Knee Implants

knee painIf you are looking for an alternative to knee replacement, you have come to the right place! Arthrosurface® designed its technology to help “bridge the gap” that exists between early treatments and total joint replacement surgery. The HemiCAP® and UniCAP® knee implants are technologically advanced systems that are designed to match the shape and contour of the individual patient’s joint surface. Both the HemiCAP® and UniCAP® are part of the Arthrosurface® Knee Restoration Systems but are used to treat different parts of the knee. If your damage is located on the inside or outside of your knee (the condyles), then the UniCAP® implant would be selected. If your damage is located behind your kneecap, then your doctor would select the Patello Femoral HemiCAP®. The different names help your surgeon find the best match, depending on the location of the damage in your knee.

Your surgeon expects the knee implants to last as long as similar metallic devices but it will depend on your general health, activity level, and adherence to your doctor’s orders following surgery. Currently over 40,000 patients have been treated with Arthrosurface® implants and some have been in place for as long as 10 years already.

How are the HemiCAP® and UniCAP® different than other existing devices?

  • Little to no activity restrictions making the Arthrosurface implants an active alternative to knee replacement
  • It is custom matched and fit to a patient’s joint size and shape
  • Significantly less cartilage and bone is removed than traditional joint replacements
  • It is placed into the surface rather than on top, leaving the joint less surgically altered
  • Joint motion and the native structures are preserved so no bridges are burned

knee replacement

A Total Knee Replacement (Left) vs the Arthrosurface Knee UniCAP® Solution (Right)

With the Arthrosurface® Joint Restoration Systems, the surgeon only resurfaces the damaged area, similar to the way a dentist fills in a cavity. This leaves the rest of the structures in your joint intact so your native anatomy is preserved. The exposed and painful bone is covered while all the structures in your joint help you move and function properly are left in place. For example, if you received an Arthrosurface knee implant, your ACL and PCL would NOT be touched or removed, unlike if you were to have a total knee replacement. By keeping the ACL and PCL, the HemiCAP® and UniCAP® systems will allow you to have a knee that feels normal and pain free.

There is minimal bone removed with the HemiCAP® and UniCAP® knee implants, while existing joint replacements surgically remove the entire bone surface (on both sides of the joint). This means there is far less of the natural bone to work with if future surgery is required. The HemiCAP® and UniCAP® systems leave more bone intact, providing more options should future surgery be required.

Are you a candidate for a HemiCAP or UniCAP?

  • Aged 35 to 75 years old
  • Want to regain your active lifestyle
  • You have had a microfracture treatment or injections, but the pain has returned
  • You cannot afford lengthy rehabilitation time or excessive time off work
  • You want to fix your knee problem now versus waiting for your knee to undergo further damage
  • Your surgeon has told you that you will need a knee replacement in the future

Surgical and Recovery Expectations

knee replacement alternativesHemiCAP® technology was designed as an alternative to knee replacement for patients who want to continue working, have more active lifestyles and have a need for joint preserving treatments. Many of these patients are looking for a treatment option that “bridges the gap” between microfracture/injections and total joint replacement.

Patients report outstanding pain relief, rapid recovery times and significant range of motion improvements in multi-center studies and the procedure may be performed on outpatient basis.

Every surgery has risks and your prospects for a safe and successful surgery must be evaluated with your surgeon. If you are affected by osteoarthritis or cartilage damage caused by a previous injury, a successful joint restoration procedure may significantly improve your quality of life by reducing pain and restoring function. Many patients return to full activity after rehabilitation and go back to doing things that they had given up on in the years before surgery.

After the surgical repair of a joint, your surgeon will provide you with specific post-operative instructions which you need to follow carefully. Post-operative rehabilitation recommendations will vary depending on the invasiveness of your surgery and your individual recovery patterns. The immediate focus in all surgeries will be on swelling and pain management. In some cases you may wear a brace for a few weeks and will be prescribed exercises and activities to strengthen your muscles.

knee replacement optionsHere are a few helpful suggestions as you recover and rehabilitate from your knee surgery:

  • Follow the recommendations of your surgeon and physical therapist.
  • Keep a log to track your progress as you recover and increase activity.
  • Ask for assistance from family and friends to help with chores and errands during your recovery.
  • Walking aids such as crutches or a walker may reduce stress on your operated knee.
  • Wear loose, comfortable clothing during your recovery period.
  • Eliminate possible tripping hazards in your home – wires, cables, rugs, etc.
  • Elevation of seating arrangements, including the toilet seat, may help in reducing stress to your knee.
  • Return to any moderate or demanding activities should be guided by your tolerance for weight bearing.

We wish you good luck with your decision and your treatment.

Questions to ask your doctor

  • Will my joint feel normal and move naturally after I have the surgery?
  • Will you remove my ACL?
  • Is my cartilage damage localized?
  • Is the alignment of my joint close to normal?
  • Is my joint unstable?
  • Do I have any joint space remaining?
  • How long will I be hospitalized?
  • Can the procedure be performed on an outpatient basis?
  • Will the recovery take weeks or months?
  • Can I go back to all my previous sports and activities?

knee replacement surgery

knee surgery

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knee implants


NEWs / updates / blog

  • Quick Facts

    • Little to no activity restrictions making the implants an active alternative to joint replacement.
    • The HemiCAP™ Implants are custom matched and fit to a patient’s joint size and shape.
    • Significantly less cartilage and bone is removed than traditional total joint replacements.
    • It is placed into the surface rather than on top, leaving the joint less surgically altered.
    • Rock-Solid Fixation between the Fixation Component & Cap. No Reported Loosening.
    • Allows patients to Stay Active. Alternative to Knee Replacement
    • Shortened Recovery Time means less time out of work and getting your life back sooner.
    • Can be performed as an Outpatient procedure to avoid long hospital stays and large hospital bills.
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