The hydrogoniometer and assessment of gleno-humeral joint motion.

Inter-observer and intra-observer reliability tests have been investigated for the passive ranges of gleno-humeral abduction, lateral rotation with arm by the side and both lateral and medial rotation with the upper arm abducted to 90°, using the Hydrogon-iometer. This device allows accurate quantification of gleno-humeral movement and is most appropriate for the Physiotherapy profession as an inexpensive, simple measuring device.