**1. Introduction**

Cerebral palsy is the developmental and postural disorder that combines a group of conditions/disease (neuromuscular) that occurs in the developing fetal or infant brain, affecting movement and intelligence that are ascribed to non-progressive disturbances [1]. The prevalence of Cerebral Palsy (CP) all over the world reported a range from 1.5 to 4 per 1000 live births and the average birth prevalence is 2 (approx) per 1000 live births. The rate of prevalence observed varies along with the time and region. Now, the rate of CP is relatively stable. However, prematurity and its complication are still the reason for increased prevalence despite improved neonatal and obstetric care [2].

It is important to mention that the one-size-fits-all approach does not work on the population with cerebral palsy. The fitment must be total contact control over the forefoot, hindfoot and ankle to minimize/optimize the deviation in the planes of the foot. Skeletal alignment is the foundation to the operational success of the orthosis. Loosely fitted orthosis may cause discomfort, piston, skin breakdown and ultimately decreased function [3].

In the old world, the "Corpus Hippocraticum" mentions the first medical description of cerebral palsy, which was written by Hippocrates in his work. Nevertheless, it was emerged in the 19th century by William John Little; thus, Little was the first personality to intensely engage cerebral palsy. Two more stalwarts

William Osler and Sigmund Freud added historical hallmarks to cerebral palsy at the end of the 19thcentury. Since then the significant development has been done in the field of cerebral palsy [4]. William Little argued for the earliest possible diagnosis and intervention in the early stages [5].

The environmental access and daily activities in children with CP are restricted due to the development of secondary complications. However, orthoses play an important role in managing and maintaining posture and balance. The purpose of orthotic treatment is to assist function and gait through correction, prevention and providing the base of support [6]. Orthotics is the branch of modern health science and rehabilitation science that deals with assessment, prescription, fabrication, fitment, and purposeful gait training to the individual who needs orthosis for optimal independence [7]. Orthosis is used to preserve the result of surgical procedures during rehabilitation and prevent reoccurrence with growth. The clinician's poor prescription may lead to rejection of the device, complication to the child and psychological compromise to the family [8]. Ankle Foot Orthosis (AFOs) are used frequently in CP to improve function and prevent contractures and have been found to improve walking speed and energy cost [9]. The hinged AFOs results favor the orthotic implication to the CP child by reducing oxygen demand and ventilator cost [10]. The gait laboratory research suggests that there is an indirect effect of orthosis on the joints of limbs and negative effects can be optimized by the appropriate intervention of the orthosis [11].
