Surgery – Truss – Perineal
Patent
1988-08-09
1990-09-04
Hafer, Robert A.
Surgery
Truss
Perineal
128 80F, A61F 500
Patent
active
049535439
ABSTRACT:
A leg brace for alleviating problems with torn or damaged anterior or posterior cruciate ligaments includes an upper assembly oriented longitudinally with and extending circumferentially around the thigh, a lower assembly oriented longitudinally with and extending circumferentially around the calf, and hinge assemblies connecting the upper and lower assemblies and with axes oriented along the axis of rotation of the knee joint. Two pairs of elongate support struts are provided with one pair extending along the medial and lateral portions of the thigh and the other extending along the medial and lateral portions of the calf and with the central ends of both pairs of struts connected to the hinge assemblies. Straps are provided with the upper and lower assemblies and which extend circumferentially around the thigh and calf respectively for securing the leg brace to the wearer's leg. Padding is provided with the upper and lower assemblies and which extend circumferentially around the thigh and calf respectively. On the lower assembly, separate anterior and posterior cruciate ligament support plate assemblies are provided for applying independently variable posteriorly and anteriorly directed forces against the tibia. Each support plate assembly is independently attached to the lower assembly's pair of elongate support struts and may be independently vertically adjusted through vertical slots in the support struts to accommodate different leg sizes. A support collar may be utilized to grip the wearer's leg just above the ankle and thereby prevent downward slippage or pistoning of the leg brace during use.
REFERENCES:
patent: 891181 (1908-06-01), Mitchell
patent: 2229271 (1941-01-01), Anderson
patent: 2531486 (1950-11-01), Weber
patent: 3762405 (1973-10-01), DeGeorge
patent: 4271831 (1981-06-01), Deibert
patent: 4481941 (1984-11-01), Rolfes
patent: 4614181 (1986-09-01), Karlsson
patent: 4697583 (1987-10-01), Mason et al.
Grim Tracy E.
Haines Jeffrey R.
Hafer Robert A.
Rooney Kevin G.
Royce Medical Company
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