Medium-term results of calcaneus lengthening in idiopathic symptomatic flat foot in children and adolescents.

PURPOSE: Calcaneus lengthening can be used in symptomatic flat foot in children, but few details on its medium-term results and complementary procedures are available. METHODS: A total of 20 flexible, symptomatic, idiopathic valgus flat feet (in 15 children; mean age 13.9 years (10 to 17)) were operated on. Complementary procedures were based on preoperative and intraoperative analyses. Radiographic measurements were obtained preoperatively and with at least four years follow-up. RESULTS: At a mean of 8.3 years (4 to 15) postoperatively, 13 feet had good clinical and radiological results, with significant improvement in American Orthopaedic Foot & Ankle Society Ankle-Hindfoot scale scores and radiological measurements. Seven feet had residual pain. Six of them had no osteotomy of the first cuneiform. CONCLUSION: Calcaneus lengthening with adequate complementary musculo-tendinous and/or bone procedures according to preoperative and intraoperative foot deformation leads to good medium-term results. Forefoot supination is the most frequent residual defect. If present intraoperatively, first cuneiform pronation-flexion osteotomy is indicated. LEVEL OF EVIDENCE: IV.

Clinical gait analysis and physical examination don't correlate with physical activity of children with cerebral palsy. Cross-sectional study.

Gait analysis and physical clinical measures are usually performed in children with cerebral palsy to help the surgeons make therapeutic decision. However, the level of physical activity in daily life is not systematically assessed. The aim of this cross sectional study was to examine the correlations between: three-dimensional gait analysis kinematic and spatiotemporal parameters, clinical measures and physical activity. Participants were 30 children with cerebral palsy (10-18 y), with GMFCS I-III. Daily physical activity was measured with an Actigraph GT3X accelerometer in free living environment during seven consecutive days. The percent of time spent in sedentary, in moderate to vigorous physical activity and the number of steps per day were computed from the accelerometer data. Kinematics parameters did not correlate with physical activity. Moderate correlations were found between spatio-temporal parameters and physical activity, for instance timing of toe-off (r = -0.40, p = 0.03). Few physical examination parameters were correlated with physical activity, such as the hip flexors selective motor control (r = 0.69 with moderate to vigorous activity and r = 0.70 with steps per day, p < 0.05). The physical activity profile cannot be sufficiently determined by a combination of clinical measures.