Mechanical distraction enterogenesis utilizing springs has equal effectiveness in adult and juvenile pigs
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In brief
In brief
This preclinical study demonstrates that spring-mediated mechanical distraction can successfully lengthen intestinal segments in both adult and juvenile pigs, achieving 86-123% lengthening over one week. The technique shows promise as a potential treatment for short bowel syndrome across age groups, though adult intestines require higher distraction forces due to larger diameter.
- Spring-mediated mechanical distraction achieved 86% intestinal lengthening in adult pigs and 123% in juvenile pigs within one week
- No significant difference in lengthening effectiveness between adult and juvenile subjects, demonstrating age-independent feasibility
- Adult pigs required higher spring force (9.7 N/m) and larger diameter springs (1.3 cm) compared to juveniles (5.4 N/m, 1.0 cm)
- Technique shows promise as potential surgical intervention for short bowel syndrome across pediatric and adult populations
- All procedures completed without complications using compressed springs inserted into jejunum with plication fixation
Written by the GCMD Library team from the article.
Abstract
Purpose
We aim to apply our spring-mediated intestinal lengthening technique to adults and children with short bowel syndrome. We hypothesized that spring-mediated intestinal lengthening would be achieved in adult and juvenile pigs.
Methods
Adult and juvenile pigs underwent insertion of a compressed spring into the jejunum. Jejunum was plicated proximal and distal to the capsule for fixation and control jejunum was marked. Pigs were fed a liquid diet for one week. Spring and control segment lengths were compared using Brown-Forsythe and Welch ANOVA test.
Results
Three adult pigs weighing 30.4 ± 2.1 kg and three juvenile pigs weighing 8.9 ± 1.2 kg underwent spring insertion without complications. Springs were compressed from 7.5 to 2 cm and had an average spring constant of 9.7 ± 1.2 N/m in adults and 5.4 ± 1.5 N/m in juveniles. Springs of 1.3 cm diameter were implanted in adults and springs of 1.0 cm diameter were implanted in juveniles. Spring segments lengthened on average by 86 ± 33% in adults (p = 0.04) and 123% in juveniles (p < 0.01) when compared to the initial length. There was no statistically significant difference in lengthening between juvenile and adult pigs (p = 0.2).
Conclusion
Intestinal lengthening was feasible in adult pigs but required a higher force for their larger diameter intestine compared to juvenile pigs.