Fig. 4

Comparison of extension moment-flexion angle relationships among native knees and different arthroplasty types. (Static flexion angles against mean extension moment (Nm) for native knees, lateral unicompartmental knee arthroplasty (UKA-L), lateral bicompartmental knee arthroplasty (BCA-L), and total knee arthroplasty (TKA); 95% confidence intervals with a shaded blue area for the native knee, and bars for implanted knees. Italicized letters indicate pairwise statistical differences (P < 0.05): NU, native vs. UKA-L; NB, native vs. BCA-L; NT, native vs. TKA; UB, UKA-L vs. BCA-L; UT, UKA-L vs. TKA; BT, BCA-L vs. TKA [43])