Study to estimate the average blood loss in different orthopedic procedures: A retrospective review

In orthopedic surgery, bleeding is an inevitable side effect. The study's aim was to provide estimated blood loss values in various orthopedic procedures and take a step towards developing statistically reliable formulae. This can provide blood loss values in orthopedic surgery, which will be a very good tool for operative planning. We reviewed case notes of 282 patients in a UK based trauma center from December 2020 to March 2021,who had undergone a various orthopedic procedures. The results were analyzed using SPSS version 25. Most common fracture was neck of femur (37.5%)followed by intertrochanteric fractures(27.6%). Paired t-test was used, and there is good evidence (t281 = 14.957, p = 0.000) that intraoperative transfusions increased HB levels in patients (t281 = 14.957, p = 0.000) by an average of 1.331 points, with a 95% confidence interval of 1.156–1.506. As a result, the variation between the Pre-op and Post-op HB levels is statistically important but minimal. We can see that the mean blood loss is statistically different in different age groups (0.03) of patients and by the existence of co-morbids using analysis of variance (0.04). The average number of days spent in the hospital varies by surgical type (0.01) performed on patients. Orthopedic surgery can be associated with high levels of blood loss. There is a significant relation between fracture form and age groups, change of wound dressing (COD), use of a tourniquet, and drain insertion, no connection was noted between gender and fracture types. •Bleeding is an unavoidable side effect of most surgical operations, including orthopaedic surgery.•There is a scarcity of literature that can provide us an estimate of how much blood will be lost during various orthopaedic operations.•Goal of the study was to offer estimated blood loss estimates in various orthopaedic operations.•There is a significant relationship between fracture type and age groups, change of wound dressing (COD), use of a tourniquet.