Plaster of Paris technique introducton

 Plaster of Paris (POP) Technique

INTRODUCTION

Plaster of Paris (POP) is made from gypsum (hemi hydrated calcium sulfate powder)and it is the practice for hospitals to make their own plaster bandages by impregnating wide mesh gauze bandages with dry plaster base. These are then carefully rolled by hand and used before they get decay storage.

     If the patient can afford the cost all plaster casts are now made from commercially produced bandages which are supplied in varying widths and are uniform in their spreading and setting characteristics.

•   POP bandages are reasonably cheap, versatile, widely available and easy to use, they are comfortable and, being somewhat porous, absorbs perspiration and secretions.

•   The strength of casts is adequate for most purposes and it is radiotranslucent.

•   It does also have disadvantages and many new materials are currently being developed as possible substitutes (Resins and Fiberglass).

•           Even when carefully built up to give maximum strength for weight and rigidity, there can be uncertain immobilization, particularly when POP is applied to a swollen limb. Finally, it is not waterproof and, for this reason, quickly disintegrates if allowed to get wet.

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