Dincel Yasar Mahsut, Sari Abdulkadir, Tekin Cagatay, Gunaydin Burak, Cetin Mehmet Umit, Arslan Yunus Ziya
Namık Kemal University, Faculty of Medicine, Department of Orthopedics and Traumatology, Tekirdağ, Turkey.
Istanbul University-Cerrahpasa, Faculty of Engineering, Department of Mechanical Engineering, Istanbul, Turkey.
Acta Ortop Bras. 2020 Sep-Oct;28(5):247-250. doi: 10.1590/1413-785220202805233379.
We aimed to investigate the change in bone mineral density (BMD) in the first postoperative year in patients that underwent total knee arthroplasty (TKA) due to primary osteoarthritis of the knee.
Preoperative and first postoperative year dual-energy X-ray absorptiometry measurements of 76 patients with knee osteoarthritis, who undergone surgery between 2016 and 2018 due to the recommendation for TKA, were statistically evaluated in the study.
Of the 19 patients with a normal BMD in the preoperative period, 73.7% ( = 14) continued to have a normal BMD in the postoperative period. Of the 34 patients with a low BMD (osteopenia) in the preoperative period, 91.2% ( = 31) did not show any change, whereas osteoporosis was observed in two patients (5.9%) in the postoperative period. Of the 23 patients with osteoporosis in the preoperative period, 95.7% ( = 22) did not show any change, whereas osteopenia was observed in one patient (4.3%) in the postoperative period. Both the T and Z scores of the spine (L1-L4) and proximal femur showed a slightly positive trend, however, with an insignificant statistical difference ( ≥ 0.05).
Patients that underwent TKA experienced a statistically insignificant bone gain at the spine and proximal femur twelve months after the surgery.
我们旨在研究因膝关节原发性骨关节炎接受全膝关节置换术（TKA）的患者术后第一年骨密度（BMD）的变化。
本研究对2016年至2018年间因TKA建议而接受手术的76例膝关节骨关节炎患者术前及术后第一年的双能X线吸收法测量结果进行了统计学评估。
术前骨密度正常的19例患者中，73.7%（n = 14）术后骨密度仍正常。术前骨密度低（骨质减少）的34例患者中，91.2%（n = 31）无变化，而术后2例患者（5.9%）出现骨质疏松。术前骨质疏松的23例患者中，95.7%（n = 22）无变化，而术后1例患者（4.3%）出现骨质减少。脊柱（L1-L4）和股骨近端的T值和Z值均呈轻微上升趋势，但差异无统计学意义（P≥0.05）。
接受TKA的患者术后12个月时，脊柱和股骨近端的骨质增加在统计学上无显著意义。
