Hematocrit, a commonly used hematological indicator, is a simple and easily applicable test. As a marker of anisocytosis and anemia, it indicates the percentage of blood cells per unit volume of whole blood. This study aimed to evaluate the association between the level of the hematocrit at admission and preoperative deep vein thrombosis (DVT) in hip fractures of older people. We collected the demographic and clinical characteristics of patients with geriatric hip fractures between 1 January 2015, and 30 September 2019, at the largest trauma center in northwestern China. Doppler ultrasonography was used to diagnose DVT. The correlation between hematocrit levels at admission and preoperative DVT was assessed using linear and nonlinear multivariate logistic regression, according to the adjusted model. All analyzes were performed using EmpowerStats and R software. In total, 1840 patients were included in this study, of which 587 patients (32%) had preoperative DVT. The mean hematocrit level was 34.44 ± 5.64 vol%. Linear multivariate logistic regression models showed that admission hematocrit levels were associated with preoperative DVT (OR = 0.97, 95% CI: 0.95–0.99; p = 0.0019) after adjustment for confounding factors. However, the linear association was unstable, and nonlinearity was identified. An admission hematocrit level of 33.5 vol% was an inflection point for the prediction. Admission hematocrit levels 33.5 vol% were associated with preoperative DVT (OR = 0.94, 95% CI: 25 0.91–0.97, p = 0.0006). Hematocrit levels at admission were nonlinearly associated with preoperative DVT, and hematocrit at admission was a risk factor for preoperative DVT. However, the severity of a low hematocrit was not associated with preoperative DVT when the hematocrit was <33.5 vol%.

Objective: This study aimed to evaluate the association between serum phosphorus level and preoperative deep vein thrombosis (DVT) in geriatric hip fractures. Methods: Older adults with hip fractures were screened between January 2015 and September 2019. Demographic and clinical characteristics of the patients were collected. Multivariate binary logistic regression and generalized additive models were used to identify the linear and nonlinear associations between serum phosphorus levels and preoperative DVT. Analyses were performed using Empower Stats and R software. Results: In this study, 1818 patients were included, with an average age of 79.39 ± 6.87. Of these, 30.25% were males, and 580 patients had DVT. The study found that when serum phosphorus was used as a continuous variable, there was a statistically significant difference in the relationship between blood phosphorus and the occurrence of DVT (p < 0.05). Furthermore, we also found curvilinear relationships. Serum phosphorus = 0.71 mmol/L was the inflection point in the curve. When serum phosphorus was 0.71 mmol/L, there was no significant difference in the correlation between serum phosphorus levels and DVT (OR = 1.03; 95% CI: 0.98–1.09; p = 0.186). Conclusion: Serum phosphorus was nonlinearly associated with preoperative DVT in geriatric patients with hip fractures, and serum phosphorus level could be considered a predictor of DVT risk.

Purpose To compare the efficacy of different surgical fixation techniques in the treatment of Haraguchi type II posterior malleolar fractures associated with supination-external rotation. Methods A total of 163 patients with Haraguchi type II posterior malleolar fractures ( 44-B) were retrospectively enrolled in the study, of which 96 and 67 were treated with plates and screws, respectively. For these patients, imaging and clinical findings, functional status, visual analog scale(VAS) for pain, incidence of deep and superficial surgical site infections, intraoperative blood loss, and surgical duration were evaluated and compared. Results No significant differences were identified in American Orthopaedic Foot and Ankle Surgery (AOFAS) scores or deep surgical site infections between the patients treated with plates and those treated with screws. Compared with the screw group, the plate group had more bleeding, a longer surgical duration, and a higher incidence of superficial infections (all cured by changing dressings). However, The plate group had an earlier time to full weight-bearing and a lower incidence of venous thrombosis of the lower extremity. Conclusion Both internal fixation techniques demonstrated good clinical outcomes. The plate group tolerated early weight-bearing training and had a lower incidence of venous thrombosis complications, compared with the screw group. The screw group underwent a less invasive operation and had a lower incidence of infection, making it a good choice for patients with unfavorable skin conditions.