Intraarticular volume and clearance in human synovial effusions

Journal Article · Mon Apr 01 00:00:00 EST 1985 · Arthritis Rheum.; (United States)

DOI:https://doi.org/10.1002/art.1780280413· OSTI ID:5607931

Wallis, W J; Simkin, P A; Nelp, W B; Foster, D M

Intraarticular volumes were measured by radiolabeled albumin (RISA) distribution in chronic knee effusions from 11 rheumatoid arthritis patients and 9 osteoarthritis patients. Volumes of synovial fluid obtained at joint aspiration were substantially less than those found by RISA dilution. Up to 24 hours was needed for full distribution of RISA throughout the intraarticular compartment. Measured 123I and RISA radioactivity over the knee described monoexponential rate constants, lambda (minute-1). The clearance of 123I and RISA from synovial effusions was derived by the formulation volume (ml) X lambda (minute-1) = clearance (ml/minute). RISA clearance in rheumatoid effusions was significantly greater than that found in osteoarthritis effusions. Intraarticular volume and isotope clearance were easily quantified and provide measures for further evaluating the microvascular physiology of synovial effusions.

• Research Organization: Department of Medicine, University of Washington, Seattle 98195
• OSTI ID: 5607931
• Journal Information: Arthritis Rheum.; (United States), Vol. 28:4
• Country of Publication: United States
• Language: English

Related Subjects

59 BASIC BIOLOGICAL SCIENCES
BONE JOINTS
PHYSIOLOGY
IODINE 123
CLEARANCE
LABELLED COMPOUNDS
ALBUMINS
BODY FLUIDS
PATIENTS
RHEUMATIC DISEASES
BETA DECAY RADIOISOTOPES
BIOLOGICAL MATERIALS
BODY
DISEASES
ELECTRON CAPTURE RADIOISOTOPES
HOURS LIVING RADIOISOTOPES
INTERMEDIATE MASS NUCLEI
IODINE ISOTOPES
ISOTOPES
MATERIALS
NUCLEI
ODD-EVEN NUCLEI
ORGANIC COMPOUNDS
ORGANS
PROTEINS
RADIOISOTOPES
SKELETAL DISEASES
SKELETON
551001* - Physiological Systems- Tracer Techniques