As a common disease in clinical, the treatment of lumbar disc herniation (LDH) focused on local intervertebral disc, such as surgery and other interventional therapy treatment, but postoperative complications and recurrence rate has been a difficult problem in the field of profession. With the development of spine biomechanics and anatomy, researches on lumbar herniation also increased. Researchers discovered that the incidence and prognosis of LDH were inseparable with local muscle and soft tissue. As the deep paraspinal muscles, multifidus muscle plays an important role to make lumbar stability. Its abnormal function could reduce the stable of lumbar spine, and the chronic lumbar disease could also lead to multifidus muscle atrophy.
Animals ; Humans ; Intervertebral Disc Displacement ; physiopathology ; surgery ; Lumbosacral Region ; physiopathology ; surgery ; Paraspinal Muscles ; physiopathology

OBJECTIVETo investigate the relationship between the existence of occlusal interference and masticatory muscle hyperalgesia by exploring the stimulus-response relationship between the duration of occlusal interference and masticatory muscle mechanical withdrawal threshold.

METHODSOcclusal interference with 0.4 mm-thick crowns on rat molars was removed under anaesthesia at 2, 3, 4, 5, and 6 d after wear, and masticatory muscle mechanical withdrawal threshold was tested at 1, 3, 5, 7, 10, 14, 21 and 28 d.

RESULTSDecreased mechanical withdrawal thresholds were detected in temporal muscles and masseter muscles on both sides following occlusal interference (P < 0.05). After removal of crowns at 2, 3, 4 and 5 d, rats exhibited the similar head withdrawal thresholds as the sham-application control in masticatory muscles on both sides at 10, 14, 14 and 21 d (P > 0.05). No significant differences were detected between the contralateral side with the ipsilateral side (P < 0.05). After removal of crowns at 6 d, rats still exhibited significantly decreased head withdrawal thresholds[right temporal muscle: (1.365±0.018) N; right masseter: (1.437 ± 0.024) N] in masticatory muscles on both sides until the last day of the experiment[the sham-application control: right temporal muscle: (1.554±0.040) N, P < 0.001; right masseter: (1.546±0.019) N, P < 0.001].

CONCLUSIONSThe mechanical hyperalgesia can disappear after removal of the occlusal interference at 5 d, and the existence of the occlusal interference is positively correlated with the duration of the mechanical hyperalgesia.

Animals ; Hyperalgesia ; physiopathology ; Masseter Muscle ; physiopathology ; Masticatory Muscles ; Molar ; Rats ; Temporal Muscle ; physiopathology

Adolescent ; Brachial Plexus ; physiopathology ; Encephalitis ; diagnosis ; physiopathology ; Facial Muscles ; physiopathology ; Humans ; Male

Adult ; Back Muscles ; physiopathology ; Fasciitis ; physiopathology ; therapy ; Female ; Humans ; Male ; Moxibustion ; Muscular Diseases ; physiopathology ; therapy

Deglutition ; physiology ; Deglutition Disorders ; physiopathology ; Humans ; Muscles ; physiopathology ; Stroke ; physiopathology ; Viscosity

The efficacy of acupuncture for pain diseases is significant, however, the unified understanding re garding mechanisms of acupuncture analgesia has not been fully reached. In this paper, it is believed that uncoordi nated muscle movement is one of the important causes for pain, while acupuncture could enhance the contact of nerve cells and improve the synergy of muscle movement, so as to achieve the aim of pain relief and even cure.
Acupuncture Analgesia ; Humans ; Muscle Contraction ; Muscles ; physiopathology ; Pain Management

OBJECTIVETo compare the differences of therapeutic effect of cervical spondylosis of neck type treated with acupuncture at starting and ending points of trapezius and the Jiaji (EX-B 2) points.

METHODSSixty cases of cervical spondylosis of neck type were randomly divided into an observation group and a control group, 30 cases in each group. In observation group, the acupoints related with starting and ending points of trapezius, such as Tianzhu (BL 10), Fengchi (GB 20), Quyuan (SI 13), Jugu (LI 16) and Ashi were punctured; in control group, Jiaji (EX-B 2) points of neck were punctured. The treatments were applied 5 times a week and 2 weeks made one course. The international simplified McGill scale was adoped to assess the scores of Pain Rating Index (PRI), Visual Analogue Scale (VAS) and Present Pain Intensity (PPI) before treatment and after one course treatment, and the therapeutic effects were measured.

RESULTSAfter treatment, all the scores were obviously reduced in both groups: (all P < 0.01), and the PRI-sensory subscore, PRI-affective subscore and total score in observation group reduced more obviously than those in control group, and there were statistically significant differences between groups (all P < 0.01). There were no statistically significant differences between groups in VAS and PPI score (both P > 0.05). The total effective rate of 96.7% (29/30) in observation group was superior to that of 70.0% (21/30) in control group (P < 0.01).

CONCLUSIONThe therapeutic effect of cervical spondylosis of neck type treated with acupuncture at the starting and ending points of trapezius is positive, which is better than that of acupuncture at the Jiaji (EX-B 2) points.

Acupuncture Points ; Acupuncture Therapy ; Adult ; Female ; Humans ; Male ; Middle Aged ; Neck Muscles ; physiopathology ; Spondylosis ; physiopathology ; therapy

OBJECTIVEAn electric monitor of bruxism had been invented in order to evaluate the curative effect of cuspid occlusal upheaving splint and stabilization splint.

METHODS20 patients with bruxism were randomly divided into two groups. A cuspid occlusal upheaving splint or a stabilization splint was fabricated respectively for patients. The vertical dimension for each splint was 0.5 mm lower than mandibular postural position. Sleeping time, bruxist time and times of bruxism were recorded with bruxism monitor that was invented for studying bruxing.

RESULTSThe bruxist time and the times of bruxism were decreased obviously in patients with cuspid occlusal upheaving splint, while no significant difference was shown before and after using the stabilization splint.

CONCLUSIONSThe bruxism monitor can automatically measure and record the data of bruxism with splint, which is valuable for clinic. The curative effect of cuspid occlusal upheaving splint is better than that of stabilization splint for treating bruxism.

Adult ; Bruxism ; physiopathology ; therapy ; Electromyography ; Female ; Humans ; Male ; Masticatory Muscles ; physiopathology ; Occlusal Splints

OBJECTIVETo investigate the usefulness of electromyogram (EMG) in the diagnosis of the patients with hemimasticatory spasm (HMS).

METHODSFour cases with HMS were reported. All the 4 patients were undertaken needle and surface electrode EMG examination.

RESULTSNeedle electrode EMG of the 4 patients with HMS showed grouped potentials synchronously with the onset of the spasm, which indicated abnormal excitatory electrical activities of the trigeminal nerve resulting in involuntary masticatory muscle movements.

CONCLUSIONIt is very important to use EMG for the diagnosis of HMS.

Adult ; Diagnosis, Differential ; Electromyography ; Female ; Humans ; Male ; Masticatory Muscles ; physiopathology ; Middle Aged ; Spasm ; diagnosis ; etiology ; physiopathology

Acupuncture Therapy ; Bloodletting ; Combined Modality Therapy ; Facial Muscles ; physiopathology ; Female ; Humans ; Spasm ; physiopathology ; therapy ; Young Adult