Effect of osteoporosis on hidden hemorrhage after TKA: A retrospective study

To investigate the relationship between the degree of osteoporosis and TBL, DBL and HBL during perioperative in elderly patients after TKA. From October 2022 to December 2023, 70 patients were enrolled into the study.According to the WHO classification of osteoporosis, all patients were divided into three groups: normal group (n = 12), osteopenia group (n = 21), osteoporosis group (n = 37). The latest statistical software SPSS22.0 was used for data analysis. TBL of the three groups were (787.88 ± 173.48)ml, (856.09 ± 213.54)ml and (1046.78 ± 207.36)ml respectively, DBL of the three groups were (262.04 ± 37.14)ml, (260.55 ± 29.99)ml and (264.48 ± 35.09)ml respectively, and HBL were (529.84 ± 113.15)ml、(595.54 ± 128.11)ml、(782.30 ± 123.53)ml respectively. For TBL and HBL, the osteoporosis group was significantly higher than the osteopenia group and the normal group(P < 0.05). Osteoporosis can significantly increase blood loss for patients with TKA, especially increase the TBL and HBL, but have no obvious effect on the amount of DBL.