High Quality Content by WIKIPEDIA articles! A splint is a device used for support or immobilization of limbs or of the spine. It can be used: By the emergency medical services or by volunteer first responders, to immobilize a fractured limb before the transportation; it is then a temporary immobilization; By allied health professionals such as occupational therapists, physiotherapists and orthotists, to immobilize an articulation (e.g. the knee) that can be freed while not standing (e.g. during sleep). By athletic trainers to immobilize an injured bone or joint to facilitate safer transportation of the injured person. By emergency room physicians to stabilize fractures or sprains until follow-up appointment with an Orthopedist. In most ERs, a fibreglass splinting material, called Orthoglass, is commonly used for several reasons.