unstable clinical condition having had cerebrovascular disease, intra-articular drug injection or surgery of the lower extremities in the last 6 months inability to walk independently, even with an assistive device having serious neuromuscular problems not being cooperative enough to answer and understand questionnaires and scales

unstable clinical condition having had cerebrovascular disease, intra-articular drug injection or surgery of the lower extremities in the last 6 months inability to walk independently, even with an assistive device having serious neuromuscular problems not being cooperative enough to answer and understand questionnaires and scales