Intramedullary pressure of the patella in Chondromalacia.
Degenerative changes in load-bearing joints are often combined with altered intramedullary circulation. This may cause an alteration in intramedullary pressures. It has been said that articular symptoms are connected with a change in intramedullary pressures being high they are suspected to cause pain. In this investigation the intramedullary pressure has been evaluated in chondromalacia and osteoarthrosis of the patella. A comparison has been made with normal patellae. A biopsy needle was drilled into the intramedullary bone of the patella and connected with a registering unit. In a control group an average value of 19 mm Hg was registered. In the condromalacia group the mean intramedullary pressure was 44 mm Hg and in osteoarthrosis 37 mm Hg.
D000293:Adolescent; D000328:Adult; D001707:Biopsy, Needle; D001853:Bone Marrow / Q000503:physiopathology; D002357:Cartilage Diseases / Q000473:pathology*; D002358:Cartilage, Articular / Q000473:pathology; D005260:Female; D006801:Humans; D008297:Male; D010003:Osteoarthritis / Q000473:pathology; D010329:Patella / Q000473:pathology*; D011312:Pressure