Objective methods for determining the functional value of sensibility in the hand.

1. It was observed clinically that tactile gnosis varies directly with the sudomotor function in the hand. 2. Two methods of fingerprinting were elaborated to register the sudomotor function, and consequently the tactile gnosis objectively. They are sensitive, simple to perform and suitable for clinical work. Their anatomical background, sources of error and relative value are discussed. 3. The correspondence between the sudomotor function, determined with these methods, and the tactile gnosis was established. This was done by, firstly, comparing the regions which did not perspire with the ones which became insensible on total denervation of a region of the hand; secondly, by examining the loss of function after nerve block; and thirdly, by comparing the tactile gnosis and sudomotor function in cases of residual median nerve defect. 4. These two qualities do not accompany each other in skin grafts. Grafts regain sudomotor function but never tactile gnosis. 5. A practical procedure for determining the functional value of the cutaneous sensibility in the hand is described. 6. Cases are related illustrating the usefulness of objective study of the sensibility in the hand.

[1]  Adrian.  Receptors and Sensory Perception , 1955 .

[2]  S. Bunnell.  Peripheral Nerve Injuries By the Nerve Injuries Committee of the Medical Research Council. Edited by H. J. Seddon. (Privy Council. Medical Research Council Special Report Series. No. 282.) London, Her Majesty's Stationery Office, 1954. 2 pounds, 15 shillings , 1955 .

[3]  G. Bonney.  The value of axon responses in determining the site of lesion in traction injuries of the brachial plexus. , 1954, Brain : a journal of neurology.

[4]  SVANTE ODÉN,et al.  Detection of Fingerprints by the Ninhydrin Reaction , 1954, Nature.

[5]  W. C. Randall.  The physiology of sweating. , 1953, American journal of physical medicine.

[6]  V. Dole,et al.  VARIATION IN THE FUNCTIONAL POWER OF HUMAN SWEAT GLANDS , 1953, The Journal of experimental medicine.

[7]  Pankov Bs.  Amino acids content in sweat , 1953 .

[8]  J. Napier.  The return of pain sensibility in full thickness skin grafts. , 1952, Brain : a journal of neurology.

[9]  O. Bergeim,et al.  The amino acids of human sweat. , 1946, The Journal of biological chemistry.

[10]  P. Medawar,et al.  Rate of regeneration of peripheral nerves in man , 1943, The Journal of physiology.

[11]  C. P. Richter,et al.  PERIPHERAL NERVE INJURIES DETERMINED BY THE ELECTRICAL SKIN RESISTANCE METHOD , 1943 .

[12]  S. Bunnell.  SURGERY OF THE HAND , 1940, The Ulster Medical Journal.

[13]  L. Guttmann.  TOPOGRAPHIC STUDIES OF DISTURBANCES OF SWEAT SECRETION AFTER COMPLETE LESIONS OF PERIPHERAL NERVES , 1940, Journal of neurology and psychiatry.

[14]  E. Boring.  CUTANEOUS SENSATION AFTER NERVE‐DIVISION , 1916 .

[15]  R. Granit.  Receptors and Sensory Perception , 1955 .

[16]  Zachary Rb.  Results of nerve suture. , 1954 .

[17]  R. Roaf,et al.  Lesions in continuity. , 1954, Special report series (Medical Research Council (Great Britain)).

[18]  Seddon Hj.  Nerve grafting and other unusual forms of nerve repair. , 1954 .

[19]  Seddon Hj.  Methods of investigating nerve injuries. , 1954 .

[20]  R. Bowden.  Factors influencing functional recovery. , 1954, Special report series (Medical Research Council (Great Britain)).

[21]  Kahn Ea.  Direct observation of sweating in peripheral nerve lesions; its use as a simple diagnostic test. , 1951 .

[22]  L. Lofgren.  Recovery of nervous functions in skin transplants with special reference to the sympathetic functions. , 1951, Acta chirurgica Scandinavica.

[23]  L. Davis,et al.  Trauma severity indices , 2004 .