Personal outcome data for knee replacements

Mr Chitnavis’ patients Internal Audit data for outcomes of partial and total knee replacements in patients who underwent surgery 1/1/2011 to 31/12/2013

Based on available knee scores

(Hospital for Special Surgery and Knee Society combined score. Maximum is 200)

Total cases = 113

Missing data obviating scoring from before to latest follow-up (minimum 6 months) = 39 replacements

Available scores on 74 knee replacements

Number better after surgery in terms of knee scores: 70 out of 74

Average rise in scores for these was 48 (70 knee replacements)

Number worse after surgery : 4 out of 74.

Average fall in scores for these four was 21 (range of scores: -31,-16,-14,-24)


Angina, Atrial fibrillation, sacral sore, wound infection warranting debridement and closure (two operations), urinary tract infection, spacer mis-match to Oxford knee (discussed with international expert), stiffness (2 cases), stitch abscess, wound edge overlap.

Average rise in score for entire cohort was 44 (74 knee replacements)


Acknowledgements: Hari Chitnavis who helped collate data.

Calculations by Jai Chitnavis. 22nd October 2014. Raw data available for review.