HHS:Mean pre-arthroplasty score 47 (range 10–73), 1 yr score 99 (n=38), 2yr 97.3 (n=30) at 3yr 100 (n=26) &
4th yr 100 (n=4), this shows a statistically signiþcant improvement (P=0.001). WOMAC: Pain: pre-op score 18.8, at 1 year 5.6 &
2nd year 5.7. Stiffness: pre-op 8.5, 1 year 2.7 &
2nd year 2.7. Physical: 49.3, 1 year 23.4 &
2nd year 22.6. This shows a statistically signiþcant improvement in score (p=0.025) SF-36 Analysed against an age/sex match control group of normal values using a 2 tailed Ôtñ Test, seven of the eight domains showed no statistical signiþcant difference.
Data was analysed by calculating kappa coefþcients (95% CI)