Total Hip Replacement
Total Hip Replacement is a surgical procedure in which a damaged or diseased hip joint is replaced with an artificial joint (prosthesis).
The hip joint is a ball-and-socket joint, where the head of the femur (thigh bone) fits into the acetabulum (hip socket of the pelvis).
What is Total Hip Replacement (THR)
Total Hip Replacement is a surgical procedure in which a damaged or diseased hip joint is replaced with an artificial joint (prosthesis). The hip joint is a ball-and-socket joint, where the head of the femur (thigh bone) fits into the acetabulum (hip socket of the pelvis). When this joint becomes severely damaged due to arthritis, injury, or degeneration, the surgeon removes the damaged bone and cartilage and replaces them with artificial components made of metal, ceramic, or durable plastic.
This surgery helps relieve pain, restore mobility, and improve the quality of life in patients with severe hip joint problems.
Types of Total Hip Replacement
- Cemented Total Hip Replacement
- Cementless Total Hip Replacement
- Hybrid Total Hip Replacement
- Reverse Hybrid Hip Replacement
1. Cemented Total Hip Replacement
In this procedure, a special surgical bone cement is used to fix the artificial joint components to the bone.
Features
- Immediate strong fixation
- Commonly used in elderly patients with weaker bones
- Faster recovery in some cases
Advantages
- Stable fixation
- Suitable for patients with osteoporosis
2. Cementless (Uncemented) Total Hip Replacement
In this technique, the prosthesis is designed with a porous surface that allows the patient’s bone to grow into it naturally.
Features
- No bone cement used
- Bone gradually grows and attaches to the implant
- More common in younger or active patients
Advantages
- Long-lasting fixation
- Better for strong bone quality
3. Hybrid Total Hip Replacement
This method combines both techniques.
Features
- One component is cemented
- The other component is cementless
Example:
- Cemented femoral stem + cementless acetabular cup.
Advantages
- Provides balanced fixation
- Useful for patients with mixed bone quality
4. Reverse Hybrid Hip Replacement
This is the opposite of hybrid replacement.
Features
- Cementless femoral stem
- Cemented acetabular component
Used in selected clinical situations depending on bone structure.
Components of a Hip Replacement Implant
A total hip prosthesis generally has four parts:
- Acetabular Cup – Artificial socket placed in the pelvis
- Femoral Stem – Metal stem inserted into the thigh bone
- Femoral Head – Ball that replaces the natural femoral head
- Liner – Plastic or ceramic insert between the ball and socket
Common materials include:
- Titanium
- Cobalt-chromium metal
- Ceramic
- Highly cross-linked polyethylene plastic
Conditions That May Require Total Hip Replacement
Doctors may recommend this surgery when conservative treatments fail for conditions such as:
- Severe osteoarthritis
- Rheumatoid arthritis
- Hip fractures
- Avascular necrosis
- Congenital hip deformities
- Post-traumatic arthritis
- Advanced hip joint damage
Symptoms Indicating the Need for Hip Replacement
Patients may experience:
- Severe hip pain during walking or activity
- Pain even while resting
- Stiffness in the hip joint
- Difficulty climbing stairs
- Limited range of motion
- Difficulty standing or walking
Diagnosis Before Surgery
Doctors use several methods to confirm the need for hip replacement:
- Physical examination
- X-ray imaging
- MRI or CT scan
- Blood tests (to rule out infection)
- Assessment of joint mobility and pain
Benefits of Total Hip Replacement
- Significant pain relief
- Improved joint mobility
- Better walking ability
- Improved quality of life