Image Based Question-71946

In the image,three types of Arthroplasties are shown.”B” type of arthroplasty is used commonly in which condition?

A. Fracture of Elbow joint

B. Fracture of Neck of Femur

C. Osteoarthritis of Hip joint

D. All of the above.

Correct Answer » C Explanation

Ans:B. Fracture of Neck of Femur.

Image shows:

1. Excision arthroplasty
2. Hemiarthroplasty
3. Total replacement arthroplasty

ARTHROPLASTY

• An arthroplasty is an operation for ‘construction’ of a new movable joint.

Indications:

• Broadly, it is used for painful joints where joint mobility is desirable. It is commonly performed for:

1. osteoarthritis of the hip and knee;
2. ankylosis of the elbow; and
3. un-united femoral neck fracture.

Types of arthroplasty :

• Excision arthroplasty: In this type, one or both of the articular ends are excised so that a gap is created between them. The fibrous tissue that fills this gap, by virtue of its flexibility, provides movement at the joint. Commonly this is performed for the hip and elbow.

• Hemiarthroplasty or half joint replacement: In this type, only one of the articulating surfaces is removed and is replaced by a prosthesis of a similar type. The prosthesis is made of metal, silicon or rubber. Commonly, it is performed for fractures of the neck of the femur in elderly people (e.g., Austin-Moore hemiarthroplasty).

• Total replacement arthroplasty: Both the apposing articulating surfaces are excised and replaced by prosthetic components. Commonly, it is performed for hip osteoarthritis – Total hip replacement .