RT Journal Article SR Electronic T1 Measurement of the Achilles tendon reflex for the diagnosis of lumbosacral root compression syndromes. JF Journal of Neurology, Neurosurgery & Psychiatry JO J Neurol Neurosurg Psychiatry FD BMJ Publishing Group Ltd SP 791 OP 795 DO 10.1136/jnnp.45.9.791 VO 45 IS 9 A1 R E Rico A1 E J Jonkman YR 1982 UL http://jnnp.bmj.com/content/45/9/791.abstract AB The Hoffmann reflex and the Achilles tendon reflex were measured in a group of 194 subjects suspected of having a lumbosacral root compression syndrome. The Achilles tendon reflex was elicited manually with a metal hammer. There was a high correlation between the H-M interval and the Achilles tendon reflex-M interval. The usefulness of the Achilles tendon reflex was evaluated in a selected sub-group of 61 patients with proven L5 or S1 root compression. Neither the H-reflex nor the Achilles tendon reflex appeared to be of any value in detecting L5 root compression. Both the H-reflex and the Achilles tendon reflex proved to be useful for diagnosis of S1 root compression syndromes, the latter being the more sensitive method.