“…Among the included studies, the majority were cohort in design (13 retrospective and 1 prospective cohort studies), followed by case series (4 studies), case control (1 study), single-armed clinical trial (1 study), cross-sectional (1 study), and randomized controlled trial (1 study). The overall number of included patients with CP in our study is 3595 patients and 4814 limbs/feet, ranging from 7 patients in the study of Goncalves et al [ 22 ] to 1147 patients in the study of Naidu et al [ 28 ]. Most of the included studies reported the data of patients with the spastic type of CP (15 studies) [ 6 , 7 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 30 , 31 , 35 ].…”