Department for Orthopaedic Surgery, University Medical Centre Maribor, 5 Ljubljanska Street, SLO-2000, Maribor, Slovenia.
Faculty of Medicine, University of Maribor, 8 Taborska Street, SLO-2000 Maribor, Slovenia.
Int Orthop. 2021 Apr;45(4):877-881. doi: 10.1007/s00264-020-04812-6. Epub 2020 Sep 16.
Revision of a well-fixed stem due to unexpected modular neck fracture is a catastrophe for the patient and a challenge for the surgeon. This study aimed to test the possibility of predicting interchangeable neck fracture from serum levels of the stem/neck alloy-consisting metals.
Nineteen patients at high risk for interchangeable neck fracture were randomly selected out of a cohort of 680 bimodular stems made from Ti6Al4V alloy. Serum levels of titanium, aluminium and vanadium were determined. Nine age- and gender-matched patients were used as controls.
Mean serum levels of Ti were 6.04 ± 2.52 μg/L, of Al 3.89 ± 1.68 μg/L and of V 0.07 ± 0.04 μg/L in the high-risk group, and 8.22 ± 4.74 μg/L, 4.99 ± 3.98 μg/L and 0.27 ± 0.44 μg/L in the low-risk group, respectively. No statistically significant differences were found between the groups.
Interchangeable neck fracture of bimodular femoral stems cannot be predicted from serum trace element analysis.
由于意外的模块化颈部骨折而对已固定良好的柄进行翻修，对患者来说是一场灾难，对外科医生来说也是一个挑战。本研究旨在测试通过柄/颈部合金组成金属的血清水平来预测可互换颈部骨折的可能性。
从由 Ti6Al4V 合金制成的 680 个双模块化柄的队列中随机选择了 19 名有发生可互换颈部骨折高风险的患者。测定了钛、铝和钒的血清水平。使用 9 名年龄和性别匹配的患者作为对照。
高危组的 Ti 血清平均水平为 6.04±2.52μg/L，Al 为 3.89±1.68μg/L，V 为 0.07±0.04μg/L，低危组分别为 8.22±4.74μg/L、4.99±3.98μg/L 和 0.27±0.44μg/L。两组间无统计学差异。
无法通过血清微量元素分析预测双模块化股骨柄的可互换颈部骨折。
