A system of components for facilitating a knee arthroplasty procedure, the system of components comprising: (a) a first series of knee arthroplasty components including at least a first knee arthroplasty component and a second knee arthroplasty component, wherein the first and second knee arthroplasty components are of equal size; (b) a second series of knee arthroplasty components including at least a third knee arthroplasty component and a fourth knee arthroplasty component, wherein the third and fourth knee arthroplasty components are of equal size, and wherein the first and second knee arthroplasty components are not of equal size with the third and fourth knee arthroplasty components; (c) wherein each of the first, second, third and fourth knee arthroplasty components includes a wrapping surface configured for wrapping contact with a posterior cruciate ligament; (d) wherein a geometry of the wrapping surface of the first knee arthroplasty component is different from a geometry of the wrapping surface of the second knee arthroplasty component such that the wrapping surface of the first knee arthroplasty component is configured to generate at least one of a different tension in or direction of force on the posterior cruciate ligament relative to the wrapping surface of the second knee arthroplasty component; and (e) wherein a geometry of the wrapping surface of the third knee arthroplasty component is different from a geometry of the wrapping surface of the fourth knee arthroplasty component such that the wrapping surface of the third knee arthroplasty component is configured to generate at least one of a different tension in or direction of force on the posterior cruciate ligament relative to the wrapping surface of the fourth knee arthroplasty component. (a) a first series of knee arthroplasty components including at least a first knee arthroplasty component and a second knee arthroplasty component, wherein the first and second knee arthroplasty components are of equal size; (b) a second series of knee arthroplasty components including at least a third knee arthroplasty component and a fourth knee arthroplasty component, wherein the third and fourth knee arthroplasty components are of equal size, and wherein the first and second knee arthroplasty components are not of equal size with the third and fourth knee arthroplasty components; (c) wherein each of the first, second, third and fourth knee arthroplasty components includes a wrapping surface configured for wrapping contact with a posterior cruciate ligament; (d) wherein a geometry of the wrapping surface of the first knee arthroplasty component is different from a geometry of the wrapping surface of the second knee arthroplasty component such that the wrapping surface of the first knee arthroplasty component is configured to generate at least one of a different tension in or direction of force on the posterior cruciate ligament relative to the wrapping surface of the second knee arthroplasty component; and (e) wherein a geometry of the wrapping surface of the third knee arthroplasty component is different from a geometry of the wrapping surface of the fourth knee arthroplasty component such that the wrapping surface of the third knee arthroplasty component is configured to generate at least one of a different tension in or direction of force on the posterior cruciate ligament relative to the wrapping surface of the fourth knee arthroplasty component.