Abstract
Introduction: There has been a general belief in the negative effects of increased body mass index (BMI) on the outcome of arthroplasty surgery. This study compares the complications following primary total hip replacement in obese patients.
Methods: The incidence of myocardial infarction, deep vein thrombosis, pulmonary embolism, wound infection and dislocation within the 30 days postoperative period was reviewed and compared if the BMI exceeded 30. A total of 329 patients were included in this study. There were 216 cases with BMI less than 30 compared with 113 cases of BMI more than 30. Uncemented pinnacle press-fit cup on S-ROM stem was used with 28 mm head in 137 and 36 mm head in 192 cases.
Results: There was no significant statistical difference in the incidence of early complications. However, in the subgroup of 28 mm head, there was significant increase in the infection rate when BMI was more than 30 (P< 0.032).
Discussion: In this small study, there was no significant increase in the overall incidence of the postoperative complications in obese patients. Further studies are required to assess if implant longevity is reduced in overweight patients.
Correspondence should be addressed to The Secretary, BHS, c/o BOA, The Royal College of Surgeons, 35–43 Lincoln’s Inn Fields, London WC2A 3PE.
