The relationship between obesity and the age at which hip and knee replacement is undertaken M. Changulani, Y. Kalairajah, T. Peel, R. E. Field From South West London Elective Orthopaedic Centre, Epsom, England J Bone Joint Surg [Br] 2008;90-B:360-3. We audited the relationship between obesity and the age at which hip and knee replacement was undertaken at our centre. The database was analysed for age, the Oxford hip or knee score and the body mass index (BMI) at the time of surgery. In total, 1369 patients were studied, 1025 treated by hip replacement and 344 by knee replacement. The patients were divided into five groups based on their BMI (normal, overweight, moderately obese, severely obese and morbidly obese). The difference in the mean Oxford score at surgery was not statistically significant between the groups (p > 0.05). For those undergoing hip replacement, the mean age of the morbidly obese patients was ten years less than that of those with a normal BMI. For those treated by knee replacement, the difference was 13 years. The age at surgery fell significantly for those with a BMI > 35 kg/m2 for both hip and knee replacement (p > 0.05). This association was stronger for patients treated by knee than by hip replacement. RELATIA DINTRE OBEZITATE SI VARSTA LA CARE SE REALIZEAZA ARTROPLASTIA DE SOLD SI GENUNCHI Am studiat relatia care exista intre obezitate si varsta la care se realizeaza artroplastii de sold si genunchi in centrul nostru. S-au urmarit varsta, scorul Oxford pentru sold sau genunchi si indexul de masa corporala( BMI) la momentul operatiei. Au fost studiati 1369 de pacienti, 1025 cu artroplastie de sold si 344 cu artroplastie de genunchi. Pacientii au fost impartiti in 5 grupuri in functie de BMI( normal, supraponderal, obezitate moderata, obezitate severa si obezitate morbida). Diferentele intre scorurile Oxford medii la momentul operator nu au fost semnificative statistic intre grupuri ( p>0.05). Pentru cei cu artroplastie de sold, varsta medie pentru pacientii cu obezitate morbida a fost cu 10 ani mai mica decat pentru cei cu BMI normal. Pentru cei cu artroplastie de genunchi, diferenta a fost de 13 ani. Varsta la care s-a practicat interventia chirurgicala de artroplastie atat pentru sold cat si pentru genunchi a fost mult mai mica la cei cu BMI > 35kg/m2 (p>0.05). Aceasta asociere a fost mai importanta in cazul pacientilor care au necesitat o artroplastie de genunchi.