Specialist in Spine & Joint Replacement Surgery

Hip Replacement

Know your Hip Joint

The hip joint is a ball and socket type of joint. The socket is in the form of cup called Acetabulum. The ball is globular, in shape called a Femoral head. Both, Acetabulum and Femoral head have a special type of coverings called as Cartilage. The ball i.e. Femoral head with cup i.e. Acetabulum forms a joint which allows us various movements at the hip and permits weight bearing.

What is Arthritis of the Hip?

Various disease conditions can cause damage to either femoral head or acetabulum or both or their covering cartilage. Damage to any of these causes roughening of the joint surfaces which results in friction and pain during walking or standing is called as arthritis.

Common conditions resulting in arthritis of hip are Avascular Necrosis of a femoral head, Rheumatoid Aarthritis, Ankylosing spondylitis, fracture of the femoral neck etc.

When is Total Hip Replacement required?

If the articulating surface of hip joints are arthritic and a patient has an inability to perform daily routine due to pain, is the time to go ahead for Total Hip Replacement Surgery.

With advances in surgical technique and easy availability of international standard quality implant, a result of THR Surgery is predictable and long-lasting.

What is done in Total hip Replacement?

Hip Arthritis
Cemented Hip Replacement
Uncemented THR

Your Questions

Damage, diseased femoral head (a ball) is removed.
Damaged articular cartilage of acetabulum is removed to expose underlying bone.
Acetabular cup is fitted in acetabulum in perfect position.
The femoral head is replaced with an artificial ball and fitted in a femur.

1) Cemented THR:
Medical bone cement is used for fixation of the implant i e acetabular cup and femoral stem to the bone.

2) Uncemented THR:
The implant is press fit to the bone without intervening bone cement. Generally cemented total hip replacement is done in elderly age group patients but can be done at any age. Uncemented total hip replacement is usually done in young active individuals

  • 1) UHDPE (Plastic) Cup and Metal ball. Low cost most commonly used.
  • 2) UHDPE cup and Ceramic Head.
  • 3) Ceramic cup and Ceramic head. Costly but best combination for young patients.
  • 4) Metal cup and Metal ball is discontinued due to the high complications.
  • Size of the acetabular cup is same as the size of acetabular but size of the Femoral head can be variable. Large size head gives better movement and decreases chances of hip dislocation.

• Cemented Total Hip Replacement

Day 1: Exercises in bed

Day 2/3: Walking full weight bearing hip, knee & ankle exercises

• Uncemented Total Hip Replacement

Non-Wt. bearing walking For 3 weeks

PWB walking Next 3 weeks

FWB 6 weeks after surgery

Weight bearing can be started earlier if the component fitting is good.

Can be done: Walking, stair climbing/going down to staircase, driving, bicycle riding, certain forms of dancing.

Avoid: Jumping/jogging, sitting cross-legged, squatting

It is a planned surgery usually done under spinal and epidural anaesthesia.

It takes approximately 1½ - 2 hours.

Usually, blood is not required unless patient’s hemoglobin is low, to begin with.

If epidural analgesia is given, post-surgical pain is negligible.

Diabetes, High Blood Pressure and Heart Disease are not contraindications for THR.

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