04602618 is referenced by 19 patents and cites 3 patents.

A machine for applying passive exercise to a hip-joint following surgery. The machine includes a traction frame overlying the patient's bed, a leg cradle suspended from the traction frame, and power driven tensile elements connected to the leg cradle and a power drive imparting compound swivel movement to the leg cradle and the patient's leg about orthogonal axes centered at the socket of the hip-joint.

Title
Continuous hip-joint motion machine
Application Number
6/687718
Publication Number
4602618
Application Date
December 31, 1984
Publication Date
July 29, 1986
Inventor
Robert W Berze
2 N. 451 Mildred St., Glen Ellyn, 60137
IL, US
Agent
Leydig Voit & Mayer
IPC
A61H 1/02
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