Twelve years' experience with posterior cruciate-retaining total knee arthroplasty.

摘要: The posterior cruciate ligament can be retained with advantage during routine total knee arthroplasty. This is virtually always intact and functioning, even in rheumatoid patients. It an important biologic stabilizer of the knee, capable absorbing anterior-posterior shearing forces that otherwise must borne by a constrained prosthesis hence bone-cement interface. Its presence allows maintenance normal kinematics knee. Roll-back femur on tibia occur, enhancing flexion improving quadriceps moment. Substitution addition prosthetic constraint will increase reaction forces. These prostheses also require significant intercondylar femoral bone stock resection. average range motion early sacrificing design used Insall's series was 94 degrees, 10 degrees or more less than now routinely seen preservation. interface condylar limited absorbed force it potentially might encounter greater increased function. Predictably, at long-term follow-up examination newer cruciate-substituting allow physiologic show higher radiolucent line rates loosening their cruciate-preserving counterparts. Only this information settle argument over whether should preserved, if objective maximum functional capability.