Surgery – Computer assisted medical diagnostics – By comparison of patient data to other data
Patent
1986-09-26
1988-12-20
Apley, Richard J.
Surgery
Computer assisted medical diagnostics
By comparison of patient data to other data
128924V, A61F 524
Patent
active
047919183
ABSTRACT:
A femoral-neck implant has an elongated plate formed with a row of holes and adapted to fit against a femur below a trochanter, respective corticalis screws traversing the holes in the plate for securing same to the femur below the trochanter femur, a stiff upper concave portion unitary with and extending from the plate and adapted to fit against the trochanter, the portion having a plurality of holes. Respective tension-force-resisting spongiosa screws traverse the holes in the concave portion and reach from the portion into the head and through the neck of the femur. An internally threaded body is formed on the plate at a junction thereof and has a surface turned toward the femur which is flush with surfaces of the shaft and the portion turned toward the femur. The screw thread of the body has an axis which forms an obtuse angle with the plate and smooth-surfaced cylindrical shaft which extends along the axis and is provided with a male screw thread at an end of the shaft adapted to be threaded into the screw thread of the body. The cylindrical shaft is receivable slidably in a bore extending below the trochanter and into the neck and head of the femur, the tension force resistance of the spongiosa screws relieving the shaft from bending stresses.
REFERENCES:
patent: 2772676 (1956-12-01), Pohl
patent: 3489143 (1970-01-01), Halloran
patent: 4219015 (1980-08-01), Steinemann
patent: 4488543 (1984-12-01), Tornier
Apley Richard J.
Dubno Herbert
Isabella David J.
Wilford Andrew
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