Hemarthrosis

Hemarthrosis is a bleeding into joint spaces. It is a common feature of hemophilia.

Hemarthrosis
Other namesHaemarthrosis
Lipohemarthrosis (blood and fat in the joint space) seen in a person with a subtle tibial plateau fracture. The arrow indicates a fluid level between the upper fat component and the lower blood component.
Medical specialtyRheumatology
SymptomsJoint pain, swelling, and redness

Blood tests

Synovial fluid examination[1][2]
Type WBC (per mm3) % neutrophils Viscosity Appearance
Normal <200 0 High Transparent
Osteoarthritis <5000 <25 High Clear yellow
Trauma <10,000 <50 Variable Bloody
Inflammatory 2,000–50,000 50–80 Low Cloudy yellow
Septic arthritis >50,000 >75 Low Cloudy yellow
Gonorrhea ~10,000 60 Low Cloudy yellow
Tuberculosis ~20,000 70 Low Cloudy yellow
Inflammatory: Arthritis, gout, rheumatoid arthritis, rheumatic fever
  1. ↑ Flynn JA, Choi MJ, Wooster DL (2013). Oxford American Handbook of Clinical Medicine. US: OUP. p. 400. ISBN 978-0-19-991494-4.
  2. ↑ Seidman AJ, Limaiem F (2019). "Synovial Fluid Analysis". StatPearls. StatPearls Publishing. PMID 30725799. Retrieved 2019-12-19.


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