Pedicle skin flaps in ponies: viable length is related to flap width.

This research investigates the correlation between the width of pedicle skin flaps and their viable length in ponies. It contains evidence that a wider pedicle flap contributes to a greater survival length, suggesting that veterinary practitioners may achieve better outcomes by utilizing wider flaps in skin defect reconstruction procedures.

Investigation Scope and Method

• The research focused on characterizing the correlation between pedicle skin flap width and viable (survival) length on pony flanks.
• Four dorsally based, pedicle skin flaps with a fixed length of 20 cm and varying widths—3, 6, 9, or 12 cm—were created on the flank of each of the 10 ponies in the study. The order of the flaps was randomized.
• The viability of the skin flaps was evaluated two weeks postoperative by examining skin texture, appearance, hair depilation, and wound healing.

Key Findings

• The study revealed variations in the viable lengths of similarly-width flaps between different animals.
• Nevertheless, it detected a significant difference in the viable lengths of differently-width flaps (P = 0.002).
• The viable length of the narrower (3 cm wide) flaps drastically differed from that of the wider (12 cm) flaps (9.69 +/- 1.1 cm vs 12.97 +/- 1.0 cm, respectively).
• The research found a positive linear correlation between flap width and viable length (r2 = 0.141, P = 0.017), indicating that as the flap width increased, so did the viable length.
• There was no significant effect of flap sequence (the order in which flaps were placed from front to back relative to others) on the viable length (P = 0.286).

Implication of the Findings

• The study provided supporting evidence to the previously unproven assumption of a relationship between the width of pedicle skin flaps and their viable length.
• The findings suggest that for local flaps employed in reconstructing skin defects on the flank region of horses, using wider pedicle flaps could lead to better outcomes.