Hidden blood loss and its risk factors between high tibial osteotomy and unicompartmental knee arthroplasty for knee osteoarthritis: a retrospective study

被引：0

作者：

Tao Yu ^{[2
]}

Yiqi Chen ^{[2
]}

Ziye Yang ^{[2
]}

Hao Chen ^{[2
]}

Zhenyu Shen ^{[2
]}

Enxing Xue ^{[1
]}

Dengying Wu ^{[1
]}

机构：

[1] Department of Orthopaedics, The Second Affiliated Hospital, Yuying Childrens Hospital of Wenzhou Medical University, Zhejiang Province, Wenzhou

[2] The Second School of Medicine, Wenzhou Medical University, Zhejiang Province, Wenzhou

来源：

BMC Musculoskeletal Disorders | / 26卷 / 1期

关键词：

Arthroplasty; Knee; Osteoarthritis; Osteotomy; Retrospective studies; Risk factors;

D O I：

10.1186/s12891-025-08587-y

中图分类号：

学科分类号：

摘要：

Purpose: The aim of our study was to compare the hidden blood loss (HBL) between patients treated with unicompartmental knee arthroplasty (UKA) and high tibial osteotomy (HTO) and to identify predictors of HBL in this cohort. Methods: We conducted a retrospective study including 91 patients who had knee osteoarthritis, of which 31 cases (male/female: 12/19) received HTO and 60 cases (male/female: 24/36) received UKA, from January 2021 to January 2023. Demographics, clinical information and laboratory values were collected and compared. Recording preoperative and postoperative hematocrit and estimating intraoperative blood loss by surgeon to calculate HBL according to Nadler, Gross and Sehat formula. Effect sizes were determined using Cohen’s d and Glass rank biserial correlation coefficient to assess clinical difference in the data. The Spearman correlation analysis was used to investigate an association between patient’s characteristics and HBL. Multiple linear regression analysis was used to confirm independent risk factors of HBL. Results: The HBL and TBL of the HTO group (534.49 ± 336.05 ml, 639.65 ± 337.81 ml, respectively) are significantly higher than that in the UKA group (359.42 ± 263.51 ml, 408.76 ± 283.50 ml, respectively; P = 0.008, P = 0.001). Effect size analysis indicated moderate clinical significance (Cohen’s d [95% CI] = 0.604 [0.160, 1.045] for HBL, 0.762 [0.312, 1.208] for TBL). The multiple linear regression analysis suggested post-operative hemoglobin values and hemoglobin loss were independent risk factors for HBL in the UKA and HTO groups. Conclusion: This study provides new insights into the comparative blood loss between HTO and UKA procedures, highlighting that HBL and TBL are significantly higher in HTO than in UKA. The moderate clinical significance of this difference emphasize the need for careful management of post-operative anemia, particularly in patients undergoing HTO, where blood loss may be more pronounced. Its risk factors should be paid more attention during the perioperative period. Clinical trial number: Not applicable. © The Author(s) 2025.

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