Potting of specimens
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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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Presentation Transcript
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POTTING OF SPECIMENS

  • Introduction

  • Objective

  • Requirements

  • Procedures

Department of Orthopaedic Surgery


Introduction l.jpg
Introduction

  • Explanation to steps and methodology in potting of specimens.

  • A general guide to the plotting style.

Department of Orthopaedic Surgery


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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


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Objective

Main Objective in potting:

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

… back to Index

Department of Orthopaedic Surgery


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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


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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


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Procedures

  • Thaw the specimens

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

CAUTION

Department of Orthopaedic Surgery


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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


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Procedures

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

Department of Orthopaedic Surgery


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Procedures

In any drilling operation

WARNING

Department of Orthopaedic Surgery


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Procedures

4. Select suitable

- Screw size and driver

Attach screw to

specimen

Ensure proper

engagement

Department of Orthopaedic Surgery


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Procedures

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

Ensure:

>=3 bolts are in placed specimen in

place

Department of Orthopaedic Surgery


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Procedures

6. Attach masking tape to side wall

Prevents leakage of cement fluid to

threaded area

Department of Orthopaedic Surgery


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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


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Procedures

WARNING

Department of Orthopaedic Surgery


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Procedures

9. Pour mixture into jig and wait for mixture

to solidify.

WARNING

Department of Orthopaedic Surgery


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Procedures

10. Clear off any side spill

Ensure all screws are well conceal in

the fluid level.

Department of Orthopaedic Surgery


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