Arthritis - Revision history

Danbot: Add verified PubMed reference (PMID 28366221)

2026-03-22T10:49:49Z

Add verified PubMed reference (PMID 28366221)

← Older revision		Revision as of 10:49, 22 March 2026
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	==Background==		==Background==
	*Arthritis refers to joint inflammation, characterized by pain, swelling, warmth, and decreased range of motion		*Arthritis refers to joint inflammation, characterized by pain, swelling, warmth, and decreased range of motion<ref>Ross JJ. Septic Arthritis of Native Joints. Infect Dis Clin North Am. 2017 Jun;31(2):203-218. PMID 28366221</ref>
	*The primary EM concern is ruling out '''[[septic arthritis]]''', which is a joint emergency requiring urgent drainage		*The primary EM concern is ruling out '''[[septic arthritis]]''', which is a joint emergency requiring urgent drainage
	*Classification by number of joints involved helps narrow the differential:		*Classification by number of joints involved helps narrow the differential:

Danbot: Strip excess bold

2026-03-22T09:31:17Z

Strip excess bold

← Older revision		Revision as of 09:31, 22 March 2026
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	*The primary EM concern is ruling out '''[[septic arthritis]]''', which is a joint emergency requiring urgent drainage		*The primary EM concern is ruling out '''[[septic arthritis]]''', which is a joint emergency requiring urgent drainage
	*Classification by number of joints involved helps narrow the differential:		*Classification by number of joints involved helps narrow the differential:
	**~~'''~~Monoarticular~~'''~~ (1 joint): [[septic arthritis]], crystal disease, hemarthrosis — see [[Monoarticular arthritis]]		**Monoarticular (1 joint): [[septic arthritis]], crystal disease, hemarthrosis — see [[Monoarticular arthritis]]
	**~~'''~~Oligoarticular~~'''~~ (2-4 joints): reactive arthritis, seronegative spondyloarthropathy, gonococcal arthritis		**Oligoarticular (2-4 joints): reactive arthritis, seronegative spondyloarthropathy, gonococcal arthritis
	**~~'''~~Polyarticular~~'''~~ (≥5 joints): rheumatoid arthritis, viral arthritis, SLE, rheumatic fever		**Polyarticular (≥5 joints): rheumatoid arthritis, viral arthritis, SLE, rheumatic fever
	**~~'''~~Migratory~~'''~~: rheumatic fever, gonococcal arthritis, viral		**Migratory: rheumatic fever, gonococcal arthritis, viral
	*Key distinction: ~~'''~~inflammatory~~'''~~ (warm, swollen, worse with rest, morning stiffness >30 min) vs. ~~'''~~non-inflammatory/mechanical~~'''~~ (worse with activity, minimal swelling, no morning stiffness)		*Key distinction: inflammatory (warm, swollen, worse with rest, morning stiffness >30 min) vs. non-inflammatory/mechanical (worse with activity, minimal swelling, no morning stiffness)

	==Clinical Features==		==Clinical Features==
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	===Red Flags===		===Red Flags===
	*~~'''~~Hot, swollen, single joint~~'''~~ = septic until proven otherwise → [[arthrocentesis]]		*Hot, swollen, single joint = septic until proven otherwise → [[arthrocentesis]]
	*Fever with joint complaints (septic arthritis, endocarditis)		*Fever with joint complaints (septic arthritis, endocarditis)
	*Prosthetic joint with new pain/swelling (prosthetic joint infection)		*Prosthetic joint with new pain/swelling (prosthetic joint infection)
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	==Evaluation==		==Evaluation==
	===Monoarticular (Most Critical Workup)===		===Monoarticular (Most Critical Workup)===
	*~~'''~~[[Arthrocentesis]]~~'''~~ — perform on any acute hot, swollen joint		*[[Arthrocentesis]] — perform on any acute hot, swollen joint
	**Synovial fluid: cell count, Gram stain, culture, crystal analysis		**Synovial fluid: cell count, Gram stain, culture, crystal analysis
	**WBC >50,000 with >90% PMNs = presumed septic until culture results		**WBC >50,000 with >90% PMNs = presumed septic until culture results
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	==Management==		==Management==
	===Septic Arthritis===		===Septic Arthritis===
	*~~'''~~Emergent orthopedic consultation~~'''~~ for drainage		*Emergent orthopedic consultation for drainage
	*Empiric IV antibiotics: [[vancomycin]] +/- [[ceftriaxone]] (see [[Septic arthritis]])		*Empiric IV antibiotics: [[vancomycin]] +/- [[ceftriaxone]] (see [[Septic arthritis]])

Danbot: Expanded with EM-focused content: joint pattern classification, septic arthritis red flags, arthrocentesis guidance, management by type, disposition

2026-03-20T23:53:47Z

Expanded with EM-focused content: joint pattern classification, septic arthritis red flags, arthrocentesis guidance, management by type, disposition

@@ Line 1: / Line 1: @@
 ==Differential Diagnosis==
 {{Differential Diagnosis Monoarthritis}}
-{{Differntial Diagnosis Oligoarthritis}}
+===Gonococcal Arthritis===
-{{Differential Diagnosis Polyarthritis}}
+==Disposition==
-{{Differencial Diagnosis Migratory Arthritis}}
+===Discharge===
 ==See Also==
 *[[Arthrocentesis]]
 ==References==

ClaireLewis: /* References */

2019-10-17T23:47:50Z

References

← Older revision		Revision as of 23:47, 17 October 2019
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	[[Category:Orthopedics]]		[[Category:Orthopedics]]
	[[Category:Rheumatology]]		[[Category:Rheumatology]]
			[[Category:Symptoms]]

Mholtz at 03:08, 30 December 2016

2016-12-30T03:08:55Z

← Older revision		Revision as of 03:08, 30 December 2016
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	==See Also==		==See Also==
	*[[Arthrocentesis]]		*[[Arthrocentesis]]
	*[[Diagnosis by Body Part (Main)]]

	==References==		==References==
			<references/>

	[[Category:Orthopedics]]		[[Category:Orthopedics]]
	[[Category:Rheumatology]]		[[Category:Rheumatology]]

Ostermayer: Text replacement - "Category:Rheum" to "Category:Rheumatology"

2016-03-22T16:17:04Z

Text replacement - "Category:Rheum" to "Category:Rheumatology"

← Older revision		Revision as of 16:17, 22 March 2016
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	[[Category:Orthopedics]]		[[Category:Orthopedics]]
	[[Category:~~Rheum~~]]		[[Category:Rheumatology]]

Ostermayer: Text replacement - "Category:Ortho" to "Category:Orthopedics"

2016-03-22T15:48:10Z

Text replacement - "Category:Ortho" to "Category:Orthopedics"

← Older revision		Revision as of 15:48, 22 March 2016
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	==References==		==References==

	[[Category:~~Ortho~~]]		[[Category:Orthopedics]]
	[[Category:Rheum]]		[[Category:Rheum]]

Rossdonaldson1 at 18:03, 8 June 2015

2015-06-08T18:03:26Z

← Older revision		Revision as of 18:03, 8 June 2015
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	==Differential Diagnosis ~~by Number of Affected Joints~~==		==Differential Diagnosis==
	{{Differential Diagnosis Monoarthritis}}		{{Differential Diagnosis Monoarthritis}}

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	{{Differential Diagnosis Polyarthritis}}		{{Differential Diagnosis Polyarthritis}}

	~~==Differential~~ Diagnosis ~~for~~ Migratory ~~Pattern==~~		{{Differencial Diagnosis Migratory Arthritis}}
	*[[Septic Arthritis ~~(General)\|Gonococcal arthritis]]~~
	*[[Acute Rheumatic Fever]]
	*[[Lyme Disease]]
	*Viral arthritis
	*[[Systemic Lupus Erythematosus\|SLE]]

	==See Also==		==See Also==

Rossdonaldson1: /* Differential Diagnosis by Number of Affected Joints */

2015-06-08T17:46:27Z

Differential Diagnosis by Number of Affected Joints

← Older revision		Revision as of 17:46, 8 June 2015
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	{{Differntial Diagnosis Oligoarthritis}}		{{Differntial Diagnosis Oligoarthritis}}

	~~===Polyarthritis===~~
	{{Differential Diagnosis Polyarthritis}}		{{Differential Diagnosis Polyarthritis}}

Rossdonaldson1: /* Oligoarthritis */

2015-06-07T08:59:54Z

Oligoarthritis

← Older revision		Revision as of 08:59, 7 June 2015
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	{{Differential Diagnosis Monoarthritis}}		{{Differential Diagnosis Monoarthritis}}

	~~===Oligoarthritis===~~
	{{Differntial Diagnosis Oligoarthritis}}		{{Differntial Diagnosis Oligoarthritis}}