Lawn-Tennis Arm.—1. Effleurage.

2.   Light circular movements over back of forearm, avoiding tender spots.

3.   Passive movements.

There is sometimes a soft swelling on the outside of the forearm, just below the elbow-joint, about the size and shape

Fig. 108.—Flexing the Forearm

of an egg, which should be carefully treated with light circular movements. Movements of flexion, extension, pronation and supination should be made very carefully. Pronation is most painful.

One of the first experiments made by Professor von Mosengeil was on the joints of a rabbit. He injected Indian ink into the knee-joints of a rabbit ; one joint was masséed, but not the other. This was repeated three times, at intervals of two hours, the rabbit being set free between. At the last attempt to inject, the knee that had not had massage would not receive the ink, and was much swollen. The rabbit was killed, and the swollen knee was found full of ink, while in the knee which had massage no ink was found, and there was no swelling ; ink was found in the lymphatics leading from the joint and in the glands beyond. The muscles on the side that had been masséed were black. This experiment proved the value of massage in effusion in joints.