J.Jpn. Surg. Soc.. 59(2): 204-213, 1958
STUDIES ON THE TENSILE STRENGTH OF WOUNDS
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Surgical Department, Sagamihara National Hospital (Director: Prof. Soiti YANAGI and Dr. Tosio TAKAHUZI) Naoyosi ENOMOTO |
As the biological studies of the wound healing, I have tried the estimation of the tensile strength, using the abdominal wall or other areas of adult dogs.
The technique of its determination is as follows :
Eight to ten incisions of 3 cm in length were made on the dog's abdominal wall or others, and tensile strength was counted day by day. The method used was directed by Prof. Yanagi, and I have called it Yanagi's method.
The results are following:
1) Wound healing process is divided into the lag period and fibroplastic period.
Tensile strength in abdominal wall of the animal on normal diet is 1800 g. on the 7th postoperative day, 3500 g. on the 9th, and 5000 g. on the 13th.
This result is defined as the control.
2) When the wound is made on different spot, for example, back wall of the animals, tensile strength shows different curve.
3) Compared with the data reported by Localio and Howes, the method I used got about same result.
4) Starvations is often recognized during pre and post-operative stadiums.
The curve of tensile strength of the animals which was layed under absolute hunger for 13 days delays 3 or 4 days.
6) The result of tensile strength of hypoproteinemic dog in dehydration was the worst.
The influence of the regional factors on the tensile strength is as follows :
5) Bleeding from the wounds during operation has no effect on the result of wound healing in fibroplastic period.
7) When the gelatinsponge is applied subcutanously, tensile strength is same as the control or 10% better in fibroplastic period.
Using biogelatine, the curve of healing process is same as the control in fibroplastic period, but the curve of lag period is higher than the control.
(author's abstract)
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