Total Hip Replacement

Hip replacement surgery is one of the most successful orthopaedic procedures for relieving pain and restoring mobility in patients with severe hip joint damage. One of the most common questions patients ask before surgery is: “What type of hip replacement implant will be used for me?” Understanding the different types of hip replacement implants helps patients make informed decisions and builds confidence in the treatment plan recommended by their surgeon. This guide explains the main types of hip replacement implants, how they work, and how surgeons choose the most suitable option for each patient. What Is a Hip Replacement Implant? A hip replacement implant is an artificial prosthesis designed to replace a damaged hip joint. The hip is a ball-and-socket joint, and during surgery: The damaged femoral head (ball) is replaced with a metal or ceramic ball • The damaged hip socket is replaced with an artificial cup • A stem is inserted into the thigh bone to support the new joint The goal is to reduce pain, improve movement, and restore quality of life. Types of Hip Replacement Implants Based on Fixation 1. Cemented Hip Implants In cemented hip replacement, the implant is fixed to the bone using special bone cement. Best suited for: • Elderly patients • Patients with weaker or osteoporotic bones Advantages: • Immediate strong fixation • Faster initial stability Limitations: • Cement may loosen over time in very active patients 2. Uncemented (Cementless) Hip Implants Uncemented implants rely on natural bone growth to attach to the implant surface. Best suited for: • Younger or active patients • Patients with good bone quality Advantages: • Long-term biological fixation • Lower risk of loosening over time Limitations: • Takes time for bone to grow into the implant 3. Hybrid Hip Implants Hybrid hip replacement uses cemented fixation on one side and uncemented on the other. Best suited for: • Patients with mixed bone quality • Cases where customised fixation is needed Types of Hip Replacement Implants Based on Bearing Surface 4. Metal-on-Polyethylene This has been the most commonly used implant combination worldwide. Features: • Metal ball • High-quality plastic (polyethylene) socket liner Advantages: • Proven long-term results • Cost-effective • Suitable for most patients 5. Ceramic-on-Polyethylene Here, a ceramic ball is used with plastic liner. It’s the most recommended combination nowadays. Advantages: • Lower wear compared to metal • Reduced risk of inflammation • Ideal for active patients 6. Ceramic-on-Ceramic Both the ball and socket are made of ceramic. Advantages: • Extremely low wear • Longer implant lifespan Limitations: • Higher cost • Rare risk of noise (squeaking) 7. Metal-on-Metal (Rarely Used Now) This type is now largely avoided due to safety concerns. Why it’s less common: • Metal ion release • Risk of tissue reactions Most modern surgeons prefer safer alternatives. Types of Hip Replacement Implants Based on Surgery Type 8. Total Hip Replacement (THR) Both the ball and socket are replaced. Recommended for: • Advanced arthritis • Severe joint damage • Long-term pain relief 9. Partial Hip Replacement Only the femoral head is replaced. Recommended for: • Certain hip fractures • Elderly patients with limited joint damage 10. Revision Hip Replacement Implants Used when a previous hip implant fails or wears out. Requires: • Specialised implants • High surgical expertise How Is the Right Hip Implant Chosen? Choosing the right hip replacement implant depends on several patient-specific factors: Age and activity level • Bone quality • Lifestyle and occupation • Medical conditions • Previous surgeries An experienced joint replacement surgeon evaluates all these factors before recommending the best implant. Expert Insight from an Orthopaedic Specialist Dr. Vinayak Ghanate, a Fellowship-trained orthopaedic surgeon and certified specialist in hip and knee reconstruction. Dr. Ghanate is a Fellow of the Royal College of Surgeons of Edinburgh (FRCS – Trauma & Orthopaedics) and has undergone advanced training in the UK, including rotations at Princess of Wales Hospital and Kettering General Hospital. He has extensive experience in primary, revision, and robotic joint replacement surgeries, along with trauma, sports injuries, and bone infection management. His international training and fellowship experience allow him to select evidence-based, patient-specific implant solutions for optimal long-term outcomes. Final Thoughts There is no “one-size-fits-all” hip replacement implant. The best results come from: Choosing the right implant • Skilled surgical technique • Proper post-operative care If you’re considering hip replacement surgery, consult a qualified orthopaedic surgeon who can guide you based on your age, lifestyle, and medical needs. A well-chosen implant, combined with expert surgical care, can help you return to an active and pain-free life.

For advanced AVN cases where the hip joint is severely damaged, Total Hip Replacement (THR) is the most effective treatment. THR involves replacing the damaged femoral head and acetabulum (hip socket) with artificial components, restoring function and relieving pain. When is THR Needed in AVN Hip? Persistent and severe hip pain that limiting daily activities Loss of mobility despite non-surgical treatments Significant joint damage visible on X-rays and MRI Failure of conservative treatments like core decompression or medication The THR Procedure Preoperative Evaluation – A specialist trained in Hip Replacement will assess your surgical fitness and make a plan for THR. Specialist will also discuss suitable implant options for you. Surgery – The damaged hip joint is replaced with a prosthetic made of metal, ceramic, and plastic components. Different approaches are used for THR (minimal invasive, Supra-path, Direct Anterior, Posterior) all give successful and good results after surgery. Recovery and Rehabilitation – Physical therapy begins soon after surgery to restore strength, mobility, and flexibility. Benefits of THR THR is considered as one of the most successful surgeries currently available for Hip issues Significant pain relief Improved mobility and quality of life Able to joint back to work Long-lasting results with modern implants lasting 15-20 years Preventing AVN After COVID-19 While not all cases of AVN can be prevented, some proactive measures include: Monitoring Steroid Use – If steroids are necessary, they should be used in the lowest effective dose and for the shortest duration. Regular Exercise and Healthy Diet – Maintaining bone health through proper nutrition and weight management. Routine Medical Check-ups – Early imaging for individuals with prolonged joint pain after COVID-19. Managing Blood Clot Risks – Using anticoagulants if recommended by a doctor. Avascular Necrosis of the hip is a serious but often overlooked complication following COVID-19. When AVN progresses to advanced stages, Total Hip Replacement (THR) becomes the best option for restoring mobility and eliminating pain. Awareness, early detection, and timely intervention are key to preventing long-term disability. If you or someone you know is experiencing persistent hip pain after COVID-19, seeking medical evaluation promptly can make a significant difference in treatment outcomes.