APPLIED RADIOLOGICAL ANATOMY

Detailed explanation-1: -Muscle synergies are defined as ‘consistent patterns of multi-muscle coordination that generate a specific action’. They are thought to be regulated by central pattern generators in the spinal cord and the sensorimotor cortex.

Detailed explanation-2: -What Are Synergy Patterns? Coordinated muscle movements are a result of different muscle groups working together. These movement patterns are called synergies, and are responsible for muscle contraction and motions that appear smooth and controlled.

Detailed explanation-3: -The extension synergy is described as shoulder adduction (SADD) coupled with elbow extension, pronation, and variable postures at the hand, possibly including wrist extension and finger flexion (Twitchell, 1951; Brunnstrom, 1970; Radomski and Latham, 2008).

Detailed explanation-4: -Spasticity often lends to soft tissue shortening due to an over recruitment of shortened muscles because of increased stretch reflexes. This pattern of tightness is called a “synergy.”