Wear Mechanics in Joint Replacement

Types of Wears

Mode I - Joint Articulation

Mode II - Primary Articular surface non intended to be a bearing surface (femoral head and metal

                 cup in acetabulum )

Mode III - Articulating surface and debris


Mode IV - One non weight bearing surface (polyethylene insert and a tibial tray )



Mechanism

Adhesion - repeated multiaxial loading leading to cracks.

Abrasion- hard and soft material objects in contact and motion.

Third body wear

Fatigue

Corrosion












Comments

Popular posts from this blog

Outline of Treatment of Spinal Tuberculosis

COXA VARA

Paediatric Supracondylar Humerus Fracture

Hind Foot amputation

Timing and Outcome of Surgery in Hip Fractures