الفهرس 
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Abstract
The purpose of this study was to evaluate the clinical, functional and radiological
outcome of calcaneal lengthening osteotomy for the treatment of symptomatic flexible
flatfoot deformity in skeletally immature patients. A prospective multicenter study was
conducted on 15 feet of 15 patients who underwent lateral calcaneal lengthening with soft
tissue procedure for symptomatic flexible flatfoot in immature patients in the period
between October 2017 and June 2020. There were 4 Males (26.7%), and 11 female
(73.3%),The mean age at time of surgery was 12.87 years (8 – 17 years old) and follow up
period was 6 months.
The mean (AOFAS) had improved from 59.27 ± 7.05 (38.0 – 68.0) preoperatively
to 96.27 ± 5.08 (83.0 – 100.0) postoperatively (P value < 0.001).
Radiographic criteria revealed improvement and statistical significant difference;
on the lateral view: the mean calcaneal pitch angle improved from 7.89 ± 6.40(range 2.17-
13.24) to be 17.81 ± 4.98 (range8.79 – 26.41), P value 0.001. The mean lateral talar-first
metatarsal angle improved from 7.72 ± 4.52 (range 2.77 – 18.11) to be 3.66° ± 2.42 (range
0.0 – 10.15), P value 0.001. The mean lateral talo- horizontal angle improved from 18.66 ±
5.55 (range 10.7-30.93) pre-operatively to be 21.29 ± 3.85 (range 15.32 – 28.44), with P
value 0.019. On the dorsoplantar view: the mean talar-first metatarsal angle improved from
8.42 ± 5.94(range 0.0 – 19.40) pre-operatively to be 4.92 ± 4.49, (range 0.0 – 18.99) post
operatively, P value 0.015.
Regarding family satisfaction 11 cases were satisfied and 4 cases were unsatisfied.
The results of this study support the combination of lateral column lengthening and
soft tissue reconstruction for treatment of flexible flat foot deformity, and treatment of all
deformity component in one setting. The adopted technique revealed satisfactory result
both in children and adolescents.