Early and subtle signs in low-back sprain.

摘要: The authors have previously reported myalgic hyperalgesia as a useful localizing sign in "low-back sprain" patients with no physical findings. This paper describes some other subtle signs related to the phenomenon of denervation supersensitivity which is well known physiologists and clinicians involved peripheral nerve disease, yet its not been applied low-back pain. Following neurons, muscle receptors become supersensitive transmitter substances different forms stimuli. Since mixed nerve, findings are multiphasic include autonomic dysfunction, trophic changes, cutaneous hyperalgesia, increased tone. One or more these occurred 30 secondary pain but less often primary mechanical pain; their presence, though slight, asymptomatic controls may identify those individuals vulnerable back.