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Trauma

TIBIAL PLATEAU FRACTURES: WHEN WILL I NEED A KNEE REPLACEMENT?

Scottish Committee for Orthopaedics and Trauma (SCOT)



Abstract

Tibial plateau fractures are common intraarticular fractures. The principal long-term complication is post-traumatic osteoarthritis (PTOA) with the usual salvage procedure being total knee arthroplasty (TKA). Our aim was to define the incidence of PTOA requiring TKA following tibial plateau fractures and identify the risk factors.

We looked at all tibial plateau fractures between 1995 and 2008. There were 888 tibial plateau fractures. 23% were Schatzker I, 25% II, 14% III, 22% IV, 8% V and 8% VI. To date 25 have undergone TKA (2.8%). The mean age of patients at time of fracture was 56 in the overall cohort and 65 in those requiring TKA; this was statistically significant (p=0.04). 4% of females with tibial plateau fractures required TKA in comparison to 2% of males. The Schatzker I fractures were the least likely to require TKA at 1% with the most likely requiring arthroplasty surgery being type III at 6%. Only 1% of the patients treated non-operatively later underwent TKA

The overall incidence of TKA after tibial plateau fractures was 3%. For displaced fractures requiring internal fixation this rose to 4%. Risk factors were increasing age, split depression fractures and female gender. Although tibial plateau fractures are commonly associated with degenerative radiographic changes, we concluded that the incidence of symptomatic OA severe enough to require TKA is low.