A Z-plasty training model

Published Date: 07th August 2018

Publication Authors: Alfeky H, Bell D, Khan I,

Aims

The Z-Plasty is often a difficult concept for the trainee to design and execute. Our aim was to simulate a scar that needs either re-orientation or lengthening.

Method

The authors researched fabrics with different properties (strength, elasticity and anisotropy) along with mechanisms to simulate scar tension. A number of prototypes were evaluated and one with high anisotropy was identified. Multi-laminar models were then produced using adhesives and silicones to provide a realistic simulation that allowed design and suture placement. This composite structure was then mounted on a tensioning device. This allowed for the creation of a tactile scar with a visual aid that is measurable, to calculate the distance between two points on the scar before and after "surgery". Different types of scarring and variations of Z-Plasty were trialled in a laboratory setting.

Results

This model has been evaluated and used successfully in a training environment on multiple occasions. The haptic and visucal feedback from the model has been found to be outstanding. When released the scar can be visually and objectively assess, and has received excellent feedback.

Conclusion

The Z-Plasty Training Model is an intuitive innovation to simulate a scar, advancing training and assessment for Z-Plasty and scar release.

 

Vaiude, P; Bell, D; Alfeky, H; Khan, I. (2018). A Z-plasty training model - Simulating a scar for training and assessment. International Journal of Surgery. 55 (Suppl 1), S104

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