|United States Patent||3,848,273|
|Frey||November 19, 1974|
The shank is provided with texturized zones in the external surface to insure uniform contact between the bone cement and the shank when the shank is implanted. The texturized zones allow the shank to be withdrawn readily from a bone and can be formed to depths of 10 to 100.mu..
|Inventors:||Frey; Otto (Winterthur, CH)|
Sulzer Brothers Ltd.
|Filed:||January 29, 1973|
|Feb 02, 1972 [CH]||1550/72|
|Current U.S. Class:||623/23.29|
|Current International Class:||A61F 2/30 (20060101); A61F 2/00 (20060101); A61F 2/38 (20060101); A61F 2/42 (20060101); A61F 2/46 (20060101); A61F 2/36 (20060101); A61f 001/24 ()|
|Field of Search:||3/1 128/92C,92CA,92B,92BA,92BC 32/1A|
|3314420||April 1967||Smith et al.|
Vitallium Surgical Appliances, (catalog) by Austenal Co., New York, N.Y. 1964, page 23, F. R. Thompson, Hip Prosthesis Relied Upon. .
"Surgical Implants-The Role of Surface Porosity in Fixation to Bone & Acrylic" by R. Peter Welsh et al., The Journal of Bone & Joint Surgery, Vol. 53-A, No. 5, July 1971..