Benign joint hypermobility with neuropathies: documentation and mechanism of median, sciatic, and common peroneal nerve compression.

We report three patients in whom carpal tunnel syndrome was due to neurapraxis as a consequence of unusual sleep postures enabled by their benign joint hypermobility syndrome (BJHS). A fourth patient also had bilateral sensory sciatic neuropathy and a common peroneal palsy, similarly due to regularly adopted unusual postures. Recognition of such cause-effect mechanisms and their simple solution in BJHS should obviate needless investigation and unnecessary surgery.