ISSN:
0003-276X
Keywords:
Life and Medical Sciences
;
Cell & Developmental Biology
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Medicine
Notes:
Enlargement of the ulnar nerve behind the medial epicondyle was noticed in museum and demonstration specimens and also in the dissection room cadavers. An investigation was carried out to study the incidence and character of the enlargement entirely from fresh autopsy cases, which included 400 ulnar nerves from 200 autopsy cadavers of Chinese subjects of all ages. The enlargement was graded into three categories - slight, moderate, and marked. Histological sections, 40 μthick and stained with H. & E., were examined. Twenty nerves from ten adult bodies were tested under stress for extensibility along the length of the nerve. Fortynine per cent of the ulnar nerves and 60.5% of cadavers of the total sample showed this enlargement, the incidence being greater in males than in females and slightly greater in the right limb than the left limb. Slight and moderate enlargement occurred in all ages; marked enlargement occurred only in ages over 35. The enlargement presented a normal histological picture; the enlargement was due to an increase of connective tissue present. The experimental results of extensibility along the length of the nerve showed the retro-epicondylar region, whether enlarged or not, to be more extensible than the rest of the nerve. While there seemed to be a tendency of a decrease of extensibility with enlargement, the correlation between extensibility and enlargement was insignificant statistically.
Additional Material:
1 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/ar.1091450205
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