[Critical remarks on examination methods to determine nerve injuries of the hand].

The diagnosis of peripheral nerve lesions remains difficult despite the sophisticated technology which is currently available. Experience with the Doppler, photoelectrical plethysmography and flow studies is analysed. Recording of antidromic sensory action potentials in dependence on acral thermometry as the only objective diagnostic procedure proved correct when compared with the indirect procedures via arterial vascular system, namely Doppler, photoelectrical plethysmography and flow studies. The application of the above techniques in a case report with sphygmographic assessment is described.