OBJECTIVETo investigate the changes in the afferent discharge activities of the sensory nerve endings in muscle spindles of rats with hindlimb immobilization.

METHODSPlaster cast was used immobilize the hindllimbs of rats. Using air-gap technique, the spontaneous discharge of the muscle spindles and its responses to perfusion with succinylcholine (0.05 mg/ml) and suspension in an extended position were observed in isolated muscle spindles from rats with hindlimb immobilization for 3, 7, and 14 days.

RESULTSThe muscle spindles of rat soleus showed a sharp decrease in spontaneous discharge frequency (P<0.01) and response to succinylcholine perfusion after 3 days of hindlimb immobilization (P<0.05). Significant changes of the firing rate in an extended position was observed in rats after a 14-day immobilization (P<0.01). The duration of individual spikes was significantly prolonged following hindlimb immobilization (P<0.01).

CONCLUSIONMuscle spindle discharges decrease significantly in rats following hindlimb immobilization, which might be related to reduced contractile properties of the muscle spindle.

Animals ; Hindlimb Suspension ; Muscle Spindles ; innervation ; Muscle, Skeletal ; innervation ; Rats

OBJECTIVETo explore the indication law of fourteen channels acupoint that is located in the same nervous segment of T1-T12 on the back and abdomen.

METHODSBy retrieving indications of fourteen channels acupoint that is located in the dominating areas of T1 - T12 in LIN Zhao-geng 's New Collection of Acupuncture-moxibustion and SHEN Xue-yong's Science of meridian-collateral and acupoint, indications of fourteen channels acupoint in the same nervous segment of skin and muscle were statistically managed, respectively.

RESULTSThere was an obvious nervous segmental law of acupoint in the skin and muscle. The acupoint indication of neighboring nervous segment was similar, which was closely related to corresponding internal organs.

CONCLUSIONThe acupoint indication is decided by the space of nervous segment which dominats their related organ. From aspect of nervous structure, this article confirms that acupoint indications focus on nervous segment to carry out the regulation effect of acupoint on internal organs function, which means it has superior regulation effect on internal organs disease that is located in the same or neighboring nervous segment of acupoint.

Abdomen ; innervation ; Acupuncture Points ; Acupuncture Therapy ; Back ; innervation ; Humans ; Meridians

No abstract available.
Female ; Humans ; Hysterectomy/*methods ; *Organ Sparing Treatments ; Pelvis/*innervation ; Rectum/*innervation ; Urinary Bladder/*innervation ; Uterine Cervical Neoplasms/*surgery ; Uterus/*innervation

OBJECTIVETo observe and survey the location of Xiaguan (ST 7), "Die'e" and Quanliao (SI 18) on the surface, and the needling depth and direction from the 3 points to sphenopalatine ganglion.

METHODSFifteen corpses (30 sides) of adult male were fixed by 10% formalin. The lateral areas of face were dissected from the surface to the deep on the 3 acupoints: the electric drill with the kirschner wire punctured towards the sphenopalatine ganglion and extended to the contralateral areas according to different directions of puncturing sphenopalatine ganglion from the 3 acupoints. The corresponding puncturing points of the 3 acupoints were measured by the coordinate location method.

RESULTS(1) Surface location: the distance between Quanliao (SI 18) and "Die'e" was 21 mm and the distance between Xiaguan (ST 7) and "Die'e" was 17 mm; (2) Inserting depth of each point to sphenopalatine ganglion: the depths of Xiaguan (ST 7), "Die'e" and Quanliao (SI 18) were 49.9 mm, 46.9 mm and 46.6 mm, respectively; (3) The coordinate location of the corresponding puncturing points: the puncturing direction of Xiaguan (ST 7) was anterointernal upper corresponding to the area of connecting center between contralateral Taiyang (EX-HN 5) and Tongziliao (GB 1), the distance between the corresponding inserting point of Xiaguan (ST 7) and Sizhukong (TE 23) was 17.6 mm; the puncturing direction of "Die'e" point was posterointernal upper, and the horizontal distance from the corresponding puncture point to the zygomatic arch was 33 mm and the vertical distance from the corresponding puncture point to the eyes' outer canthus was 42 mm; the puncturing direction of Quanliao (SI 18) was posteriointernal upper and the distance between the corresponding inserting point and the area of contralateral parietal tuber, the distance between the corresponding inserting point of Quanliao (SI 18) and the connecting line of bilateral external acoustic pore was 28 mm, the distance between the corresponding inserting point of Quan-liao (SI 18) and the medial line of the head was 62 mm.

CONCLUSIONUnderstanding the surface location, inserting depths and the general puncturing directions of the 3 points can provide basis for puncturing the sphenopalatine ganglion in clinical practice.

Acupuncture Points ; Adult ; Cadaver ; Electroacupuncture ; methods ; Face ; innervation ; Ganglia, Parasympathetic ; anatomy & histology ; physiology ; Humans ; Male ; Palate ; innervation ; Sphenoid Sinus ; innervation

OBJECTIVETo investigate the precise locations of the blood vessels and nerves surrounding the seminal vesicles (SV) in men and provide some anatomical evidence for SV-related minimally invasive surgery.

METHODSWe observed the courses and distribution of the blood vessels and nerves surrounding SVs and obtained the data for positioning the SV neuroplexes in 20 male pelvises.

RESULTSOne branch of the neuroplexes was distributed to the SVs bilaterally with the neurovascular bundles, (2.85 ± 0.18) cm from the median sulcus of the prostate (MSP), while another branch ran through the Denonvillier fascia behind the SV, (0.81 ± 0.06) cm from the MSP. The arterial SVs (ASV) originated from the inferior vesical artery and fell into 4 types, 55% going directly to the SVs as one branch, 15% running between the SV and the ampulla of the deferent duct as another branch, 25% downward as 2 branches to the SV and between the SV and the ampulla of the deferent duct respectively, and 5% as the other ASVs. The shortest distance from the ASV through the prostatic neuroplexus to the posterior SV was (1.08 ± 0.09) cm.

CONCLUSIONIn SV resection, neuroplexus injury can be reduced with a bilateral distance of < 2.85 cm and a posterior distance of < 0.81 cm from the MSP, and so can bleeding by vascular ligation between the SV and the ampulla of the deferent duct.

Biopsy ; Humans ; Male ; Prostate ; blood supply ; innervation ; Seminal Vesicles ; blood supply ; innervation ; Vas Deferens ; blood supply ; innervation

OBJECTIVE: To explore the reasons of poor sensation recovery after anterolateral thigh flap (ALTF) transplantation and to improve the design and sensation reconstruction of ALTF. METHODS: Lower limbs from 21 adult cadavers were chosen, and the lateral femoral cutaneous nerves (LFCN) were dissected. Their courses, shape, distribution and anatomic variation were observed, the distance from original sites of LFCN's posterior and anterior branches to the anterior superior iliac spine (ASIS) were measured, and the external diameter of their main trunks,after piercing out from the inferior margin of inguinal ligament or sending out their posterior branches and their anterior branches, were measured. RESULTS: The plane which the posterior branches sent out from the LFCN located at 4.8 (0~16.9) cm below the ASIS. The plane which the anterior branches sent out from the LFCN located at 14.2 (6.7~24.1) cm below the ASIS. There were 6 branches of the LFCN, namely ordinary three branches (9/21), high-level posterior branch (5/21), posterior branch absent (3/21), anterior branch absent (1/21), tiny branch, (2/21) and LFCN absent (1/21). The section of the LFCN was oblate, the external diameter of the LFCN,s main trunk after piercing out from the inferior margin of inguinal ligament or sending out its posterior branch and its anterior branch was 2.68 (1.18-4.52) mm, 2.18 (0.80-4.10) mm and 1.63 (0.44-2.60) mm, respectively. CONCLUSION Poor sensation recovery after ALTF transplantation is due to anatomic variation of the posterior branch of the LFCN. The sensory recovery of ALTF may be improved if the 2/3 low to median part of the anterolateral thigh and the main trunk of the LFCN or its plane before sending out the anterior branch is chosen for anastomosis.
Cadaver ; Female ; Humans ; Ilium ; anatomy & histology ; Inguinal Canal ; anatomy & histology ; Male ; Skin ; innervation ; Surgical Flaps ; innervation ; Thigh ; innervation

OBJECTIVETo investigate the route and scope of the facial nerve in the temporal region for clinical applications.

METHODSTemporal region dissection was performed on 12 cadavers (24 sides) under light microscope.

RESULTSThere are two branches of the facial nerve in the temporal region from the superior margin of the parotid: the temporal branch and the zygomatic branch. Each of them has two to five branches, which run in the deep layer of the superficial temporal fascia. The temporal branch crosses the zygomatic arch to the temporal region, innervating the frontal muscle, the orbicularis oculi muscle, the corrugator supercilii muscle, and the muscle surrounding the ear, etc. The zygomatic branch goes to the lateral canthus, innervating the orbicularis oculi muscle, the upper and lower eyelid and zygomatic muscles. There are communicating branches among the temporal branches, the zygomatic branches and the supraorbital and lacrimal nerves of the ophthalmic nerve.

CONCLUSIONThe temporal branches and zygomatic branches of the facial nerve run between the deep zone of the superficial temporal fascia and the superficial layer of the profound temporal fascia, where dissection should be avoided during rhytidectomy in order not to damage the facial nerve branches.

Cadaver ; Dissection ; Eyelids ; innervation ; Facial Muscles ; innervation ; Facial Nerve ; anatomy & histology ; Fascia ; innervation ; Humans ; Parotid Gland ; anatomy & histology ; Rhytidoplasty ; Subcutaneous Tissue ; innervation ; Temporal Bone ; Zygoma

OBJECTIVEAlthough most of nerve injuries associated with Monteggia fracture-dislocation in children are neurapraxias and will recover spontaneously after conservative treatment, surgical exploration of the involved nerve is always required in the cases with the entrapment of posterior interosseous nerve (PIN). However, the necessity and time frame for surgical intervention for specific patterns of nerve dysfunction remains controversial. The aim of the report is to observe and understand the pathology of PIN injury associated with Monteggia fracture-dislocation in children, and to propose the possible indication for the exploration of nerve.

METHODSEight cases, six boys and two girls, with Monteggia fracture-dislocation complicated by PIN injury, managed operatively at the authors?Hospital from 2007 to 2008 were retrospectively reviewed. All the patients underwent the attempted closed reduction before they received exploration of PIN, with open reduction and internal fixation or successful closed reduction.

RESULTSThe PIN was found to be trapped acutely posterior to the radiocapitellar joint in 4 out of 5 Type III Bado's Monteggia fractures. In the remaining cases, since there were longer time intervals from injury to operation, chronic compressive changes and epineural fibrosis of radial nerve were visualized. After a microsurgical neurolysis performed, the complete recovery in the nerve function was obtained in all the cases during the follow-up.

CONCLUSIONThe findings from this study suggest that every case of type III Monteggia fracture-dislocation with decreased or absent function of muscles innervated by PIN and an irreducible radial head in children should be viewed as an indication for immediate surgical exploration of the involved nerve to exclude a potential PIN entrapment.

Female ; Fingers ; innervation ; Fracture Fixation, Internal ; Humans ; Male ; Monteggia's Fracture ; complications ; Muscle, Skeletal ; innervation ; Nerve Compression Syndromes ; etiology ; surgery ; Recovery of Function ; Retrospective Studies ; Thumb ; innervation ; Wrist ; innervation

Adult ; Foot ; innervation ; surgery ; Humans ; Male ; Soft Tissue Injuries ; surgery ; Sural Nerve ; surgery ; Surgical Flaps ; innervation

This review focuses on our effort in addressing the development and lesion-induced plasticity of the gravity sensing system. After severance of sensory input from one inner ear, there is a bilateral imbalance in response dynamics and spatial coding behavior between neuronal subpopulations on the two sides. These data provide the basis for deranged spatial coding and motor deficits accompanying unilateral labyrinthectomy. Recent studies have also confirmed that both glutamate receptors and neurotrophin receptors within the bilateral vestibular nuclei are implicated in the plasticity during vestibular compensation and development. Changes in plasticity not only provide insight into the formation of a spatial map and recovery of vestibular function but also on the design of drugs for therapeutic strategies applicable to infants or vestibular disorders such as vertigo and dizziness.
Animals ; Humans ; Neuronal Plasticity ; Neurons ; physiology ; Otolithic Membrane ; innervation ; physiology ; Vestibule, Labyrinth ; innervation ; physiology