This study will consist of two distinct components. Part one will be a reliability study of manual unloading. Two therapists, both familiar with the technique of manual unloading as described by Kaltenborn17, will perform a manual unloading test, blinded to the previous results. Ten consecutive patients will be recruited from a sample of convenience at the University Of Connecticut Health Center Department Of Rehabilitation. This test will be repeated on the same subjects within 7 days of initial testing. Tests of agreement will then be applied to determine intra and inter-rater reliability.