsal angle, calcaneal pitch angle in pre-operatively and at final follow-up.
RESULTS
Mean follow up period was 34.4 months. Average AOFAS score improved from preoperatively 65.6 to postoperatively 94.8. Average lateral talo-first metatarsal angle reduced from 12.8degrees preoperatively to 1.6degrees at final follow-up. Average anterior to posterior talo-first metatarsal angle was reduced from 15.1degrees preoperatively to 8.3degrees at final follow-up. Average calcaneal pitch angle was increased from 9.5degrees preoperatively to 12.0degrees at final follow-up.
CONCLUSIONS
Subtalar arthroereisis with Kalix(R) implant can be considered to be one of treatment options symptomatic flatfoot deformity patients.

Keyword

Flatfoot; Arthroereisis; Kalix(R)

MeSH Terms

Congenital Abnormalities
Flatfoot
Follow-Up Studies
Foot
Humans
Metatarsal Bones
Weight-Bearing