APPLIED RADIOLOGICAL ANATOMY

Detailed explanation-1: -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-2: -The extension synergy for the lower extremity includes hip extension, adduction and internal rotation, knee extension, ankle plantar flexion and inversion, and toe plantar flexion.

Detailed explanation-3: -In clinical practice, the typical flexion synergy of the upper limb post-stroke includes scapula lifting and internal rotation, glenohumeral joint abduction and external rotation, elbow flexion, forearm supination or pronation, and wrist and finger flexion.

Detailed explanation-4: -Historically, two main synergies of the upper limb have been identified after stroke. These are the flexor synergy, in which shoulder, elbow, and wrist flexion are obligatorily linked, and the opposite extensor synergy (Twitchell, 1951; Brunnström, 1970).