Q. What metal is used in bone replacement?
The metals that are used in orthopedic implants are stainless steel, cobalt-based alloys, and titanium. Stainless steel is often used to replace structures that have naturally degraded or have incurred trauma. One example is replacing bone tissue that has worn down due to osteoporosis.
Q. Which metal is used for artificial joints in human body?
The most common traditional metals used for THA are stainless steels, titanium alloys (Ti6Al4V) and—mainly—cobalt-chromium-molybdenum alloys. The latter have good corrosion resistance compared to other metals, and high toughness, high wear resistance and higher hardness (HV = 350) than other metals and polymers.
Q. What are bone replacements made of?
Implant Components Implants are made of metal alloys, ceramic material, or strong plastic parts. Up to three bone surfaces may be replaced in a total knee replacement: The lower end of the femur. The metal femoral component curves around the end of the femur (thighbone).
Q. What are artificial hip joints made of?
The most popular artificial hip joint is a bearing couple composed of a cross-linked polyethylene (CLPE) acetabular cup, cobalt–chromium–molybdenum (Co–Cr–Mo) alloy, and toughened zirconia or alumina–ceramic femoral head.
Q. What is better metal or ceramic hip replacement?
Research shows that ceramic hip replacements may be preferable to metal or plastics, as ceramic is more durable and may last longer. There are some limitations for ceramic materials, including a risk of fracture during implant. Improvements in modern materials have made fractures less of a concern today.
Q. What is the best exercise after total hip replacement?
Strengthening
- Ankle pumps.
- Thigh squeezes (quadriceps sets)
- Buttock squeezes (gluteal sets)
- Heel slides (hip and knee flexion)
- Leg slides (abduction/adduction)
- Lying kicks (short arc quadriceps)
- Straight leg raises.
- Sitting kicks (long arc quadriceps)
Q. Can I kneel down after hip replacement?
After a hip replacement many patients can kneel down after completing the precautionary period of three months. The safe way to do this is to perform a single-legged kneel whereby the patient kneels on the knee of the operated side only. This means that the other hip has to bend whilst the operated hip stays extended.
Q. How long does it take for soft tissue to heal after hip replacement?
In general, most surgeons prefer that you avoid certain positions of the hip that can increase your risk of dislocation of the hip for about 6 weeks following surgery. After 6 weeks the soft tissues involved in the surgery have healed and restrictions are often lifted allowing more vigorous activity.
Q. What should I be able to do 4 weeks after a hip replacement?
Most patients can expect to be using crutches for around four weeks, but often turn the corner after this and start phasing this out as they progress. By the time you have a follow-up with your consultant after six weeks, you will be walking around the house unaided and will be feeling largely back to normal.
Q. When can I sit on a normal chair after hip replacement?
For at least the first 3 months, sit only in chairs that have arms. Do not sit on low chairs, low stools, or reclining chairs. Do not cross your legs at the knees. The physical therapist will show you how to sit and stand from a chair, keeping your affected leg out in front of you.
