What is PS knee?

Posterior-stabilized implants attempt to replace the role of the PCL with a polyethylene post and femoral cam that interact to prevent anterior translation of the femur on the tibia, while allowing femoral rollback during flexion.

What is PS and CR?

The World Only Needs CR (Cruciate Retaining) and PS (Posterior Stabilised) Knee Implants. CR (Cruciate Retaining) is a name that has been given to a knee replacement type but is a very strange choice; it is not what the implant itself provides, quite the opposite in fact.

What is S P total knee arthroplasty?

Knee replacement, also called knee arthroplasty or total knee replacement, is a surgical procedure to resurface a knee damaged by arthritis. Metal and plastic parts are used to cap the ends of the bones that form the knee joint, along with the kneecap.

What is a constrained implant?

Constraint. definition. the ability of a prosthesis to provide varus-valgus and flexion-extension stability in the face of ligamentous laxity or bone loss.

Does knee replacement remove ligaments?

A new total knee replacement that saves all of the ligaments can make a person’s knee feel and move just like the original. During a traditional total knee replacement, the surgeon must remove the “island” of bone to which the anterior cruciate ligament (ACL) and the posterior cruciate ligament (PCL) are attached.

Which implant is best for knee replacement?

The most popular type of knee replacement implant is the fixed bearing implant. The fixed bearing implants are best suited for patients who aren’t overweight and those who do not have active lifestyles.

What is replaced with a total knee replacement?

During a total knee replacement, the end of the femur bone is removed and replaced with a metal shell. The end of the lower leg bone (tibia) is also removed and replaced with a channeled plastic piece with a metal stem.

How is a TKR performed?

Knee replacement usually takes 1 to 2 hours. The surgeon removes damaged cartilage and bone from the knee. Then the doctor attaches metal implants to the ends of the thigh and calf bones. A plastic spacer goes between the metal pieces and helps the new joint move smoothly.

What happens if you don’t do physical therapy after knee replacement?

Why you shouldn’t skip physical therapy after knee surgery Supporting muscles and soft tissue can begin to atrophy due to nonuse and swelling. Increased strain can be put on the knee from improper movement. Range of motion can be diminished. The healing process can be slowed down due to lack of blood flow to the area.

What are the indications for total knee arthroplasty?

Indications General Total Knee Arthroplasty (TKA) Indications include: • Painful, disabling joint disease of the knee resulting from: non-inflammatory degenerative joint disease (including osteoarthritis, traumatic arthritis or avascular necrosis) rheumatoid arthritis or post-traumatic arthritis.

What causes knee arthroplasty or knee replacement surgery?

Knee Arthroplasty Implants Knee replacement surgery is one of the most commonly performed surgery by orthopedic surgeons. The surgery offers relief from knee pain and increases mobility. Common causes for knee pain include arthritis caused by primary osteoarthritis, rheumatoid arthritis, psoriatic arthritis, and secondary arthritis.

When to use CR or PS knee implants?

The CR implant is used mainly in knees with minimal arthritis and soft tissue laxity. The implants require a functioning posterior cruciate ligament. The posterior cruciate substituting (PS) also known as posterior stabilized implants are more commonly used than CR.

Which is the best total knee arthroplasty product?

Our total knee arthroplasty portfolio offers three different products to address patient needs and disease states. JOURNEY II TKA has been demonstrated to significantly improve flexion by enabling 23º range of motion improvement earlier in the recovery period. 3