The shoulder: taking the strain during restraint.

The decision to use or utilize physical intervention techniques is a contentious one. There has been much discussion on the complex legal and ethical dimensions framing the use of force. The risk of injury has also been considered in detail, but almost all of the published work has focused on restraint asphyxia, the prone restraint hold and the use of particular pain compliance techniques such as the wrist flexion hold. This paper focuses on the structure and function of the shoulder and examines how physical interventions and a variety of risk factors can threaten its physical integrity. This paper is for practitioners such as training commissioners, trainers, frontline staff and investigators or regulators who have to make considered determinations on the potential immediate physical impact of a variety of holds and escape manoeuvres. Sound risk assessment must be premised on a sound understanding of anatomy and physiology.