Question

Spinal implants, knee & hip joints comprise the majority of joint procedures. Describe & classify these joints & discuss the considerations that must be taken into account when designing devices for these applications.

Answer 1

Spinal implants:- We can say that the spinal implant is the method of treatment by the surgeons. It can be use during surgery to treat deformity, stabilize and strengthen the spine, and facilitate fusion.

Non-fusion implants are used without bone graft.

Spinal implants technologies utilized in spine surgery can be classified into two groups:-

A). Fusion devices ( which fuse together two or more vertebrae ).

B). Non-fusion devices ( which attempt to keep the segmental motion between vertebrae ).

Knee & hip joints:- These joints are very active and busy joins in our body. These joints may may get wear and tear. A cover named cartilage covers our knee & hip joints and help them to glid smoothly. In the old age these joints can wear away, the result is that bones of the joints rub against each other without enough cushioning.

This is called osteoarthritis (OA).

The structural classification of these joints:-

1. Fibrous

2. Cartilaginous

3. Synovial

And on the basis of functional classification it can be classified into three parts:-

1. Synathroses

2. Amphiathroses

3. Diathroses