BZY-A型低频治疗仪选择性刺激股内侧肌治疗髌骨软化症

BZY-A low-frequency electrostimulator for selective stimulation of vastus medialis in treatment of patellar chondromalacia

[目的]观察BZY-A型低频治疗仪选择性刺激股内侧肌治疗髌骨软化症的疗效。[方法]选择63例髌骨软化症患者,随机分成电刺激组与CPM组。电刺激组给予选择性股内侧肌刺激60 min/次,每日2次,持续3个月;而CPM组给予持续被动活动(CMP)治疗。采用VSA评分及Lysholm评分进行两组间比较。[结果]治疗前两组在VAS评分、Lysholm评分的差异,均无统计学意义(P>0.05)。随时间延长,两组患者VAS评分明显减低(P<0.05),而Lysholm评分显著增加(P<0.05),以电刺激组更为明显。治疗后1、3个月时,电刺激组VAS评分明显低于CPM组,而Lysholm评分明显高于CPM组,两组间差异均有统计学意义(P<0.05)。[结论]BZY-A型低频治疗仪选择性刺激股内侧肌治疗髌骨软化症疗效优于使用CPM机,且操作简便、安全。

[Objective] To observe the therapeutic outcomes of the BZY-A low-frequency electrostimulator for selective stimulation of vastus medialis in the treatment of patellar chondromalacia. [Methods] Sixty three patients with patellar chondromalacia were randomly divided into the electrostimulating group and CPM group. The selective stimulation of vastus medialis with the low-frequency electrostimulator was given in the electrostimulating group at 60 min/time twice per day for continuously 3 months, while continuous passive motion （CPM） was applied in the CPM group. The VSA score and Lysholm score were recorded for comparison of the two groups. [Results] Before treatment, there were no significant differences in VAS score and Lysholm score between the two groups （P〉0.05）. The VAS score significantly decreased, while the Lysholm score remarkably increased as time elapsed in both groups （P〈0.05） . At 1 and 3 months after treatment, the VAS score proved significantly less, whereas the Lysholm score statistically higher in the electrostimulating group than the CPM group （P〈0.05）. [Conclusion] The selective stimulation of vastus medialis muscle using this low-frequency electrostimulator is considerably more effective than CPM for patellar chondromalacia, with advantages of easy operation and high safety in clinical setting.