Rheumatology Book

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Knee OsteoarthritisAka: Knee Degenerative joint disease, Knee DJD

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  1. See Also
    1. Knee Osteoarthritis
    2. Knee Osteoarthritis Management
  2. Risks
    1. Obesity (Body Mass Index >30 mg/kg)
    2. Occupation
      1. Prolonged squatting or kneeling
      2. Lifting more than 25 kg regularly
      3. Walking more than 2 miles per day
  3. Symptoms
    1. Less than 30 minutes of morning knee stiffness
    2. Chronic progressive Knee Pain
    3. Mild joint swelling
    4. Crepitation on knee range of motion
    5. Provocative
      1. Standing or weight bearing
      2. Stair climbing
    6. Palliative
      1. Rest
  4. Signs
    1. Mild Knee Effusion
    2. Minimal synovial thickening
    3. Atrophy of muscles surrounding knee
    4. Restricted knee range of motion (active and passive)
  5. Diagnostic Criteria (American College Rheumatology)
    1. Knee Pain with osteophytes on XRay and
    2. One of the following
      1. Crepitus on knee range of motion
      2. Age 50 years or older
      3. Morning stiffness of short duration (<30 minutes)
    3. Altman (1986) Arthritis Rheum 33:1039
  6. Labs
    1. Synovial Fluid examination
      1. Indication: Nontraumatic monarticular effusion
      2. Findings
        1. White Blood Cells <200 per mm3 (<2000 in a flare)
        2. Fluid color is clear and minimally turbid
    2. Rheumatologic evaluation
      1. See Osteoarthritis
  7. Radiology: Knee XRay
    1. See Knee XRay in Osteoarthritis
  8. Management
    1. See Knee Osteoarthritis Management
  9. Referral Indications
    1. Systemic Rheumatic disease
    2. Significant functional deterioration
    3. Septic Arthritis or Osteomyelitis
    4. Primary malignancy or metastases
    5. Safety concerns (e.g. recurrent falls)
    6. Pain and Disability refractory to conservative care
  10. References
    1. Coggon (2000) Arthritis Rheum 43:1443
    2. (1997) Postgrad Med 102(5):167

Osteoarthritis, Knee (C0409959)

Definition (MSH)Noninflammatory degenerative disease of the knee joint consisting of three large categories: conditions that block normal synchronous movement, conditions that produce abnormal pathways of motion, and conditions that cause stress concentration resulting in changes to articular cartilage. (Crenshaw, Campbell's Operative Orthopaedics, 8th ed, p2019)
ConceptsDisease or Syndrome (T047)
MSHD020370
BasqueGONARTROSIA
DanishKnaeledsartrose
DutchGonarthrosis
EnglishDegenerative joint disease of knee, Knee DJD, Knee Osteoarthritides, Knee Osteoarthritis, OA - Osteoarthritis of knee, Osteoarthritis of knee
FinnishPOLVEN KULUMA
FrenchGonarthrose
GermanGonarthrose
Hebrewostioartritis shel haberex
Hungarianterdizuleti arthrosis
ItalianOsteoartrosi del ginocchio
NorwegianKNELEDDSARTROSE
PortugueseOsteoartrose do joelho
Spanishartrosis de la rodilla, Artrosis de rodilla, artrosis rotuliana
SwedishKNALEDSARTROS
Parent ConceptsMusculoskeletal (C0497254), Diagnosis/Diseases Component (C0497531), Degenerative polyarthritis (C0029408), Arthropathies NOS (C0022408), Osteoarthritis, Knee (C0409959), Knee joint finding (C0576085), Disorder of knee (C1290879), Duplicate concept (C1274013)
SourcesICPC, ICPCBAQ, ICPCDAN, ICPCDUT, ICPCFIN, ICPCFRE, ICPCGER, ICPCHEB, ICPCHUN, ICPCITA, ICPCNOR, ICPCPOR, ICPCSPA, ICPCSWE, MSH, MTH, NDFRT, OMIM, SCTSPA, SNOMEDCT
Derived from the NIH UMLS (Unified Medical Language System)



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