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The role of the posterior cruciate ligament in total knee replacement Misra AN; Hussain MR; Fiddian NJ; Newton GJ Bone Joint Surg Br 2003[Apr]; 85 (3): 389-92We randomised 129 knees which were to be replaced using a standard posterior-cruciate-ligament (PCL)-retaining cemented total knee replacement into two groups. In one the PCL was retained in the normal way and in the other it was resected. They were well matched, with a predominance of women, and a mean age of 67 years. There was no statistically significant difference in the Hospital for Special Surgery scores at a mean of 57 months (56 to 60) between the two groups although 21 patients (24 knees) were lost to follow-up. Relief from pain, correction of deformity, range of movement, stability and strength were comparable in both. Radiological assessment showed femoral rollback in approximately 20% of knees with a slightly higher incidence in the PCL-resected group. There was no significant loosening detected in either group at review at two years. At five years, one knee in the PCL-retained group had been revised because of infection and one patient in each group was awaiting revision for loosening. Our findings have shown no significant difference in the five-year results for a PCL-retaining total knee replacement if the PCL is excised or preserved. This suggests two important points. First, the PCL is not functional in most patients with a total knee replacement even when retained. Secondly, patients with an excised PCL show a good result with a PCL-retaining implant, thereby questioning the need for a posterior stabilised design in such a situation.|*Posterior Cruciate Ligament[MESH]|Aged[MESH]|Aged, 80 and over[MESH]|Arthritis, Rheumatoid/surgery[MESH]|Arthroplasty, Replacement, Knee/*methods[MESH]|Bone Cements[MESH]|Female[MESH]|Humans[MESH]|Length of Stay[MESH]|Male[MESH]|Middle Aged[MESH]|Osteoarthritis, Knee/surgery[MESH]|Prospective Studies[MESH]|Treatment Outcome[MESH] |
