On the restoration of co-ordinated movements after nerve-crossing, with interchange of function of the cerebral cortical centres / by Robert Kennedy.

  • Kennedy, Robert, -1924.
Date:
1901
Catalogue details

Licence: In copyright

Credit: On the restoration of co-ordinated movements after nerve-crossing, with interchange of function of the cerebral cortical centres / by Robert Kennedy. Source: Wellcome Collection.

Provider: This material has been provided by The University of Glasgow Library. The original may be consulted at The University of Glasgow Library.

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    communication was made with the peripheral segment. The central segment then passed to the internal face of the anconeus internus muscle (inner head of triceps), instead of continuing its coiu'se round the humerus. In this course it passed under tlie central segments of the median, ulnar, and musculo-cutaneous, ahout 2 centims. above their junction to the peripheral segment of the musculo-spiral, to which it was attached merely by loose connective tissue. A])out 2^ centims. lower down it passed into the apex of a triangular-shaped swelling, the base of which was attached to the peripheral segments of the ulnar, median, and musculo-cutaneous, which followed a normal distribution. At the flexure of tlie elbow joint, however, tlie nuisculo- cutaneous gave ofl'a considerable branch which joined the median. The central segments of the median, ulnar, and musculo-cutaneous, after following their normal course to the middle of the Innnerus, turned backwards and outwards to reach the posterii^r border of the anconeus interiuis, crossing over in tlieir course the central segment of the nuisculo-spiral. They passed together over the posterior l)order of that nuiscle to reach its external lace, on wbich, about 05 centiin. from the ])osterior Ijorder, was situated tlie junction with the peripheral segment of the musculo- spiral, which followed a normal distribution. ExrERiMENT II.—Cross Union of tlie Central S('<jmcnfs of tlic divided Mnscido- cHtaneous, Ulnar, and Median Nerves witli the Periplieral Ser/nieiit of the dirided Musculo-spiral and. vice versa. - A collie Ijitcli, aged aljout 1 year, on lotli Fel)ruary, 1899, was narcotised with 0'5 gramme morphia sulphate followed by inhalation of ether. The same procedure was carried out on the right fore-liml) as in the previous experiment, and the following was the I'esult. The dog walked about on the splinted leg till the s])lint was removed at the end of the 14th day. On that day the leg was supported by a plaster of Paris bandage reaching up to the middle of the fore-arm only. On the 17th day the dog was still holding u]) the fore-limb when running and walking, except very occasionally, when it j^laced it on the ground. By the 21st day the leg was much more frequently used, and used alternately with the sound limb in walking. At the 31st day the dog was using the leg constantly in walking. Tlie plaster support was therefore removed, and it was then f()und tliat the dog used the un- supported leg perfectly in walking and running about. Occasionally it bent over, 1)ut the dog never allowed the end of the radius to come into contact with the ground when it bent, always lifting the leg and placing it again correctly on the ground. Occasionally it bent over in this way, being innnediately readjusted ; hwt on supporting tlie limb with a simple flannel l)andage ap})lied from tlie claws up nearly to the elbow, the doii' ran about, never, as far as could be observed, making a false move with the limb. On the r)4th day improvement had continued, and now the dog gave the paw on request.