Dynamic characteristics of skin reaction force in different body postures
Nick Marsidi (Leiden University Medical Center, Ziekenhuisgroep Twente)
Karlijn M.J. Scheepens (Student TU Delft, Leiden University Medical Center)
Jelle J. Goeman (Leiden University Medical Center)
T. Horeman (TU Delft - Medical Instruments & Bio-Inspired Technology)
Roel E. Genders (Roosevelt kliniek, Leiden University Medical Center)
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Abstract
Mechanical stress influences scarring of a surgical wound. Several lines have been proposed for the best excision direction. It is unknown if these lines still apply when the body posture changes. The objective is to measure the skin reaction force in four directions and determine the direction of least force. Secondary objective is to determine if the reaction force varies in a different body posture. Skin reaction force was measured with the compressiometer in 30 participants on four different locations (forearm/upper arm/shoulder blade/lower back) in four directions (0°–45°–90°–135°) and two body postures. The direction of least skin reaction force changed with a different body posture and was significant for the forearm (p < 0.01) and shoulder blade (p = 0.05) The skin reaction force in all four direction changed significantly in a different body posture, except the 45° line in the upper arm and shoulder blade. Our results demonstrate that the skin reaction force in four directions in four locations varies with change in body posture. Focus should therefore not only lay on choosing the right direction, but also on managing skin tension postoperatively.
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