Abstract: Objective This study was performed to compare the clinical outcomes between patients with posterior cruciate-retaining (CR) and posterior cruciate-excising (CE) total knee arthroplasty (TKA).Methods From 2007 to 2014, 56 patients (21 males and 35 females; 20 left, 36 right) with an average age of (66.56±10.33)years (from 52 to 78 years) were enrolled in this study. Patients were randomly divided into two groups, including group 1 of 34 patients subjected to CR TKA, and group 2 of 22 patients subjected to CE TKA. The evaluation parameters included operative time, blood loss, knee score and range of motion of knee.Results Fifty-six patients after an average follow-up of (25.6±7.3)months (from 12 to 36 months). Operative time was (103±21)min, (98±23)min (P>0.05). Blood loss was (361±120)mL,(355±98)mL (P>0.05). Knee score was 90.2 and 88.6 points (P>0.05). Range of motion of knee was, extension:-1.0 and-2.5 (P<0.05), flexion:111 and 112 (P>0.05). Although there was no significant difference between operative time, blood loss, knee score and the total range of motion of knee, the difference of extension range of motion of knee between the two groups was statistically significant.Conclusion Cruciate-retaining and cruciate-excising TKA function equally well postoperatively. It should be decided on the specific circumstances and the surgeons' habit.

Key words: total knee arthroplasty, posterior cruciate, knee osteoarthritis