osseointegrated prosthetics
DESCRIPTION
Review on osseointegrated prosthetics.TRANSCRIPT
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Develop a bone-integration method topermanently implant limb prosthesis
By Lokesh Patil
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Introduction
• 1.7 million people with limb loss in US• Types of available lower limb prosthesis Limitations of socket type prosthesis - Skin irritations -Bone deterioration -Soft tissue damage -Need for refitting
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Contd..
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Osseointegration
• What is Osseointegration• Different stages of osseointegration• Factors affecting osseointegration
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Titanium properties
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Current bone-integration methods
• Two stages of surgeries performed Stage 1- Implant is fixed in medullary cavity Stage 2: Abutment fixed after 6 months
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Advantages of bone-anchored prosthesis
• Lower feeling of weight• More and precise control over prosthesis• No pain, perspiration and soft tissue damage• No need for socket replacement• Easy donning and doffing• Osseoperception
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Disadvantages
• Two surgeries needed at gap of around six months
• Relatively long Rehabilitation time• High risk of deep-infection• Chances of loosening of implant from the
bone
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Proposed design
• Using a grid blasted ribbon type implant• Incorporation of porous coating of tantalum• Rough surface rather than smooth• Proper fail-safe mechanism
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Limitations, future work and ethics
Limitations-Not enough clinical data-High costs of the methodFuture Work- Use of antimicrobial membranes- Incorporation of soft tissues for load transfer
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Ethics
• Debated use in sports• Can be afforded by a small section of society
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Questions