Knee replacement

Knee replacement
Other namesKnee arthroplasty
ICD-10-PCS0SRD0JZ
ICD-9-CM81.54
MeSHD019645
MedlinePlus002974
eMedicine1250275

Knee replacement, also known as knee arthroplasty, is a surgical procedure to replace the weight-bearing surfaces of the knee joint to relieve pain and disability, most commonly offered when joint pain is not diminished by conservative sources.[1][2] It may also be performed for other knee diseases, such as rheumatoid arthritis. In patients with severe deformity from advanced rheumatoid arthritis, trauma, or long-standing osteoarthritis, the surgery may be more complicated and carry higher risk. Osteoporosis does not typically cause knee pain, deformity, or inflammation, and is not a reason to perform knee replacement.

Knee replacement surgery can be performed as a partial or a total knee replacement.[3] In general, the surgery consists of replacing the diseased or damaged joint surfaces of the knee with metal and plastic components shaped to allow continued motion of the knee.

The operation typically involves substantial postoperative pain and includes vigorous physical rehabilitation. The recovery period may be 12 weeks or longer and may involve the use of mobility aids (e.g. walking frames, canes, crutches) to enable the patient's return to preoperative mobility.[4] It is estimated that approximately 82% of total knee replacements will last 25 years.[5]

  1. ^ Zhang WC, Xiao D (November 2020). "Efficacy of proprioceptive training on the recovery of total joint arthroplasty patients: a meta-analysis". Journal of Orthopaedic Surgery and Research. 15 (1): 505. doi:10.1186/s13018-020-01970-6. PMC 7640714. PMID 33143719.
  2. ^ Palmer SH (27 June 2012). "Total Knee Arthroplasty". Medscape Reference.
  3. ^ "Total Knee Replacement". American Academy of Orthopedic Surgeons. December 2011.
  4. ^ Leopold SS (April 2009). "Minimally invasive total knee arthroplasty for osteoarthritis". The New England Journal of Medicine. 360 (17): 1749–58. doi:10.1056/NEJMct0806027. PMID 19387017.
  5. ^ Evans JT, Walker RW, Evans JP, Blom AW, Sayers A, Whitehouse MR (February 2019). "How long does a knee replacement last? A systematic review and meta-analysis of case series and national registry reports with more than 15 years of follow-up". Lancet. 393 (10172): 655–663. doi:10.1016/S0140-6736(18)32531-5. PMC 6381229. PMID 30782341.