Department of Orthopaedics and Trauma Surgery, Campus Bio-Medico University of Rome, Rome, Italy.
Surgeon. 2012 Feb;10(1):20-4. doi: 10.1016/j.surge.2011.01.001. Epub 2011 Feb 9.
We report the results of a longitudinal study of 40 patients with osteoarthritis who had primary prosthetic replacement without patellar resurfacing, and were followed at 6 months postoperatively with a densitometric study and clinically at a minimum follow-up of 2 years. Densitometric analysis showed a mean preoperative density at the affected knee of 0.69 g/cm(2) (CI: 0.62-0.76), compared to 0.86 g/cm(2) (CI: 0.79-0.93) for the opposite knee (p = 0.002). In our study population, the return to load and motion to the retained patella led to a significant increase in patellar bone density as measured by densitometry studies. This observation correlated with significant improvement in knee functional score.
我们报告了一项对 40 例原发性膝关节置换术（未行髌骨表面置换）的骨关节炎患者的纵向研究结果，这些患者在术后 6 个月接受了密度测定研究，并进行了至少 2 年的临床随访。密度测定分析显示，患侧膝关节术前平均密度为 0.69 g/cm²（置信区间：0.62-0.76），而对侧膝关节为 0.86 g/cm²（置信区间：0.79-0.93）（p = 0.002）。在我们的研究人群中，保留的髌骨承受负荷和运动的恢复导致髌骨骨密度的显著增加，这可以通过密度测定研究来衡量。这一观察结果与膝关节功能评分的显著改善相关。
