Clinical Effect of Knee Arthroscopy Combined with Liuwei Gubi Pill in Treating Middle-aged and Elderly Patients with Degenerative Meniscus InjuryZike He, Kaifei He and Shangzeng WangE3S Web Conf., 185 (2020) 03019DOI: https://doi.org/10.1051/e3sconf/202018503019