IDS ::: Prosthetics ::: Procedures -
Cast Rectification

Cast rectification.
The hollow cast of the patient's residual limb/body section (delete one) is sealed to prevent leakage and filled with liquid plaster of paris. When this has set the outer layers of PoP bandage are removed leaving a solid cast with a rough surface. Most custom made prostheses are manufactured directly over the cast so it needs to be smoothed. Very importantly it's shape needs to be optimised to achieve good fit and function. The process of achieving a smooth cast of the correct shape is known as cast rectification.

A demonstration transtibial cast showing areas for reduction and rectification (marked in red) and addition rectification (marked in blue). Areas of pressure tolerance are for reduction, while areas of sensitivity are for addition. This will tighten or loosen the socket appropriately.

Rectifying a partial foot cast.

Filling a hollow cast with liquid Plaster of Paris to create a solid cast.

Digital Rectification of a cast. During this process data which has been captured digitally is modified using a computer program to make changes to the virtual cast.

Links to other pages in this Prosthetics Practice and Procedures Section:

IDS ::: Prosthetics ::: Procedures - Cast Rectification

IDS ::: Prosthetics ::: Procedures -
Cast Rectification