Inability to elicit tendon reflexes in the lower limbs.

Weakness of the muscles responsible for dorsiflexion of the foot, that is, of the movement of the toes towards the shin. The foot dorsiflexors include the tibialis anterior, the extensor hallucis longus, the extensor digitorum longus, and the peroneus tertius muscles.

A sudden movement downward, usually resulting in injury.

Reduced strength of muscles.

A lack of strength of the proximal muscles.

Decreased strength of the neck musculature.

A flexion contracture is a bent (flexed) joint that cannot be straightened actively or passively. It is thus a chronic loss of joint motion due to structural changes in muscle, tendons, ligaments, or skin that prevents normal movement of joints.

Generalized weakness or decreased strength of the muscles, affecting both distal and proximal musculature.

Reduced ability to move the vertebral column with a resulting limitation of neck and trunk flexion.

An abnormally decreased calcium concentration in the blood.

An elevation of the level of the enzyme creatine kinase (also known as creatine phosphokinase (CK; EC 2.7.3.2) in the blood. CK levels can be elevated in a number of clinical disorders such as myocardial infarction, rhabdomyolysis, and muscular dystrophy.

Abnormal (non-physiological) constriction of the pupil.