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PARTIAL KNEE REPLACEMENT

Why Get a Total Knee If You Only Need a Partial?

The knee is composed of three separate compartments. Osteoarthritis sometimes develops in only one compartment of the knee, while the other two compartments remain relatively healthy. Patients who have osteoarthritis in only one compartment may be candidates for partial knee replacement.

The advantage of a partial knee is that it resurfaces only the damaged cartilage of the knee, preserving the undamaged cartilage. You and your surgeon will determine if a partial knee is appropriate for you.

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What to expect before surgery

If you're a candidate for the Oxford® Partial Knee with Signature™** technology, your preoperative experience will be similar to most partial knee patients, except an MRI of your affected leg will also be required. The typical MRI scan will last approximately 20 minutes. The scan will only be performed on the hip, knee and ankle, so your head will remain outside of the machine. The MRI is used for preoperative planning by your surgeon and for the design and manufacture of the Signature™ personalized positioning guides that will be used during your partial knee replacement.

After surgery

After surgery, you will probably be hospitalized for one to three days. Recovery time varies, but most people are able to drive after two weeks, garden after three to four weeks, and golf after six to eight weeks. Your surgeon will tell you when and what activities you can return to and what activities to avoid.

If you have questions regarding the Oxford Partial Knee, please speak with an orthopedic surgeon 
or search for an Oxford Partial Knee trained surgeon in your area.

**A collaborative partnership with Materialise, N.V.

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Need assistance? Please call: 1-800 HIP-KNEE (1-800-447-5633)

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Not all patients are candidates for partial knee replacement. Only your orthopedic surgeon can tell you if you're a candidate for joint replacement surgery, and if so, which implant is right for your specific needs. You should discuss your condition and treatment options with your surgeon. The Oxford®Partial Knee is intended for use in individuals with osteoarthritis or avascular necrosis limited to the medial compartment of the knee and is intended to be implanted with bone cement. The Oxford®Knee is not indicated for use in the lateral compartment. Potential risks include, but are not limited to, loosening, dislocation, fracture, wear, and infection, any of which can require additional surgery.

Zimmer Biomet is a manufacturer of orthopedic implants and does not practice medicine. Only an orthopedic surgeon can determine what treatment is appropriate. Individual results of total joint replacement may vary. The life of any implant will depend on your weight, age, activity level, and other factors. For more information on risks, warnings, and possible adverse effects, see the Patient Risk Information section found within ZimmerBiomet.com. Always ask your doctor if you have any questions regarding your particular condition or treatment options.

Oxford® and Signature™ are trademarks of Zimmer Biomet or its subsidiaries unless otherwise indicated.

References

  1. Lombardi, A. et al. Is Recovery Faster for Mobile-bearing Unicompartmental than Total Knee Arthroplasty? Clinical Orthopedics and Related Research. 467:1450-57.2009
  2. Hopper, PG.,Leach, WJ. Participation in sporting activities following total knee replacement: total versus unicompartmental. Knee Surgery Sports Traumatology Arthroscopy.2008.16:973-979
  3. Hall et al. Unicompartmental Knee Arthroplasty (Alias Uni-Knee)-An Overview with Nursing Implications. Orthopedic Nursing. 2004; 23(3):163-171
  4. Price, AJ, et al. Simultaneous in vitro measurement of patellofemoral kinematics and forces following Oxford medial unicompartmental knee replacement. JBJS (Br). 2006; 88-B; 12: 1591-1595.
  5. Data on File. Cobb, J, et al. Functional Assessment of knee arthroplasty using an instrumented treadmill. Imperial College of London. March 8, 2012. Presentation.
  6. Argenson, J., et al. Polyethylene Wear in Meniscal Knee Replacement. A One to Nine-year Retrieval. Analysis of the Oxford Knee. The Journal of Bone and Joint Surgery. 1992; 74-B(2):228-32.
  7. Ng, VY, et al. Improved Accuracy of Alignment With Patient Specific Positioning Guides Compared with Manual Instrumentation in TKA. Clinical Orthopaedics and Related Research. August 2011. Published Online.
  8. Murray, D. et al. The Oxford Medial Unicompartmental Arthroplasty. A Ten-Year Survival Study. Journal of Bone and Joint Surgery. 80:983-989. 1998
  9. Keys, G. et al. Analysis of First Forty Oxford Medial Unicompartmental Knee Replacements from a Small District Hospital in UK. Knee. 11:375-377. 2004.
  10. Rajasekhar, C. et al. Unicompartmental Knee Arthroplasty. 2-to12-year Results in a Community Hospital. Journal of Bone and Joint Surgery Br. 86:983-985. 2004.
  11. Price AJ, Svard U.:A second decade lifetable survival analysis of the Oxford unicompartmental knee arthroplasty. Clin Orthop RelatRes. 2011 Jan; 469(1): 174-9
  12. Emerson RH Jr, Higgins LL. Unicompartmental knee arthroplasty with the Oxford prosthesis in patients with medial compartment arthritis. J Bone Joint Surg Am. 2008 Jan; 90(1): 118-22.
  13. Svard, U. and Price, A. Oxford Medial 1. Unicompartmental Knee Arthroplasty. A Survival Analysis of an Independent Series. Journal of Bone and Joint Surgery Br. 83:191-194. 2001.
  14. Price, A. et al. Long-term Clinical Results of the Medial Oxford Unicompartmental Knee Arthroplasty. Clinical Orthopedics and Related Research. 435:171-180. 2005
  15. Cobb, JP, et al. Unicondylar knee arthroplasty in ht eUK National Health Service: An analysis of candidacy, outcome and cost efficacy. ScienceDirect. TheKnee 16.473-478. 2009
  16. Brown, NM, et al. Total Knee Arthroplasty Has Higher Postoperative Morbidity Than Unicompartmental Knee Arthroplasty: A Multicenter Analysis. The Journal of Arthroplasty. (2012)
  17. Robertsson, O, et al. Use of unicompartmental instead of tricompartmental prostheses for unicompartmental arthrosis in the knee is a cost effective alternative. Acta Orthrop Scand. (1999); 70(2): 170-175.