Langfristiger Einfluss der anatomisch angepassten spongiösen Endoprothese auf den periprothetischen Knochen

Abstract

The original goal of a physiological load transfer has not been realised with this fully porous, cementless THR. The anatomic S & G stem will mainly be osseointegrated by distal load transfer.

Bleibt der Krafteinfluss der Kurzschaftprothese auf den methaphysären proximalen Femur begrenzt? Osteodensitometrische Analysen der NANOS®-Schaftendoprothese

“…Bei Prothesen mit kürzerem Stiel war die Knochendichteabnahme insgesamt deutlich niedriger als bei Prothesen mit längerem Stiel. Die Kurzschaftprothese vom Typ Mayo ® zeigte einen Verlust der Knochendichte von 15%, die Gradschaftprothesen bewiesen einen durchschnittlichen Verlust an Knochendichte von 19 % bis 29 %[1,12,26]. Allen Prothesentypen war eine erhebliche Knochendichteabnahme im periprothetischen proximalen Teil des Femurs in der Region des Calcar femoris gemeinsam[26].…”

Towards the First Generation of Biomimetic Fixation for Resurfacing Arthroplasty Endoprostheses

“…The pattern provided circumferentially distributed escape dimples for wear particles and improved lubrication by providing room for the lubricant [111]. The acetabular component had a spongiosa metal structured surface called Spongiosa Metal ® made of a CoCrMo with a titanium niobium (TiNb) coating or an HA coating, available upon request, for cementless anchorage through osseous integration that proved to have excellent long stability in clinical trials [96,97]. The cementless anchorage via the Spongiosa Metal ® was also applied in the case of the femoral component.…”

Forged to heal: The role of metallic cellular solids in bone tissue engineering

“…Spongiosa metal [ 3 ], one of the first commercially available porous cobalt-chromium biomedical products, was reported to have a survival rate between 88.8% [ 232 ] and 98% [ 233 ] in follow ups of 15, 20 or more years, with variable degree of stress shielding phenomena occurring in 21% of cases [ 232 ]. The clinical survival rate of cobalt-chromium cellular solids from 20 scientific papers [ 101 , 215 , [232] , [233] , [234] , [235] , [236] , [237] , [238] , [239] , [240] , [241] ] has been presented in Fig. 4 .…”