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PubMed1980

Lateral approach to the upper cervical spine.

A procedure for access to the ventral portion of the spinal canal from the foramen magnum to the superior portion of C-3 is described. This is useful for lesions that are primarily ventral or ventrolateral to the spinal cord, such as meningiomas or neurofibromas. The exposure involves no more bone removal than does a posterior laminectomy, but the angle of approach reduces markedly the amount of spinal cord manipulation necessary to deal with ventrally situated lesions.

Cervical Vertebrae↗
PubMed2003

No effects of cervical spine motion on cranial dura mater strain.

OBJECTIVE: The aim of this study was to analyze the effects of cervical spine motion on cranial dura mater length variations in anatomical specimens using high-resolution linear displacement transducers. We hypothesized that transducer resolution was sufficient to measure dura mater length changes if they occurred during cervical spine motion. DESIGN: Cranial dura mater strain was measured using differential variable reluctance transducers during cervical spine motion in 11 formaldehyde-fixed whole-body anatomical specimens (mean age: 82 years). BACKGROUND: Several theories hypothesize that functional maneuvers carried out on the spine have an effect on intra-cranial structures due to the supposed continuity of spinal and cranial dura mater. The displacements of the spinal dura mater are supposed to be transmitted to the cranial dura mater. METHODS: Eleven anatomical specimens were used. Each specimen (positioned supine) was provided with three openings in the skull (frontal and parietal regions), leaving the dura mater intact. A differential variable reluctance transducer was inserted in frontal or sagittal orientation in the dura mater exposed in each opening. Strain was recorded during cyclic motions of cervical spine flexion-extension, lateral bending and axial rotation. RESULTS: Average length changes ranged from 0.01 to 0.13% (SD 0.01-0.21%) of initial length for all motions and locations studied, which in all cases was less than the accuracy of the transducers. CONCLUSION: It can thus be concluded that cervical spine motion does not induce significant strain of the cerebral dura mater. RELEVANCE: The present study does not support theories that are based on the transmission of strains from spinal to cranial dura mater.

Aged↗
PubMed1993

Thoracic disc herniations.

Because of the protean nature of thoracic disc disease, surgeons should maintain a high order of suspicion of a thoracic disc herniation in the patient with unexplained localized back or torso pain and sensorimotor deficits. These patients should have MR imaging performed as a screening test, and, if suspicious for a thoracic disc herniation, confirmatory myelogram and postmyelogram CT imaging. Though the natural history is anecdotal, there appears to be a tendency for myelopathic symptoms and signs to be progressive, warranting surgical intervention. For radicular dysfunction or localized back pain, a conservative therapeutic plan is recommended. If intractable pain is demonstrated, and the diagnosis is certain, then surgical intervention is recommended. Once surgical intervention is recommended the surgical approach needs to be individualized according to the surgeon's skills and experience and the specifics of the patient's pathology. Appropriate surgical decision-making depends on an understanding of the variety of surgical options and their advantages and disadvantages, and an understanding of the biomechanical factors of the spine of the individual patient. Surgical concepts important to successful thoracic disc removal are (1) minimal spinal cord manipulation, (2) preservation of the neurovascular supply whenever possible, (3) minimal manipulation of the intercostal nerve, and (4) preservation of maximal bony and ligamentous attachments allowable for adequate exposure. Lastly it is recommended that the posterior longitudinal ligament be removed to ensure complete spinal cord decompression.

Adult↗
PubMed1999

Music therapy and chiropractic: an integrative model of tonal and rhythmic spinal adjustment.

There is a philosophical basis for the integration of treatment using music therapy and chiropractic. Perception is intimately linked to the nervous system. A relationship between spinal integrity and consciousness does exist. We can see that as spinal distortions diminish and awareness increases, there is a natural attraction toward the higher or more loving state of consciousness. Rhythms of healing and suffering are a key concept in combining music therapy with chiropractic manipulation. Donald Epstein's conceptualization of the rhythmic stages of consciousness corresponding to prescribed physiological patterns serves as a starting point for the use of rhythm in the healing process. Using interactive music, the music therapist can help facilitate a change in the patient's physical or emotional state. This occurs when the practitioner establishes an initial connection or musical validation of the patient's emotional state and assists the healing process by improvising supportive music while suggesting possibilities for resolution. We believe that the power of music can be used as a significant tool in chiropractic work to aid individuals in their healing process.

Chiropractic↗
PubMed2002

Reversal of the signs and symptoms of moderately severe idiopathic scoliosis in response to physical methods.

This report describes improved signs and symptoms of previously untreated symptomatic spinal deformity in an adult female diagnosed with moderately severe thoracic scoliosis at the age of .7 years. Current treatment initiated at the age of forty included massage therapy, manual traction, ischemic pressure, and comprehensive manipulative medicine (CMM). A left-right chest circumference inequity was reduced by >10 cm, in correlation with improved appearance of the ribcage deformity and a 40% reduction in magnitude of Cobb angle, which had been stable for 30 years. The changes occurred gradually over an eight-year period, with the most rapid improvement occurring during two periods when CMM was employed.

Adolescent↗
PubMed2002

Repair of ventral root avulsions of the brachial plexus: a review.

Traumatic root avulsions of the brachial plexus constitute a devastating lesion resulting in loss of function of the upper limb and carry a large emotional and socioeconomic impact. In this literature survey, the different factors involved in root avulsion are discussed in combination with various surgical techniques for repair of experimental ventral root avulsion. Until now repair of root avulsions did not generate unequivocal proof of recovery of limb function, particularly of the hand. More experimental studies are needed to assess the efficacy of several repair techniques, the optimal timing for surgery, and the complications associated with spinal cord manipulation.

Animals↗
PubMed1997

Changes in brain function after manipulation of the cervical spine.

OBJECTIVE: To ascertain whether manipulation of the cervical spine is associated with changes in brain function. DESIGN: Physiological cortical maps were used as an integer of brain activity before and after manipulation of the cervical spine in a large (500 subjects), double-blind controlled study. SETTING: Institutional clinic Participants: Adult volunteers. INTERVENTION: Five hundred subjects were divided into six comparative groups and underwent specific manipulation of the second cervical motion segment. Blinded examiners obtained reproducible pre- and postmanipulative cortical maps, which were subjected to statistical analysis. MAIN OUTCOME MEASURES: Brain activity was demonstrated by reproducible circumferential measurements of cortical hemispheric blind-spot maps before and after manipulation of the second cervical motion segment. Twelve null hypotheses were developed. The critical alpha level was adjusted in accordance with Bonferroni's theorem to .004 (.05 divided by 12) to reduce the likelihood of wrongly rejecting the null hypothesis (i.e., committing a Type I error). RESULTS: Manipulation of the cervical spine on the side of an enlarged cortical map is associated with increased contralateral cortical activity with strong statistical significance (p < .001). Manipulation of the cervical spine on the side opposite an enlarged cortical map is associated with decreased cortical activity with strong statistical significance (p < .001). Manipulation of the cervical spine was specific for changes in only one cortical hemisphere with strong statistical significance (p < .001). CONCLUSIONS: Accurate reproducible maps of cortical responses can be used to measure the neurological consequences of spinal joint manipulation. Cervical manipulation activates specific neurological pathways. Manipulation of the cervical spine may be associated with an increase or a decrease in brain function depending upon the side of the manipulation and the cortical hemisphericity of a patient.

Adult↗
PubMed1999

Does the right side know what the left is doing?

Following peripheral-nerve lesions there are well-documented events that affect the contralateral nonlesioned structures. These contralateral effects are qualitatively similar to those occurring at the ipsilateral side, but are usually smaller in magnitude and have a briefer time course. It is unclear whether the findings are an epiphenomenon or serve a biological purpose, but in either case the existence of these effects implies the presence of unrecognized signalling mechanisms that link the two sides of the body. Strong circumstantial evidence argues against a peripheral mechanism (for example, via circulating factors) and in favour of a central mechanism, in particular signalling via the system of commissural interneurons that is present in spinal cord and brainstem. While an altered pattern of activity in this system might underlie the phenomenon, there are several reasons for proposing that the changes depend upon chemical signals, possibly growth factors. Because of its relative easy access for experimental manipulation, the spinal cord could serve as a model system to study these transmedian signalling systems.

Animals↗
PubMed2001

Influence of standardized mobilization on the posteroanterior stiffness of the lumbar spine in asymptomatic subjects.

BACKGROUND AND PURPOSE: Spinal mobilization is commonly used to relieve pain and assist recovery of mobility in individuals with low back pain. Fundamental to this concept is the belief that spinal mobilization will influence the mechanical properties of the symptomatic motion segment. The objective of the present study was to examine the segmental effects of a standardized mobilization procedure on the posteroanterior (PA) stiffness of the lumbar spine. METHOD: Audio and visual feedback was used to train a physiotherapist to perform PA mobilization at a consistent load and frequency. After training, twenty-four subjects without low back pain were recruited for the intervention phase of the study. The spinal posteroanterior mobilization (SPAM) apparatus was used to measure the PA stiffness of the lumbar spine at three measurement sites (L1, L3 and L5). The trained physiotherapist then applied the standardized PA mobilization technique via the L3 spinous process for two minutes. Following mobilization, PA stiffness was measured three times at the three locations. RESULTS: The physiotherapist was able to apply a standardized mobilization with a mean force of 146 N (standard deviation (SD) 8 N) at a frequency of 1.5 Hz. The first trial on each assessment demonstrated a pre-condition effect. Two minutes' PA mobilization resulted in no significant change in the PA stiffness of the lumbar spine at the level to which the mobilization was applied, or at the L1 and L5 segments. The 95% confidence intervals (CI) of the difference in PA stiffness before and after testing included zero at each measurement site. CONCLUSIONS: Clinicians should pre-condition the spine when assessing PA stiffness both before and after interventions. A standardized mobilization of 150 N at 1.5 Hz for two minutes had no segmental effect on spinal PA stiffness. Subsequent studies need to consider other mechanisms that may contribute to the changes that occur after PA spinal mobilization.

Adult↗
PubMed2005

[Evaluation and treatment of congenital scoliosis with split cord malformation].

OBJECTIVE: To discuss the diagnosis and surgical treatment of congenital scoliosis (CS) with split cord malformation (SCM). METHODS: From May 1999 to June 2004, 353 cases of CS were admitted, and 58 cases were diagnosed CS combined with SCM via myelography and (or) CTM. According to Pang's classification for SCM, patients were divided into type I SCM and type II SCM. Two cases gave up operation, and surgeries were performed in 56 patients. Except that one case with arachnoid cyst underwent intraspinal exploration, all other 55 cases underwent spinal correction without dealing with the intraspinal abnormalities. Clinical manifestation, radiological findings, operative methods and results were retrospectively analyzed in this paper. RESULTS: There were 11 patients (19%) with type I SCM and 47 patients (81%) with type II SCM. In the 56 cases who had surgical treatment, the Cobb angle in the patients with type I SCM (11 cases) was (60 +/- 25) degrees, and in type II SCM (45 cases) was (67 +/- 21) degrees pre-operation. The Cobb angle in type I SCM was (29 +/- 13) degrees and in type II SCM was (39 +/- 19) degrees post-operation, with the correction rate (51 +/- 17)% and (41 +/- 24)% respectively. No statistic differences were found between both types. And there were no new neurological deficits in both groups after the spinal correction operation. After average 17.3 months (4-59 months) follow-up, the correction loss was (6 +/- 10) degrees, (5 +/- 8) degrees in 7 patients with type I SCM and (6 +/- 10) degrees in 19 patients with type II SCM. There was no statistic difference in correction loss between both types. In the follow-up, the neurological symptoms and signs of the patients were stable. CONCLUSION: Considering the incidence of intraspinal anomalies in patients with congenital scoliosis, intraspinal examination via myelography, CTM or MRI should be performed prior to spinal correction surgery. For congenital scoliosis with type I SCM, the bone spur need not be excised before spinal correction if there is no signs of spinal cord tethered and the bone spur locate in the middle of the split cord where there are much space to accommodate it. For congenital scoliosis with type II SCM, if there are no progressive neurological manifestations, the split cord in the single tubular can tolerate the manipulation of spinal correction as the normal spinal cord.

Adolescent↗
PubMedDate not supplied

Effects of side-posture positioning and side-posture adjusting on the lumbar zygapophysial joints as evaluated by magnetic resonance imaging: a before and after study with randomization.

OBJECTIVE: To test the a priori hypothesis that one of the positive mechanisms of action of chiropractic side-posture manipulation (adjusting) of the lumbar spine is to separate, or gap, the zygapophysial (Z) joints. DESIGN: Before and after study with randomization. SETTING: Chiropractic college clinic and magnetic resonance imaging (MRI) facility. PARTICIPANTS: Sixteen healthy student volunteers (8 men and 8 women) ages 22 to 29 years with no history of significant low back pain. Nineteen volunteers were screened, with 3 disqualified from the study. Subjects were randomized into 4 groups, each with 2 men and 2 women. INTERVENTIONS: Lumbar side-posture spinal adjusting (manipulation) and side-posture positioning. MAIN OUTCOME MEASURES: Comparison of anterior to posterior measurements of the Z joints from MRI scans taken before and after side-posture spinal adjusting and before and after side-posture positioning, and a rigorous subjective evaluation protocol of the Z joints by 3 radiologists blinded to the randomized groups. MAIN RESULTS: Observers making measurements were blinded to what group subjects were placed in and whether they were measuring first or second scans; radiologists were blinded to what group subjects were assigned. Differences were found between the groups. Those receiving side-posture spinal adjusting and remaining in side posture showed the greatest increase in gapping (0.7 mm vs 0.0 mm for controls). CONCLUSIONS: Lumbar side-posture spinal adjusting produced increased separation (gapping) of the zygapophysial joints. Side-posture positioning also produced gapping, but less than that seen with lumbar side-posture adjusting. A larger clinical trial should be performed to further define the results of this study.

Adult↗
PubMed2006

Randomized controlled trial of specific spinal stabilization exercises and conventional physiotherapy for recurrent low back pain.

STUDY DESIGN: Pragmatic, multicentered randomized controlled trial, with 12-month follow-up. OBJECTIVE: To evaluate the effect of adding specific spinal stabilization exercises to conventional physiotherapy for patients with recurrent low back pain (LBP) in the United Kingdom. SUMMARY OF BACKGROUND DATA: Spinal stabilization exercises are a popular form of physiotherapy management for LBP, and previous small-scale studies on specific LBP subgroups have identified improvement in outcomes as a result. METHODS: A total of 97 patients (18-60 years old) with recurrent LBP were recruited. Stratified randomization was undertaken into 2 groups: "conventional," physiotherapy consisting of general active exercise and manual therapy; and conventional physiotherapy plus specific spinal stabilization exercises. Stratifying variables used were laterality of symptoms, duration of symptoms, and Roland Morris Disability Questionnaire score at baseline. Both groups received The Back Book, by Roland et al. Back-specific functional disability (Roland Morris Disability Questionnaire) at 12 months was the primary outcome. Pain, quality of life, and psychologic measures were also collected at 6 and 12 months. Analysis was by intention to treat. RESULTS: A total of 68 patients (70%) provided 12-month follow-up data. Both groups showed improved physical functioning, reduced pain intensity, and an improvement in the physical component of quality of life. Mean change in physical functioning, measured by the Roland Morris Disability Questionnaire, was -5.1 (95% confidence interval -6.3 to -3.9) for the specific spinal stabilization exercises group and -5.4 (95% confidence interval -6.5 to -4.2) for the conventional physiotherapy group. No statistically significant differences between the 2 groups were shown for any of the outcomes measured, at any time. CONCLUSIONS: Patients with LBP had improvement with both treatment packages to a similar degree. There was no additional benefit of adding specific spinal stabilization exercises to a conventional physiotherapy package for patients with recurrent LBP.

Adolescent↗
PubMed2000

Reflex effects of subluxation: the autonomic nervous system.

BACKGROUND: The collective experience of the chiropractic profession is that aberrant stimulation at a particular level of the spine may elicit a segmentally organized response, which may manifest itself in dysfunction within organs receiving autonomic innervation at that level. This experience is at odds with classic views of neuroscientists about the potential for somatic stimulation of spinal structures to affect visceral function. OBJECTIVE: To review recent findings from basic physiologic research about the effects of somatic stimulation of spinal structures on autonomic nervous system activity and the function of dependent organs. DATA SOURCE: Findings were drawn from a major recent review of the literature on the influences of somatic stimulation on autonomic function and from recent original physiologic studies concerning somatoautonomic and spinovisceral reflexes. CONCLUSIONS: Recent neuroscience research supports a neurophysiologic rationale for the concept that aberrant stimulation of spinal or paraspinal structures may lead to segmentally organized reflex responses of the autonomic nervous system, which in turn may alter visceral function.

Autonomic Nervous System↗
PubMed2000

[Temporary instrumentation in dixlocations, subluxations and fractures of the lower cervical spine].

The anterior interbody fusion with instrumentation seems to be the standard procedure in unstable traumatic lesions of the lower cervical spine. The goal of this study was to objective the outcome of patients, treated by only temporary stabilisation of the injured motion segment (without bone-graft fusion). Between 1990 and 1998 155 patients with traumatic lesions of the cervical spine were treated operatively, in 22 cases transfixation of the injured level without bone-graft application was performed, an implant-removal was carried out in 12 patients so long. Only patients were included into the study, who were less then 45 years old at trauma and who had no trauma related osseous or disc encrouchment of the spinal canal. Not included were patients with degenerative formations of the cervical spine at time of trauma. Until follow up all patients with implantat removal returned back to work in their former profession, 11 of 12 patients classified their result as excellent or good. No secondary instabilities or postraumatic disc prolapse were observed. Restmobility in flexion/extension of the injured level was demonstrated in 8 patients. The preservation of traumatized motion segments may reduce the incidence of degenerative alterations and hypermobilities in adjacent levels. The transfixation technique in anterior procedures leads to a reduced time of spinal exposure, complications as a result of spinal graft manipulation, pseudarthrosis or donor graft site problems are no more relevant.

Adult↗
PubMed1999

The effect of spinal instrumentation on lumbar intradiscal pressure.

The purpose of this study was to investigate the effect of spinal instrumentation on the intradiscal pressure (IDP) within the fixed motion segment. In vitro biomechanical testing was performed in six single functional spinal units of fresh calf lumbar spines using a pressure needle transducer. Various loads were applied by a materials testing system device. In addition to intact spine (control), anterior spinal instrumentation (ASI) and pedicle screw fixation (PS) constructs, as well as destabilized spine were tested. Relative to the control, the destabilized spine tended to have an increased IDP; by 15% in axial compression and by 9-36% in flexion-extension. Compared to the control, PS decreased the IDP by 23% in axial loading and 51% in extension loading and increased it by 60% in flexion for each loading. ASI decreased the IDP by 32% in flexion and 1% in extension. Lateral bending produced symmetrical changes of IDP in the control and destabilized spine, but no change in the PS construct. The IDP of the ASI construct was decreased by 77% in ipsilateral bending and increased by 22% in contralateral bending. These results demonstrated that eccentric loading from the spinal instruments increased IDP and significant disc pressure may still exist despite an increase in motion segment stiffness after lumbar stabilization.

Animals↗