Partial knee replacement offers option to total knee
Within two weeks of partial knee replacement surgery, many patients are freed of walkers and crutches and showing little evidence of surgery — including walking without a limp.
Doctors say the benefits of the procedure — approved by the FDA in 2004 — include a quicker rehabilitation, the use of a minimally-invasive technique and, in the end, a more ‘normal’ feeling knee. In addition, results have indicated that it’s as durable as a total knee replacement, lasting about 12 to 15 years.
The biggest benefit of a partial knee replacement, however, is keeping the ACL intact. With the ACL in place, the knee joint is held snugly together so the knee feels normal. In a total knee replacement surgery, the ACL is sacrificed.
Typically, partial knee replacement patients spend 24 to 36 hours in the hospital, followed by physical therapy for a few weeks.
The Oxford® Partial Knee System was developed by surgeons in Oxford, England, along with engineers at Indiana-based Biomet. Used in Europe for 20 years, it features a free-floating artificial meniscal bearing plastic cushion that is designed to closely mimic natural knee movement. It is this feature that lessens wear and improves durability.
Eligible patients must have arthritis chiefly confined to the inside (medial) part of the knee, and have an intact ACL. The procedure is particularly well-suited for the elderly patient, because there is little down time and and recovery is quicker. The Oxford knee may also be an option for some heavier patients, who traditionally could not be considered for a partial knee replacement. Less likely to qualify are patients with “fairly severe” osteoporosis.
Surgeons estimate that one-third to one-quarter of all knee replacement patients may be candidates, and the early results are encouraging.
In the United States, some 300,000 knee replacement surgeries are performed each year.
For a physician referral, or for more information, call the Baptist East Information Center at (502) 897-8131.