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Twelve patients who had previously been treated for palsy of the long thoracic nerve of Bell and resultant serratus anterior paralysis were examined in a follow-up study designed to determine their extent of recovery and/or residual disability. The patients' histories were reviewed, following which they were recalled for updating of the history and reexamination. It was found that those patients whose lesions were due to acute trauma had only partial or no recovery of serratus function, while those with infectious, toxic, allergic or idiopathic etiologies had partial or complete recovery. The occurrence of a prolonged interval between onset of symptoms and institution of therapy was found to adversely affect prognosis. Among those patients with no recovery of serratus anterior function, some were able to maintain relatively good active motion in the affected shoulder by substituting with the trapezius.

Most patients with obstetrical paralysis have some useful functional return, and early recognition and treatment help prevent rapidly developing shoulder contractures. Initial physical therapy includes passive range of motion exercises. Fixed contractures must be released prior to reconstructive surgery designed to improve funtion. An approach to the diagnosis, evaluation, and treatment of obstetrical paralysis is given.

The discharge of neurons in cerebellar dentate nucleus and cerebral motor cortex was recorded on alternate days in each of 3 monkeys in association with prompt arm movement in response to a light signal. The time of change of the discharge of each neuron in relation to arm movement was computed. The distributions of the time of change for cerebellum and cerebrum overlapped, but the cerebellar distribution was shifted slightly earlier.

A single-shock stimulus to the skin of widespread and distant parts of the body such as the face, sites in the upper limb, trunk, buttock, and feet produced changes in amplitude of the ankle jerk. A regulated and stabilized system was used for eliciting the ankle jerk and for delivering an unvarying single-shock conditioning stimulus; 35 normal subjects were studied. The characteristics of the recovery curve of the monosynaptic reflex after stimulation at these cutaneous sites are described.