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The functional morphology of the synovial vasculature in the rabbit knee joint was investigated using our technique of microendoscopy, which involves an in vivo microscopy via a 1.9-mm endoscope. In the vessels of the fibrous tissue of the joint capsule it was found that after intraarticular administration of epinephrine the blood flow and the vascular diameters decrease for 3-5 min. In the areolar part of the synovial tissue, an external elevation of the intraarticular pressure causes collapse of the capillaries at 10-15 mm Hg, whereas the collapse pressure of the arterioles is 30-40 mm Hg. Intraarticular application of Neuropeptide Y (NPY) leads to a marked vasoconstriction including the arteriovenous anastomoses, whereas after epinephrine the arteriovenous anastomoses remain patent or dilate during the arteriolar constriction phase. It is concluded that the technique of microendoscopy allows a valuable in vivo investigation of the synovial microvasculature.
R H Funk, and
R Tischendorf, and
H Bratengeier
January 1989,
Ophthalmic research,
R H Funk, and
R Tischendorf, and
H Bratengeier
October 1995,
The Anatomical record,
R H Funk, and
R Tischendorf, and
H Bratengeier
January 2001,
Histology and histopathology,
R H Funk, and
R Tischendorf, and
H Bratengeier
January 1987,
Scandinavian journal of rheumatology,
R H Funk, and
R Tischendorf, and
H Bratengeier
April 1970,
Acta rheumatologica Scandinavica,
R H Funk, and
R Tischendorf, and
H Bratengeier
April 1950,
Turk Tip Cemiyeti mecmuasi,
R H Funk, and
R Tischendorf, and
H Bratengeier
January 1992,
Histology and histopathology,
R H Funk, and
R Tischendorf, and
H Bratengeier
January 1975,
Surgical forum,
R H Funk, and
R Tischendorf, and
H Bratengeier
January 1986,
Journal of orthopaedic research : official publication of the Orthopaedic Research Society,
R H Funk, and
R Tischendorf, and
H Bratengeier
January 1980,
Zeitschrift fur Rheumatologie,
