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PubMed2005

Pressures generated during spinal manipulation and their association with hand anatomy.

BACKGROUND CONTEXT: The role of the variation in the application manipulation itself is largely unknown. A greater understanding of its input parameters is necessary to better understand spinal manipulation outcomes. PURPOSE: The objective of this study is to determine if pressures generated during manipulation are altered by hand configuration. DESIGN/SETTING: Paired comparison of 2 different variable groups. METHODS: Sixteen chiropractors provided 2 manipulations to a rigid surface using 2 hand configurations used commonly in clinical practice: arched and flat. Interposed between the hand and the rigid surface was a pressure sensor array and radiographic cassette. For each manipulation, pressures were recorded and a radiographic image was captured. Two radiologists then located the osseous features of the hand with respect to the sensor array. RESULTS: In 15 of 16 cases, arched configurations produced peak pressures that corresponded to the radiographic location of the pisiform bone. In flat configurations, peak pressure migrated about the location of the hamate bone. Radiologists' agreement for bone position was high (kappa = 0.96). Measures of peak pressure, total pressure, and pressure distribution were statistically different between hand configurations. CONCLUSIONS: The results of this study suggest that hand configuration influences the magnitude, location, and distribution of pressure generated by the hand during manipulation. This knowledge may have importance in understanding the relation among application parameters of manipulation, therapeutic benefit, and patient safety.

Adult↗
PubMed1992

Forces generated during spinal manipulative therapy of the cervical spine: a pilot study.

OBJECTIVE: To determine the forces imparted to the cervical spine using direct sampling methods during a clinical episode of spinal manipulative therapy. DESIGN: Quantitative study. SETTING: Human Performance Laboratory, University of Calgary. PARTICIPANTS: Two doctor/patient pairs. Patients were selected by the treating chiropractors from their existing patients pools. INTERVENTIONS: SMT to the cervical spine (toggle method) on three separate occasions over a 2-wk period. The clinical relevancy of the treatment was assessed via before and after measures of tissue compliance. MAIN OUTCOME MEASURE: a) Forces during manipulation: preload and peak forces. b) Duration of applied forces. RESULTS: a) Mean peak force = 117.7 N (+/- 15.6 N). b) Mean duration of force = 101.7 msec (+/- 14.7 msec). CONCLUSION: The forces obtained with direct sampling methods compare favorably to previous measurements obtained from indirect sampling techniques, yet the force duration times are smaller (faster) using the direct method.

Biomechanical Phenomena↗
PubMedDate not supplied

High-velocity low-amplitude spinal manipulation for symptomatic lumbar disk disease: a systematic review of the literature.

OBJECTIVE: The aim of the study was to review the evidence for high-velocity low-amplitude spinal manipulation (HVLASM) for symptomatic lumbar disk disease (SLDD). METHODS: A systematic review of the literature was performed. The Cochrane Central Register of Controlled Trials, Medline, Cumulative Index to Nursing and Allied Health Literature, and Mantis were searched. Evidence-based operational definitions of SLDD, HVLASM, and outcomes measures were established. Articles were assessed using these inclusion criteria: (1) published in English, (2) measured at least one outcome in subjects with SLDD undergoing HVLASM, (3) descriptions were sufficiently clear to meet all 3 categories of our operational definitions. Articles that met the inclusion criteria were assessed by 2 independent reviewers and assigned quality ratings based on previously published guidelines. RESULTS: Sixteen studies met the inclusion criteria, representing 203 total subjects. Of these, 172 subjects received HVLASM as active treatment, and 31 received other treatments as comparison subjects. Improvements in patient-based and physiological outcomes were reported among subjects receiving HVLASM; however, no conclusions regarding safety and effectiveness could be drawn from this review because the overall body of evidence uncovered was lacking in quality and quantity. CONCLUSION: HVLASM for SLDD has been reasonably described in the literature; however, the evidence is limited, and definitive conclusions on safety and effectiveness cannot be made at this time. The reviewed evidence supports the hypothesis that HVLASM may be effective in the treatment of SLDD and does not support the hypothesis that HVLASM is inherently unsafe in SLDD cases. It appears that patients with lumbar disk pathology do undergo manipulative treatment in practice. Consequently, this should be an area of research importance. More high-quality clinical trials using valid and reliable diagnostic criteria and outcomes measures are needed.

Humans↗
PubMed1996

The risk of over-reporting spinal manipulative therapy-induced injuries: a description of some cases that failed to burden the statistics.

OBJECTIVE: To describe some cases of severe or fatal symptoms that might be attributed to spinal manipulative therapy and one case that illustrates the importance of witnesses when a patient dies under unusual circumstances. CLINICAL FEATURES: Three of these cases were fatal (two strokes and one heart attack) and one was potentially lethal (a bleeding basilar aneurysm). Another patient developed paresis of one arm and leg (cervical disc prolapse). A case of lower limb paresis and incontinence is also described (cauda equina). INTERVENTION: Because of chance, none of these patients actually received chiropractic treatment. CONCLUSION: The incidence of iatrogenic events that occur after chiropractic treatment is unknown. Such events are generally thought to be under-reported. However, the possibility of over-reporting should also be kept in mind.

Adult↗
PubMed1997

Establishment of total and intraservice work by chiropractic physicians in providing spinal manipulative therapy and evaluation and management services.

OBJECTIVE: To develop and test a self-report survey instrument that measures the work performed by chiropractors in the delivery of evaluation and management (E/M) services and spinal manipulative therapy (SMT). Work is one leg of a triad used to develop Resource-Based Relative Values Scales (RBRVS) for physician reimbursement. DESIGN: Reliability study modeled after a tool designed and tested by economists at Harvard University School of Public Health in the development of relative values scales for physician reimbursement. The survey instrument uses magnitude estimation as a means of obtaining reliable and valid measures of the subjective assessments of the dimensions of a physicians work. SAMPLE: A random national sample was drawn from all members of the American Chiropractic Association. RESULTS: Estimates of the work performed by chiropractors in providing E/M and SMT services were established. The reliability of work ratings indicated that chiropractors agree closely on their ratings for work. The validity of the results indicated a high degree of consistency in rating work, which implies that the results are realistic. A review of demographics suggested that the survey population was representative of the general population of chiropractors. CONCLUSIONS: This study generated valid and reliable estimates of the work performed by chiropractors in providing E/M and SMT services. Work is one of three components used in the development of RBRVS, the method of physician reimbursement that is currently the industry standard. By quantifying the work required in providing services, chiropractors can now develop RBRVS. Additionally, the evidence-based data on work collected here can be used for a comparison with the work of similar services provided by other specialists. This can facilitate the use or modification of service description codes for use by chiropractic physicians.

Chiropractic↗
PubMedDate not supplied

Trunk exercise combined with spinal manipulative or NSAID therapy for chronic low back pain: a randomized, observer-blinded clinical trial.

OBJECTIVES: To study the relative efficacy of three different treatment for chronic low back pain (CLBP). Two preplanned comparisons were made: (a) Spinal manipulative therapy (SMT) combined with trunk strengthening exercises (TSE) vs. SMT combined with trunk stretching exercises, and (b) SMT combined with TSE vs. nonsteroidal anti-inflammatory drug (NSAID) therapy combined with TSE. STUDY DESIGN: Interdisciplinary, prospective, observer-blinded, randomized clinical trial with a 1-yr follow-up period. The trial evaluated therapies in combination only and was not designed to test the individual treatment components. SETTING: Primary contact, college out-patient clinic. PATIENTS: In total, 174 patients aged 20-60 yr were admitted to the study. MAIN OUTCOME MEASURES: Patient-rated low back pain, disability, and functional health status at 5 and 11 wk. INTERVENTIONS: Five weeks of SMT or NSAID therapy in combination with supervised trunk exercise, followed by and additional 6 wk of supervised exercise alone. RESULTS: Individual group comparisons after 5 and 11 wk of intervention on all three main outcome measures did not reveal any clear clinically important or statistically significant differences. There seemed to be a sustained reduction in medication use at the 1-yr follow-up. in the SMT/TSE group. Continuance of exercise during the follow-up year, regardless of type, was associated with a better outcome. CONCLUSION: Each of the three therapeutic regimens was associated with similar and clinically important improvement over time that was considered superior to the expected natural history of long-standing CLBP. For the management of CLBP, trunk exercise in combination with SMT or NSAID therapy seemed to be beneficial and worthwhile. The magnitude of nonspecific therapeutic (placebo) effects, cost-effectiveness and relative risks of side effects associated with these types of therapy need to be addressed in future studies.

Adult↗
PubMed2005

Pathological cervical fracture after spinal manipulation in a pregnant patient.

OBJECTIVE: To present the rare case of a displaced odontoid fracture after manipulative treatment. CLINICAL FEATURES: A 37-year-old, 15-week pregnant patient was referred with acute neck pain and a diffuse paravertebral swelling that started after cervical manipulation performed by her general medical practitioner 5 days before. Because of pregnancy, a cervical spine radiographic series was not obtained before treatment. Magnetic resonance imaging revealed a displaced odontoid fracture associated with a pathological process in the vertebral body of C2 and a paravertebral hematoma on the left side from C2 to C4. INTERVENTION AND OUTCOME: After initial halo vest immobilization, an anterior-posterior fusion of C1-C2 was performed. The histological analysis showed features of an aneurysmal bone cyst. The patient was discharged and had an undisturbed pregnancy and was without any neurological complications. CONCLUSIONS: Because of the weakening lesion in C2, the spinal manipulation most likely caused the displaced odontoid fracture. Special imaging should be performed, preferably with magnetic resonance imaging, when a patient experiences significant new symptoms after cervical manipulation.

Adult↗
PubMed2004

Spinal manipulation, epidural injections, and self-care for sciatica: a pilot study for a randomized clinical trial.

OBJECTIVE: To assess the feasibility of recruiting sciatica patients and to evaluate their compliance in preparation for a full-scale randomized clinical trial. We also aimed to determine the responsiveness of key outcome measures. METHODS: Thirty-two subjects were randomly assigned to spinal manipulation (n=11), epidural steroid injections (n=11), or self-care education (n=10). No between-group comparisons were planned because of the small sample size. RESULTS: At week 12 (the end of the treatment phase), the outcome measures indicating the most improvement/change were the Oswestry disability score (mean, 22.9; SD, 19.9; effect size [ES], 1.8), leg pain severity (mean, 2.9; SD, 1.7; ES, 1.7), and if the symptoms were bothersome (mean, 25.2; SD, 16.0; ES, 1.6). Twenty-four patients were either "very satisfied" or "completely satisfied," and 22 of 32 patients reported 75% or 100% improvement. After 52 weeks, the outcome measure showing the most improvement/change was leg pain severity (mean, 2.3; SD, 2.6; ES, 1.35), followed by the Oswestry disability score (mean, 15.6; SD, 20; ES, 1.2) and if symptoms were bothersome (mean, 18.1; SD, 22.6; ES, 1.1). Eighteen patients were either "very satisfied" or "completely satisfied," and 15 of 32 patients reported 75% or 100% improvement. CONCLUSIONS: The results of this pilot study suggest that it is feasible to recruit subacute and chronic sciatica patients and to obtain their compliance for a full-scale randomized clinical.

Adult↗
PubMedDate not supplied

Chiropractic spinal manipulation for low back pain of pregnancy: a retrospective case series.

Low back pain is a common complaint in pregnancy, with a reported prevalence of 57% to 69% and incidence of 61%. Although such pain can result in significant disability, it has been shown that as few as 32% of women report symptoms to their prenatal provider, and only 25% of providers recommend treatment. Chiropractors sometimes manage low back pain in pregnant women; however, scarce data exist regarding such treatment. This retrospective case series was undertaken to describe the results of a group of pregnant women with low back pain who underwent chiropractic treatment including spinal manipulation. Seventeen cases met all inclusion criteria. The overall group average Numerical Rating Scale pain score decreased from 5.9 (range 2-10) at initial presentation to 1.5 (range 0-5) at termination of care. Sixteen of 17 (94.1%) cases demonstrated clinically important improvement. The average time to initial clinically important pain relief was 4.5 (range 0-13) days after initial presentation, and the average number of visits undergone up to that point was 1.8 (range 1-5). No adverse effects were reported in any of the 17 cases. The results suggest that chiropractic treatment was safe in these cases and support the hypothesis that it may be effective for reducing pain intensity.

Adult↗
PubMed2006

Scoliosis treatment using spinal manipulation and the Pettibon Weighting System: a summary of 3 atypical presentations.

BACKGROUND: Given the relative lack of treatment options for mild to moderate scoliosis, when the Cobb angle measurements fall below the 25-30 degrees range, conservative manual therapies for scoliosis treatment have been increasingly investigated in recent years. In this case series, we present 3 specific cases of scoliosis. CASE PRESENTATION: Patient presentation, examination, intervention and outcomes are detailed for each case. The types of scoliosis presented here are left thoracic, idiopathic scoliosis after Harrington rod instrumentation, and a left thoracic scoliosis secondary to Scheuermann's Kyphosis. Each case carries its own clinical significance, in relation to clinical presentation. The first patient presented for chiropractic treatment with a 35 degrees thoracic dextroscoliosis 18 years following Harrington Rod instrumentation and fusion. The second patient presented with a 22 degrees thoracic levoscoliosis and concomitant Scheuermann's Disease. Finally, the third case summarizes the treatment of a patient with a primary 37 degrees idiopathic thoracic levoscoliosis. Each patient was treated with a novel active rehabilitation program for varying lengths of time, including spinal manipulation and a patented external head and body weighting system. Following a course of treatment, consisting of clinic and home care treatments, post-treatment radiographs and examinations were conducted. Improvement in symptoms and daily function was obtained in all 3 cases. Concerning Cobb angle measurements, there was an apparent reduction in Cobb angle of 13 degrees , 8 degrees , and 16 degrees over a maximum of 12 weeks of treatment. CONCLUSION: Although mild to moderate reductions in Cobb angle measurements were achieved in these cases, these improvements may not be related to the symptomatic and functional improvements. The lack of a control also includes the possibility of a placebo effect. However, this study adds to the growing body of literature investigating methods by which mild to moderate cases of scoliosis can be treated conservatively. Further investigation is necessary to determine whether curve reduction and/or manipulation and/or placebo was responsible for the symptomatic and functional improvements noted in these cases.

Journal Article↗
PubMed1995

Monocular visual loss after closed head trauma: immediate resolution associated with spinal manipulation.

OBJECTIVE: To discuss the case of a patient who demonstrated that spinal injuries may cause both cortical and ocular visual loss that was ameliorated by manipulative care. CLINICAL FEATURES: The patient suffered separate incidents of binocular and monocular loss of vision. A female child, aged 9 yr, presented with bilateral concentric narrowing of the visual fields that returned to normal immediately after spinal treatment. Approximately 1 yr later, she returned with monocular loss of vision after she was struck on the head by a ball. INTERVENTION AND OUTCOME: The child was treated by spinal manipulation under anesthesia; the vision was found to be normal on awakening from the anesthesia. Both visual recoveries were authenticated by an independent ophthalmic specialist. CONCLUSIONS: This case history adds to the other recorded occasions in which vision is noted to improve when the spine is manipulated. Discussion is directed to the basic pathogenesis: is her condition a form of psychoneurosis, is it a variant of migraine, or could it be a combination of both conditions?

Child↗
PubMed1990

The physics of spinal manipulation. Part IV. A theoretical consideration of the physician impact force and energy requirements needed to produce synovial joint cavitation.

The critical force and energy required to facilitate synovial joint cavitation are presented as functions of seven parameters: joint and patient stiffnesses, joint and patient elasticities, the proportion of impacting energy entering the joint and patient, and the critical joint distraction at which cavitation occurs. These parameters are governed by numerous properties of the patient, doctor, joint, and the adjustive process. Equations for the critical force and energy are derived and the seven parameters and their governing factors are discussed.

Biomechanical Phenomena↗