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| | __NOTOC__ |
| | '''For patient information, click [[Knee pain/swelling (patient information)|here]]''' |
| {{Infobox_Disease | | | {{Infobox_Disease | |
| Name = {{PAGENAME}} | | | Name = {{PAGENAME}} | |
| Image = Knee swelling in osteosarcoma.jpg| | | Image = Knee swelling in osteosarcoma.jpg| |
| Caption = | | | Caption = | |
| DiseasesDB = |
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| ICD10 = |
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| ICD9 = |
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| ICDO = |
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| OMIM = |
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| MedlinePlus = |
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| eMedicineSubj = |
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| eMedicineTopic = |
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| MeshID = |
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| }} | | }} |
| {{SI}} | | {{Knee pain/swelling}} |
| {{CMG}} | | {{CMG}} |
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| | ==[[Knee pain/swelling overview|Overview]]== |
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| | ==[[Knee pain/swelling historical perspective|Historical Perspective]]== |
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| The most common reasons of knee pain can include;
| | ==[[Knee pain/swelling classification|Classification]]== |
| ==Differential diagnosis of knee pain/swelling== | |
| ===Common causes===
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| ====Acute knee pain====
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| * Ligament injuries
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| * Tendon injuries ([[tendinitis]])
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| * Meniscus injuries
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| * Loose body
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| * Dislocated kneecap
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| * [[Osgood-Schlatter disease]]
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| * [[Iliotibial band syndrome]]
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| * Hyperextended knee
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| * [[Septic arthritis]]
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| ====Chronic knee pain==== | | ==[[Knee pain/swelling pathophysiology|Pathophysiology]]== |
| * [[Rheumatoid arthritis]]
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| * [[Osteoarthritis]]
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| * [[Gout]]
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| * [[Chondromalacia]] of the [[patella]], or patellofemoral pain
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| ===Causes by Organ System=== | | ==[[Knee pain/swelling causes|Causes]]== |
| {|style="width:80%; height:100px" border="1"
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| |style="height:100px"; style="width:25%" border="1" bgcolor="LightSteelBlue" | '''Cardiovascular'''
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| |style="height:100px"; style="width:75%" border="1" bgcolor="Beige" | No underlying causes
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| |-
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| |-bgcolor="LightSteelBlue"
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| | '''Chemical / poisoning'''
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| |bgcolor="Beige"| No underlying causes
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| |- | |
| |-bgcolor="LightSteelBlue"
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| | '''Dermatologic'''
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| |bgcolor="Beige"| No underlying causes
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| |-
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| |-bgcolor="LightSteelBlue"
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| | '''Drug Side Effect'''
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| |bgcolor="Beige"| No underlying causes
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| |-
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| |-bgcolor="LightSteelBlue"
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| | '''Ear Nose Throat'''
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| |bgcolor="Beige"| No underlying causes
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| |-
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| |-bgcolor="LightSteelBlue"
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| | '''Endocrine'''
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| |bgcolor="Beige"| No underlying causes
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| |-
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| |-bgcolor="LightSteelBlue"
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| | '''Environmental'''
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| |bgcolor="Beige"| No underlying causes
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| |-
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| |-bgcolor="LightSteelBlue"
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| | '''Gastroenterologic'''
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| |bgcolor="Beige"| No underlying causes
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| |-
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| |-bgcolor="LightSteelBlue"
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| | '''Genetic'''
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| |bgcolor="Beige"| No underlying causes
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| |-
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| |-bgcolor="LightSteelBlue"
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| | '''Hematologic'''
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| |bgcolor="Beige"| No underlying causes
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| |-
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| |-bgcolor="LightSteelBlue"
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| | '''Iatrogenic'''
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| |bgcolor="Beige"| No underlying causes
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| |-
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| |-bgcolor="LightSteelBlue"
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| | '''Infectious Disease'''
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| |bgcolor="Beige"| No underlying causes
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| |-
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| |-bgcolor="LightSteelBlue"
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| | '''Musculoskeletal / Ortho'''
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| |bgcolor="Beige"| No underlying causes
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| |-
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| |-bgcolor="LightSteelBlue"
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| | '''Neurologic'''
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| |bgcolor="Beige"| No underlying causes
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| |-
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| |-bgcolor="LightSteelBlue"
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| | '''Nutritional / Metabolic'''
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| |bgcolor="Beige"| No underlying causes
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| |-
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| |-bgcolor="LightSteelBlue"
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| | '''Obstetric/Gynecologic'''
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| |bgcolor="Beige"| No underlying causes
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| |-
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| |-bgcolor="LightSteelBlue"
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| | '''Oncologic'''
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| |bgcolor="Beige"| No underlying causes
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| |-
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| |-bgcolor="LightSteelBlue"
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| | '''Opthalmologic'''
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| |bgcolor="Beige"| No underlying causes
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| |-
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| |-bgcolor="LightSteelBlue"
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| | '''Overdose / Toxicity'''
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| |bgcolor="Beige"| No underlying causes
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| |-
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| |-bgcolor="LightSteelBlue"
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| | '''Psychiatric'''
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| |bgcolor="Beige"| No underlying causes
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| |-
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| |-bgcolor="LightSteelBlue"
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| | '''Pulmonary'''
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| |bgcolor="Beige"| No underlying causes
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| |-
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| |-bgcolor="LightSteelBlue"
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| | '''Renal / Electrolyte'''
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| |bgcolor="Beige"| No underlying causes
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| |-
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| |-bgcolor="LightSteelBlue"
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| | '''Rheum / Immune / Allergy'''
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| |bgcolor="Beige"| No underlying causes
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| |-
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| |-bgcolor="LightSteelBlue"
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| | '''Sexual'''
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| |bgcolor="Beige"| No underlying causes
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| |-
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| |-bgcolor="LightSteelBlue"
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| | '''Trauma'''
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| |bgcolor="Beige"| No underlying causes
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| |-
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| |-bgcolor="LightSteelBlue"
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| | '''Urologic'''
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| |bgcolor="Beige"| No underlying causes
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| |-
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| |-bgcolor="LightSteelBlue"
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| | '''Dental'''
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| |bgcolor="Beige"| No underlying causes
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| |-
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| |-bgcolor="LightSteelBlue"
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| | '''Miscellaneous'''
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| |bgcolor="Beige"| No underlying causes
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| |-
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| |}
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| === Complete differential diagnosis of causes of knee pain/sweling=== | | ==[[Knee pain/swelling differential diagnosis|Differentiating Knee pain/swelling from Other Diseases]]== |
| * Acute [[gouty arthritis]]
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| * [[Still's Disease|Adult Still's Disease]]
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| * [[Anterior cruciate ligament]] ([[ACL]]) injury
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| * [[Baker's cyst]]
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| * Bone, ligament or cartilage damage
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| * [[Bursitis]]
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| * [[Chondromalacia patellae]]
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| * Chronic [[gouty arthritis]]
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| * Discoid [[meniscus]]
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| * [[Gonococcemia]]
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| * Hip or foot/ankle disease with referred pain to the knee
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| * [[Iliotibial Band Syndrome]]
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| * Joint effusion
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| * Joint infection
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| * [[Lateral collateral ligament]] ([[LCL]]) injury
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| * [[Malignancy]]
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| * [[Medial collateral ligament]] ([[MCL]]) injury
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| * [[Meniscus]] tear
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| * [[Osgood-Schlatter Disease]]
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| * [[Osteoarthritis]]
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| * [[Osteochondritis Dissecans]] (OCD)
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| * [[Osteomyelitis]]
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| * [[Osteosarcoma]]
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| * [[Patellofemoral syndrome]]
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| * Pes [[anserine bursitis]]
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| * [[Posterior cruciate ligament]] ([[PCL]]) injury
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| * [[Pseudogout]]
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| * [[Psoriatic arthritis]]
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| * [[Reiter's Syndrome]]
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| * [[Rheumatoid Arthritis]]
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| * [[Scleroderma]]
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| * [[Systemic Lupus Erythematosus]]
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| == Diagnosis == | | ==[[Knee pain/swelling epidemiology and demographics|Epidemiology and Demographics]]== |
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| === History and Symptoms === | | ==[[Knee pain/swelling risk factors|Risk Factors]]== |
| * Gait abnormalities
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| * [[Swelling]]
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| * Erythema
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| * Deformity
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| * Muscle atrophy
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| === Physical Examination === | | ==[[Knee pain/swelling natural history, complications and prognosis|Natural History, Complications and Prognosis]]== |
| * Range of motion
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| * Palpate area of concern
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| * "Milk the joint"
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| * McMurray circumduction test
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| * Ligament testing
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| == Laboratory Findings == | | ==Diagnosis== |
| * [[Complete blood count]]
| | [[Knee pain/swelling history and symptoms|History and Symptoms]] | [[Knee pain/swelling physical examination|Physical Examination]]| [[Knee pain/swelling laboratory findings|Laboratory Findings]] | [[Knee pain/swelling x ray|X Ray]] | [[Knee pain/swelling CT|CT]] | [[Knee pain/swelling MRI|MRI]] | [[Knee pain/swelling ultrasound|Ultrasound]] | [[Knee pain/swelling other imaging findings|Other Imaging Findings]] | [[Knee pain/swelling other diagnostic studies|Other Diagnostic Studies]] |
| * [[C-reactive protein]]
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| * [[Uric acid]]
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| * [[Alkaline phosphatase]]
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| * [[Erythrocyte sedimentation rate]] ([[ESR]])
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| === X-Ray === | | ==Treatment== |
| * Anteroposterior, lateral and merchant (or sunrise) films of both knees
| | [[Knee pain/swelling medical therapy|Medical Therapy]] | [[Knee pain/swelling surgery|Surgery]] | [[Knee pain/swelling primary prevention|Primary Prevention]] | [[Knee pain/swelling cost-effectiveness of therapy|Cost-Effectiveness of Therapy]] | [[Knee pain/swelling future or investigational therapies|Future or Investigational Therapies]] |
| * Tunnel views of knee
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| * Merchant and sunrise of the patella
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| === MRI and CT === | | == Case Studies == |
| * MRI for confirmation of suspected diagnosis
| | [[Knee pain/swelling case study one|Case #1]] |
| | | {{WH}} |
| === Other Diagnostic Studies ===
| | {{WS}} |
| * Bone scan
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| * Joint aspiration
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| == Treatment ==
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| * Conservative therapy is best
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| * Lifestyle changes
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| * Physical therapy
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| * Exercise
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| == Pharmacotherapy ==
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| === Acute Pharmacotherapies ===
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| * Anti-inflammatory medications
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| * Joint medications
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| * Antibiotics
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| == Surgery and Device Based Therapy ==
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| * Surgery necessary for most ACL injuries
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| * Meniscal tears may require surgical repair
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| * Joint infection requires surgery (emergency)
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| * Surgery may be necessary for osteoarthritis, if conservative treatment fails
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| == References ==
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| {{Reflist|2}} | |
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| [[Category:Musculoskeletal Disease]] | | [[Category:Musculoskeletal Disease]] |
| | [[Category:Symptoms]] |
| [[Category:Signs and symptoms]] | | [[Category:Signs and symptoms]] |
| | [[Category:Medical signs]] |
| [[Category:Orthopedics]] | | [[Category:Orthopedics]] |
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