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POTTING OF SPECIMENS Introduction Objective Requirements Procedures Department of Orthopaedic Surgery Introduction Explanation to steps and methodology in potting of specimens . A general guide to the plotting style. Department of Orthopaedic Surgery Introduction Potters are to follow

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potting of specimens
POTTING OF SPECIMENS
  • Introduction
  • Objective
  • Requirements
  • Procedures

Department of Orthopaedic Surgery

introduction
Introduction
  • Explanation to steps and methodology in potting of specimens.
  • A general guide to the plotting style.

Department of Orthopaedic Surgery

introduction3
Introduction
  • Potters are to follow

- the potting steps in sequence

- all safety instructions

. Safety is everyone’s responsibility

… back to Index

Department of Orthopaedic Surgery

objective
Objective

Main Objective in potting:

Hold specimens securely in proper jigs and fixtures for biomechanical testing.

… back to Index

Department of Orthopaedic Surgery

requirements
Requirements

Before the start of the any job, it is a good practice with a checklist to ensure all essential tools are available and in good conditions

Department of Orthopaedic Surgery

requirements6
Requirements

Tool Listings:

  • Dental cement solution and powder
  • Paper cups
  • wood stirrers
  • Jigs and fixtures to contain the specimen
  • Set of screws (self-tapping)
  • Specimens
  • Screws drivers
  • Hand drill and drill bits
  • Personal Protective Equipment (PPE)
  • Masking Tape
  • Paper

… back to Index

Department of Orthopaedic Surgery

procedures
Procedures
  • Thaw the specimens
  • Remove soft tissues from site of the bone that requires screw and dental cement attachment.

CAUTION

Department of Orthopaedic Surgery

procedures8
Procedures

3. Attach screws in a way that properly holds

the specimens and prevents slipping

during the testing process.

- attaching the self taping screw

to the bottom end of the bone.

- space and distribute the screws

evenly

- ensure dental cement can

completely cover the holding

area

Department of Orthopaedic Surgery

procedures9
Procedures
  • Drilling or sharp pointer ice pick assist in placing the screw

Department of Orthopaedic Surgery

procedures10
Procedures

In any drilling operation

WARNING

Department of Orthopaedic Surgery

procedures11
Procedures

4. Select suitable

- Screw size and driver

Attach screw to

specimen

Ensure proper

engagement

Department of Orthopaedic Surgery

procedures12
Procedures

5. Clear jig off oil, grease and other containment.

Ensure:

>=3 bolts are in placed specimen in

place

Department of Orthopaedic Surgery

procedures13
Procedures

6. Attach masking tape to side wall

Prevents leakage of cement fluid to

threaded area

Department of Orthopaedic Surgery

procedures14
Procedures

7. Specimen should be potted in a stable

position and on a level ground.

8. Any mixing of chemicals should be carried

out in the fume hood.

Proportion of mixture 1 portion of fluid : 2 Portion of powder

Department of Orthopaedic Surgery

procedures15
Procedures

WARNING

Department of Orthopaedic Surgery

procedures16
Procedures

9. Pour mixture into jig and wait for mixture

to solidify.

WARNING

Department of Orthopaedic Surgery

procedures17
Procedures

10. Clear off any side spill

Ensure all screws are well conceal in

the fluid level.

Department of Orthopaedic Surgery