Mobility devices.
D001766:Blindness / Q000534:rehabilitation*; D002183:Canes; D003446:Crutches; D004582:Electronics, Medical / Q000295:instrumentation; D006801:Humans; D007834:Lasers; D008124:Locomotion; D009983:Orthopedic Equipment; D012682:Sensory Aids; D014465:Ultrasonics; D014853:Walkers