FAMILY OF TIBIAL PROSTHESIS (VERSIONS) Russian patent published in 2016 - IPC A61F2/38 

FIELD: medicine.

SUBSTANCE: group of inventions relates to medicine. Family of tibial prosthesis, which size is selected to be attached to the proximal tibia as per the first version, comprises multiple tibial prosthesis having multiple peripheries of prostheses. Each named periphery of the prosthesis comprises a centroid, an anteroposterior axis, which divides the said prosthesis periphery into a middle compartment and a side compartment, a distance of median-posterior (DMP) passing from the said centroid to the posteromedian part of the said prosthesis periphery, a distance of lateral-posterior (DLP) passing from the said centroid to the posterolateral part of the said prosthesis periphery. Said multiple prostheses peripheries comprises a small periphery corresponding to the small size prosthesis, a middle periphery corresponding to the average size prosthesis and a larger periphery corresponding to the large size prosthesis. Said small periphery forms the said posteromedian distance having small posteromedian length, and the said posterolateral distance having small posterolateral length. Medium size prosthesis is the one of the next larger size relative to the above small size prosthesis. Said middle periphery forms the said posteromedian distance having a middle posteromedian length, which is larger than the said small posteromedian length, so that the first posteromedian body height appears. Said middle periphery additionally forms the said posterolateral distance having a middle posterolateral length, which is larger than the said small posterolateral length, so that the first posterolateral body height appears. Large size prosthesis is the one of the next largest size relative to the above medium size prosthesis. Said large periphery forms the said posteromedian distance having large posteromedian length, which is larger than the said medium posteromedian length, so that the second posteromedian body height appears. Said large periphery additionally forms the said posterolateral distance having large posterolateral length, which is larger than the said middle posteromedian length, so that the second posterolateral body height appears. Said second posteromedian body height exceeds the said first posteromedian body height. Said second posterolateral body height exceeds the said first posterolateral body height. Family of tibial prosthesis, which size is selected to be attached to the proximal tibia as per the second version, comprises multiple tibial prosthesis. Each named periphery of the prosthesis comprises a centroid, an anteroposterior axis, which divides the said prosthesis periphery into a middle compartment and a side compartment, a distance of median-posterior (DMP), passing from the said centroid to the posteromedian part of the said prosthesis periphery, a distance of lateral-posterior (DLP) passing from the said centroid to the posterolateral part of the said prosthesis periphery, and multiple peripheries of prostheses. Said multiple prostheses peripheries comprises a small periphery, which makes the said posteromedian distance having small posteromedian length and the said posterolateral distance having small posterolateral length, a large periphery, which makes the said posteromedian distance having large posteromedian length, larger than the said small posteromedian length, so that the posteromedian body height appears. Said large periphery additionally forms the said posterolateral distance having larger posterolateral length than the said small posterolateral length, so that the posterolateral body height appears. Said posteromedian body height exceeds the said first posterolateral body height.

EFFECT: invention enables creation of the prosthesis components, which have dimensions suitable for patients bones and are designed for implantation in specific, proper orienting in order to provide desirable prosthesis performance.

23 cl, 6 tbl, 8 dwg