[Clinical Observation of the Proprioceptive Sensibility Reflexotherapy by Tendon Acupuncture at Trigger Points for Cervical Vertigo].

OBJECTIVE: To evaluate the efficacy of the proprioceptive sensibility reflexotherapy by tendon acupuncture needling at trigger points for patients with proprioceptive disorder of cervical vertigo. METHODS: Seventy-nine patients with proprioceptive disorder of cervical vertigo were randomly assigned into a treatment group (42 cases) and a control group (37 cases). Patients in the treatment group received the proprioceptive sensibility reflexotherapy with tendon acupuncture at trigger points in the neck. And those in the control group were given traditional traction, massage and intermediate frequency electro therapy. All the treatment was given for 2 courses, once a day and 10 days as a course. The cervical vertigo symptom and function, the joint position error (JPE) and stability index (ST) before and after treatment were observed in the two groups and the effects were evaluated. RESULTS: The cervical vertigo symptom and function were improved, JPE and ST decreased after treatment in the two groups (all P<0.05), with better results in the treatment group (all P<0.05). CONCLUSIONS: The proprioceptive sensibility reflexotherapy with tendon acupuncture at trigger points is effective for proprioceptive disorder of cervical vertigo.

Sub-pm linewidth nanosecond Nd:GYSGG laser at 1336.6 nm.

We demonstrate a sub-pm linewidth acousto-optic (AO) Q-switched nanosecond Nd:GYSGG ring laser at 1336.6 nm side-pumped by 808-nm quasi-continuous wave (QCW) diode lasers for the first time. With incident pulse energy of 4.23 J at 10 Hz, a maximum output macropulse energy of 36.7 mJ at 1336.6 nm with linewidth of less than 0.85 pm and a micropulse width of 300 ns was obtained at a repetition rate of 80 Hz, corresponding to an average micropulse peak power of 15.3 kW. The M² factors were measured to be 1.42 and 1.10 in x and y directions, respectively. It can be tuned from 1336.576 to 1336.652 nm with a tuning resolution of 1 pm. The 1336.632 nm can be converted to deep ultraviolet (DUV) laser at 167.079 nm through its eighth harmonics, which is very useful for the ²7Al⁺ optical frequency standard.