Chiropractic Services and Diagnoses for Low Back Pain in 3 U.S. Department of Defense Military Treatment Facilities: A Secondary Analysis of a Pragmatic Clinical Trial

OBJECTIVE

The purpose of this study was to describe the diagnoses and chiropractic services performed by doctors of chiropractic operating within 3 military treatment facilities for patients with low back pain (LBP).

METHODS

This was a descriptive secondary analysis of a pragmatic clinical trial comparing usual medical care (UMC) plus chiropractic care to UMC alone for U.S. active-duty military personnel with LBP. Participants who were allocated to receive UMC plus 6 weeks of chiropractic care and who attended at least 1 chiropractic visit (n = 350; 1547 unique visits) were included in this analysis. International Classification of Diseases and Current Procedural Terminology codes were transcribed from chiropractic treatment paper forms. The number of participants receiving each diagnosis and service and the number of each service on unique visits was tabulated. Low back pain and co-occurring diagnoses were grouped into neuropathic, nociceptive, bone and/or joint, general pain, and nonallopathic lesions categories. Services were categorized as evaluation, active interventions, and passive interventions.

RESULTS

The most reported pain diagnoses were lumbalgia (66.1%) and thoracic pain (6.6%). Most reported neuropathic pain diagnoses were sciatica (4.9%) and lumbosacral neuritis or radiculitis (2.9%). For the nociceptive pain, low back sprain and/or strain (15.8%) and lumbar facet syndrome (9.2%) were most common. Most reported diagnoses in the bone and/or joint category were intervertebral disc degeneration (8.6%) and spondylosis (6.0%). Tobacco use disorder (5.7%) was the most common in the other category. Chiropractic care was compromised of passive interventions (94%), with spinal manipulative therapy being the most common, active interventions (77%), with therapeutic exercise being most common, and a combination of passive and active interventions (72%).

CONCLUSION

For the sample in this study, doctors of chiropractic within 3 military treatment facilities diagnosed, managed, and provided clinical evaluations for a range of LBP conditions. Although spinal manipulation was the most commonly used modality, chiropractic care included a multimodal approach, comprising of both active and passive interventions a majority of the time.

Care Outcomes for Chiropractic Outpatient Veterans (COCOV): a single-arm, pragmatic, pilot trial of multimodal chiropractic care for U.S. veterans with chronic low back pain

Background

Over 25% of veterans seeking care at U.S. Veterans Health Administration facilities have chronic low back pain (LBP), with high rates of mental health comorbidities. The primary objective of this study was to assess the feasibility of participant recruitment, retention, and electronic data collection to prepare for the subsequent randomized trial of multimodal chiropractic care for pain management of veterans with chronic low back pain. The secondary objectives were to estimate effect sizes and variability of the primary outcome and choose secondary outcomes for the full-scale trial.

Methods

This single-arm pilot trial enrolled 40 veterans with chronic LBP at one Veterans Health Administration facility for a 10-week course of pragmatic multimodal chiropractic care. Recruitment was by (1) provider referral, (2) invitational letter from the electronic health record pre-screening, and (3) standard direct recruitment. We administered patient-reported outcome assessments through an email link to REDCap, an electronic data capture platform, at baseline and 5 additional timepoints. Retention was tracked through adherence to the treatment plan and completion rates of outcome assessments. Descriptive statistics were calculated for baseline characteristics and outcome variables.

Results

We screened 91 veterans over 6 months to enroll our goal of 40 participants. Seventy percent were recruited through provider referrals. Mean age (range) was 53 (22–79) years and 23% were female; 95% had mental health comorbidities. The mean number of chiropractic visits was 4.5 (1–7). Participants adhered to their treatment plan, with exception of 3 who attended only their first visit. All participants completed assessments at the in-person baseline visit and 80% at the week 10 final endpoint. We had no issues administering assessments via REDCap. We observed clinically important improvements on the Roland-Morris Disability Questionnaire [mean change (SD): 3.6 (6.1)] and on PROMIS® pain interference [mean change (SD): 3.6 (5.6)], which will be our primary and key secondary outcome, respectively, for the full-scale trial.

Conclusions

We demonstrated the feasibility of participant recruitment, retention, and electronic data collection for conducting a pragmatic clinical trial of chiropractic care in a Veterans Health Administration facility. Using the pilot data and lessons learned, we modified and refined a protocol for a full-scale, multisite, pragmatic, National Institutes of Health-funded randomized trial of multimodal chiropractic care for veterans with chronic LBP that began recruitment in February 2021.

Trial registration

ClinicalTrials.gov NCT03254719

Supplementary Information

The online version contains supplementary material available at 10.1186/s40814-022-01008-0.

Health-related quality of life among United States service members with low back pain receiving usual care plus chiropractic care plus usual care vs usual care alone: Secondary outcomes of a pragmatic clinical trial

Objective

This study examines Patient-Reported Outcome Measurement Information System (PROMIS^®)-29 v1.0 outcomes of chiropractic care in a multi-site, pragmatic clinical trial and compares the PROMIS measures to: 1) worst pain intensity from a numerical pain rating 0–10 scale, 2) 24-item Roland-Morris Disability Questionnaire (RMDQ); and 3) global improvement (modified visual analog scale).

Design

A pragmatic, prospective, multisite, parallel-group comparative effectiveness clinical trial comparing usual medical care (UMC) with UMC plus chiropractic care (UMC+CC).

Setting

Three military treatment facilities

Subjects

750 active-duty military personnel with low back pain

Methods

Linear mixed effects regression models estimated the treatment group differences. Coefficient of repeatability to estimate significant individual change.

Results

We found statistically significant mean group differences favoring UMC+CC for all PROMIS^®-29 scales and the RMDQ score. Area under the curve estimates for global improvement for the PROMIS^®-29 scales and the RMDQ, ranged from 0.79 to 0.83.

Conclusions

Findings from this pre-planned secondary analysis demonstrate that chiropractic care impacts health-related quality of life beyond pain and pain-related disability. Further, comparable findings were found between the 24-item RMDQ and the PROMIS^®-29 v1.0 briefer scales.

Care Outcomes for Chiropractic Outpatient Veterans (COCOV): a qualitative study with veteran stakeholders from a pilot trial of multimodal chiropractic care

BACKGROUND

Low back pain (LBP) is common among military veterans seeking treatment in Department of Veterans Affairs (VA) healthcare facilities. As chiropractic services within VA expand, well-designed pragmatic trials and implementation studies are needed to assess clinical effectiveness and program uptake. This study evaluated veteran stakeholder perceptions of the feasibility and acceptability of care delivery and research processes in a pilot trial of multimodal chiropractic care for chronic LBP.

METHODS

The qualitative study was completed within a mixed-method, single-arm, pragmatic, pilot clinical trial of chiropractic care for LBP conducted in VA chiropractic clinics. Study coordinators completed semi-structured, in person or telephone interviews with veterans near the end of the 10-week trial. Interviews were audiorecorded and transcribed verbatim. Qualitative content analysis using a directed approach explored salient themes related to trial implementation and delivery of chiropractic services.

RESULTS

Of 40 participants, 24 completed interviews (60% response; 67% male gender; mean age 51.7 years). Overall, participants considered the trial protocol and procedures feasible and reported that the chiropractic care and recruitment methods were acceptable. Findings were organized into 4 domains, 10 themes, and 21 subthemes. Chiropractic service delivery domain encompassed 3 themes/8 subthemes: scheduling process (limited clinic hours, scheduling future appointments, attendance barriers); treatment frequency (treatment sufficient for LBP complaint, more/less frequent treatments); and chiropractic clinic considerations (hire more chiropractors, including female chiropractors; chiropractic clinic environment; patient-centered treatment visits). Outcome measures domain comprised 3 themes/4 subthemes: questionnaire burden (low burden vs. time-consuming or repetitive); relevance (items relevant for LBP study); and timing and individualization of measures (questionnaire timing relative to symptoms, personalized approach to outcomes measures). The online data collection domain included 2 themes/4 subthemes: user concerns (little difficulty vs. form challenges, required computer skills); and technology issues (computer/internet access, junk mail). Clinical trial planning domain included 2 themes/5 subthemes: participant recruitment (altruistic service by veterans, awareness of chiropractic availability, financial compensation); and communication methods (preferences, potential barriers).

CONCLUSIONS

This qualitative study highlighted veteran stakeholders' perceptions of VA-based chiropractic services and offered important suggestions for conducting a full-scale, veteran-focused, randomized trial of multimodal chiropractic care for chronic LBP in this clinical setting.

TRIAL REGISTRATION

ClinicalTrials.gov NCT03254719.

Veteran Response to Dosage in Chiropractic Therapy (VERDICT): Study Protocol of a Pragmatic Randomized Trial for Chronic Low Back Pain

BACKGROUND

Low back pain is a leading cause of disability in veterans. Chiropractic care is a well-integrated, nonpharmacological therapy in Veterans Affairs health care facilities, where doctors of chiropractic provide therapeutic interventions focused on the management of low back pain and other musculoskeletal conditions. However, important knowledge gaps remain regarding the effectiveness of chiropractic care in terms of the number and frequency of treatment visits needed for optimal outcomes in veterans with low back pain.

DESIGN

This pragmatic, parallel-group randomized trial at four Veterans Affairs sites will include 766 veterans with chronic low back pain who are randomly allocated to a course of low-dose (one to five visits) or higher-dose (eight to 12 visits) chiropractic care for 10 weeks (Phase 1). After Phase 1, participants within each treatment arm will again be randomly allocated to receive either monthly chiropractic chronic pain management for 10 months or no scheduled chiropractic visits (Phase 2). Assessments will be collected electronically. The Roland Morris Disability Questionnaire will be the primary outcome for Phase 1 at week 10 and Phase 2 at week 52.

SUMMARY

This trial will provide evidence to guide the chiropractic dose in an initial course of care and an extended-care approach for veterans with chronic low back pain. Accurate information on the effectiveness of different dosing regimens of chiropractic care can greatly assist health care facilities, including Veterans Affairs, in modeling the number of doctors of chiropractic that will best meet the needs of patients with chronic low back pain.

Educator's Learning Alignment Instrument (ELAI)

OBJECTIVE

To report the development and initial testing of a questionnaire designed to assess the concept of learning alignment within chiropractic college courses.

METHODS

A 36-item questionnaire, Educator's Learning Alignment Instrument (ELAI), was created to evaluate how learning goals, course activities, and assessments align within a college course. Questionnaire development was informed by learning theories and tested using a 2-phased electronic survey mechanism among a chiropractic college faculty. Phase 1 included completing the ELAI for a currently implemented course. Phase 2 included questions about confidential reports generated from ELAI data.

RESULTS

Thirty-one of 46 (67%) respondents completed an ELAI. Twelve (38%) participated in phase 2. Twenty-one (68%) courses demonstrated consistent learning focus across goals, activities, and assessments. Aggregate data from early, middle, and late chiropractic program courses revealed progressive shifts toward higher-level learning. Eighty-seven percent of courses contained 1 or more individual learning areas with potentially misaligned goals, activities, or assessment. Ninety-seven percent of respondents completed ELAI questions within 20 minutes. Most (87%) phase 2 respondents noted the report accurately reflected the course. Sixty-seven percent of phase 2 respondents agreed that confidential reports provided useful information to inform course design.

CONCLUSION

The ELAI is a nonburdensome instrument that can facilitate faculty reflection on how aligned learning concepts are applied in a course and provide novel data to assess general learning focus within college courses and within programs. Results indicate ELAI questions can be revised to improve clarity. Additional research comparing ELAI responses from experts, peer educators, and students is recommended.

High-velocity, low-amplitude spinal manipulation training of prescribed forces and thrust duration: A pilot study

OBJECTIVE

High-velocity, low-amplitude spinal manipulation (HVLA-SM) may generate different therapeutic effects depending on force and duration characteristics. Variability among clinicians suggests training to target specific thrust duration and force levels is necessary to standardize dosing. This pilot study assessed an HVLA-SM training program using prescribed force and thrust characteristics.

METHODS

Over 4 weeks, chiropractors and students at a chiropractic college delivered thoracic region HVLA-SM to a prone mannequin in six training sessions, each 30 minutes in duration. Force plates embedded in a treatment table were used to measure force over time. Training goals were 350 and 550 Newtons (N) for peak force and ≤150 ms for thrust duration. Verbal and visual feedback was provided after each training thrust. Assessments included 10 consecutive thrusts for each force target without feedback. Mixed-model regression was used to analyze assessments measured before, immediately following, and 1, 4, and 8 weeks after training.

RESULTS

Error from peak force target, expressed as adjusted mean constant error (standard deviation), went from 107 N (127) at baseline, to 0.2 N (41) immediately after training, and 32 N (53) 8 weeks after training for the 350 N target, and 63 N (148), -6 N (58), and 9 N (87) for the 550 N target. Student median values met thrust duration target, but doctors' were >150 ms immediately after training.

CONCLUSION

After participation in an HVLA-SM training program, participants more accurately delivered two prescribed peak forces, but accuracy decreased 1 week afterwards. Future HVLA-SM training research should include follow-up of 1 week or more to assess skill retention.

Current Evidence for Diagnosis of Common Conditions Causing Low Back Pain: Systematic Review and Standardized Terminology Recommendations

OBJECTIVE

The purpose of this systematic review is to evaluate and summarize current evidence for diagnosis of common conditions causing low back pain and to propose standardized terminology use.

METHODS

A systematic review of the scientific literature was conducted from inception through December 2018. Electronic databases searched included PubMed, MEDLINE, CINAHL, Cochrane, and Index to Chiropractic Literature. Methodological quality was assessed with the Scottish Intercollegiate Guidelines Network checklists.

RESULTS

Of the 3995 articles screened, 36 (8 systematic reviews and 28 individual studies) met final eligibility criteria. Diagnostic criteria for identifying likely discogenic, sacroiliac joint, and zygapophyseal (facet) joint pain are supported by clinical studies using injection-confirmed tissue provocation or anesthetic procedures. Diagnostic criteria for myofascial pain, sensitization (central and peripheral), and radicular pain are supported by expert consensus-level evidence. Criteria for radiculopathy and neurogenic claudication are supported by studies using combined expert-level consensus and imaging findings.

CONCLUSION

The absence of high-quality, objective, gold-standard diagnostic methods limits the accuracy of current evidence-based criteria and results in few high-quality studies with a low risk of bias in patient selection and reference standard diagnosis. These limitations suggest practitioners should use evidence-based criteria to inform working diagnoses rather than definitive diagnoses for low back pain. To avoid the unnecessary complexity and confusion created by multiple overlapping and nonspecific terms, adopting International Association for the Study of Pain terminology and definitions is recommended.

Development of an Evidence-Based Practical Diagnostic Checklist and Corresponding Clinical Exam for Low Back Pain

OBJECTIVE

The purpose of this study was to use scientific evidence to develop a practical diagnostic checklist and corresponding clinical exam for patients presenting with low back pain (LBP).

METHODS

An iterative process was conducted to develop a diagnostic checklist and clinical exam for LBP using evidence-based diagnostic criteria. The checklist and exam were informed by a systematic review focused on summarizing current research evidence for office-based clinical evaluation of common conditions causing LBP.

RESULTS

Diagnostic categories contained within the checklist and exam include nociceptive pain, neuropathic pain, and sensitization. Nociceptive pain subcategories include discogenic, myofascial, sacroiliac, and zygapophyseal (facet) joint pain. Neuropathic pain categories include neurogenic claudication, radicular pain, radiculopathy, and peripheral entrapment (piriformis and thoracolumbar syndrome). Sensitization contains 2 subtypes, central and peripheral sensitization. The diagnostic checklist contains individual diagnostic categories containing evidence-based criteria, applicable examination procedures, and checkboxes to record clinical findings. The checklist organizes and displays evidence for or against a working diagnosis. The checklist may help to ensure needed information is obtained from a patient interview and exam in a variety of primary spine care settings (eg, medical, chiropractic).

CONCLUSION

The available evidence informs reasonable working diagnoses for many conditions causing or contributing to LBP. A practical diagnostic process including an exam and checklist is offered to guide clinical evaluation and demonstrate evidence for working diagnoses in clinical settings.

Chiropractic Integrated Care Pathway for Low Back Pain in Veterans: Results of a Delphi Consensus Process

OBJECTIVE

The purpose of this study was to develop an integrated care pathway for doctors of chiropractic, primary care providers, and mental health professionals who manage veterans with low back pain, with or without mental health comorbidity, within Department of Veterans Affairs health care facilities.

METHODS

The research method used was a consensus process. A multidisciplinary investigative team reviewed clinical guidelines and Veterans Affairs pain and mental health initiatives to develop seed statements and care algorithms to guide chiropractic management and collaborative care of veterans with low back pain. A 5-member advisory committee approved initial recommendations. Veterans Affairs-based panelists (n = 58) evaluated the pathway via e-mail using a modified RAND/UCLA methodology. Consensus was defined as agreement by 80% of panelists.

RESULTS

The modified Delphi process was conducted in July to December 2016. Most (93%) seed statements achieved consensus during the first round, with all statements reaching consensus after 2 rounds. The final care pathway addressed the topics of informed consent, clinical evaluation including history and examination, screening for red flags, documentation, diagnostic imaging, patient-reported outcomes, adverse event reporting, chiropractic treatment frequency and duration standards, tailored approaches to chiropractic care in veteran populations, and clinical presentation of common mental health conditions. Care algorithms outlined chiropractic case management and interprofessional collaboration and referrals between doctors of chiropractic and primary care and mental health providers.

CONCLUSION

This study offers an integrative care pathway that includes chiropractic care for veterans with low back pain.

Stakeholder expectations from the integration of chiropractic care into a rehabilitation setting: a qualitative study

Background

Few studies have investigated patient and provider expectations of chiropractic care, particularly in multidisciplinary settings. This qualitative study explored stakeholder expectations of adding a chiropractor to the healthcare team at a rehabilitation specialty hospital.

Methods

The research methodology was an organizational case study with an inpatient facility for persons recovering from complex neurological conditions serving as the setting. Sixty stakeholders, including patients, families, hospital staff, and administrators, were interviewed or participated in focus groups in June 2015. Semi-structured questions guided the interview sessions which were digitally audiorecorded and transcribed. Data were entered into a qualitative software program to conduct content analysis using an iterative approach to identify key themes.

Results

Expectations for the chiropractic program were mostly positive with themes consistently reported across stakeholder groups. The central domain, making progress, encompassed the organizational mission to empower patients to reach hospital discharge and return to life in the community. Higher order goals, characterized as achieving whole person healing, encompassed patients’ quality of life, self-efficacy, and activities of daily living. Stakeholders expected the addition of chiropractic to help patients progress toward these goals by improving pain management and physical functioning. Pain management themes included pain intensity, medication use, and pain-related behaviors, while functional improvement themes included muscle tone, extremity function, and balance and mobility. In addition to these direct effects on clinical outcomes, stakeholders also expected indirect effects of chiropractic care on healthcare integration. This indirect effect was expected to increase patient participation in other providers’ treatments leading to improved care for the patient across the team and facility-level outcomes such as decreased length of stay.

Conclusions

Stakeholders expected the addition of chiropractic care to a rehabilitation specialty hospital to benefit patients through pain management and functional improvements leading to whole person healing. They also expected chiropractic to benefit the healthcare team by facilitating other therapies in pursuit of the hospital mission, that is, moving patients towards discharge. Understanding stakeholder expectations may allow providers to align current expectations with what may be reasonable, in an effort to achieve appropriate clinical outcomes and patient and staff satisfaction.

Be good, communicate, and collaborate: a qualitative analysis of stakeholder perspectives on adding a chiropractor to the multidisciplinary rehabilitation team

Background

While chiropractors are integrating into multidisciplinary settings with increasing frequency, the perceptions of medical providers and patients toward adding chiropractors to existing healthcare teams is not well-understood. This study explored the qualities preferred in a chiropractor by key stakeholders in a neurorehabilitation setting.

Methods

This qualitative analysis was part of a multi-phase, organizational case study designed to evaluate the planned integration of a chiropractor into a multidisciplinary rehabilitation team. The setting was a 62-bed rehabilitation specialty hospital located in the northeastern United States. Participants included patients, families, community members, and professional staff of the administrative, medical, nursing, and therapy departments. Data collection consisted of audiotaped, individual interviews and profession-specific focus groups guided by a semi-structured interview schedule. Transcripts were imported into a qualitative data analysis program for data analysis. An iterative coding process using thematic content analysis categorized key themes and domains.

Results

Sixty participants were interviewed in June 2015, including 48 staff members, 6 patients, 4 family members, and 2 community members. Our analysis generated a conceptual model of The Preferred Chiropractor for Multidisciplinary Rehabilitation Settings composed of 5 domains and 13 themes. The central domain, Patient-Centeredness, or the provision of healthcare that is respectful, responsive, and inclusive of the patient’s values, preferences, and needs, was mentioned in all interviews and linked to all other themes. The Professional Qualities domain highlighted clinical acumen, efficacious treatment, and being a safe practitioner. Interpersonal Qualities encouraged chiropractors to offer patients their comforting patience, familiar connections, and emotional intelligence. Interprofessional Qualities emphasized teamwork, resourcefulness, and openness to feedback as characteristics to enhance the chiropractor’s ability to work within an interdisciplinary setting. Organizational Qualities, including personality fit, institutional compliance, and mission alignment were important attributes for working in a specific healthcare organization.

Conclusions

Our findings provide an expanded view of the qualities that chiropractors might bring to multidisciplinary healthcare settings. Rather than labeling stakeholder perceptions as good, bad or indifferent as in previous studies, these results highlight specific attributes chiropractors might cultivate to enhance the patient outcomes and the experience of healthcare, influence clinical decision-making and interprofessional teamwork, and impact healthcare organizations.

Electronic supplementary material

The online version of this article (10.1186/s12998-018-0200-4) contains supplementary material, which is available to authorized users.

Effect of Usual Medical Care Plus Chiropractic Care vs Usual Medical Care Alone on Pain and Disability Among US Service Members With Low Back Pain: A Comparative Effectiveness Clinical Trial

IMPORTANCE

It is critically important to evaluate the effect of nonpharmacological treatments on low back pain and associated disability.

OBJECTIVE

To determine whether the addition of chiropractic care to usual medical care results in better pain relief and pain-related function when compared with usual medical care alone.

DESIGN, SETTING, AND PARTICIPANTS

A 3-site pragmatic comparative effectiveness clinical trial using adaptive allocation was conducted from September 28, 2012, to February 13, 2016, at 2 large military medical centers in major metropolitan areas and 1 smaller hospital at a military training site. Eligible participants were active-duty US service members aged 18 to 50 years with low back pain from a musculoskeletal source.

INTERVENTIONS

The intervention period was 6 weeks. Usual medical care included self-care, medications, physical therapy, and pain clinic referral. Chiropractic care included spinal manipulative therapy in the low back and adjacent regions and additional therapeutic procedures such as rehabilitative exercise, cryotherapy, superficial heat, and other manual therapies.

MAIN OUTCOMES AND MEASURES

Coprimary outcomes were low back pain intensity (Numerical Rating Scale; scores ranging from 0 [no low back pain] to 10 [worst possible low back pain]) and disability (Roland Morris Disability Questionnaire; scores ranging from 0-24, with higher scores indicating greater disability) at 6 weeks. Secondary outcomes included perceived improvement, satisfaction (Numerical Rating Scale; scores ranging from 0 [not at all satisfied] to 10 [extremely satisfied]), and medication use. The coprimary outcomes were modeled with linear mixed-effects regression over baseline and weeks 2, 4, 6, and 12.

RESULTS

Of the 806 screened patients who were recruited through either clinician referrals or self-referrals, 750 were enrolled (250 at each site). The mean (SD) participant age was 30.9 (8.7) years, 175 participants (23.3%) were female, and 243 participants (32.4%) were nonwhite. Statistically significant site × time × group interactions were found in all models. Adjusted mean differences in scores at week 6 were statistically significant in favor of usual medical care plus chiropractic care compared with usual medical care alone overall for low back pain intensity (mean difference, -1.1; 95% CI, -1.4 to -0.7), disability (mean difference, -2.2; 95% CI, -3.1 to -1.2), and satisfaction (mean difference, 2.5; 95% CI, 2.1 to 2.8) as well as at each site. Adjusted odd ratios at week 6 were also statistically significant in favor of usual medical care plus chiropractic care overall for perceived improvement (odds ratio = 0.18; 95% CI, 0.13-0.25) and self-reported pain medication use (odds ratio = 0.73; 95% CI, 0.54-0.97). No serious related adverse events were reported.

CONCLUSIONS AND RELEVANCE

Chiropractic care, when added to usual medical care, resulted in moderate short-term improvements in low back pain intensity and disability in active-duty military personnel. This trial provides additional support for the inclusion of chiropractic care as a component of multidisciplinary health care for low back pain, as currently recommended in existing guidelines. However, study limitations illustrate that further research is needed to understand longer-term outcomes as well as how patient heterogeneity and intervention variations affect patient responses to chiropractic care.

TRIAL REGISTRATION

ClinicalTrials.gov Identifier: NCT01692275.

Patients receiving chiropractic care in a neurorehabilitation hospital: a descriptive study

Objectives

Individuals rehabilitating from complex neurological injury require a multidisciplinary approach, which typically does not include chiropractic care. This study describes inpatients receiving multidisciplinary rehabilitation including chiropractic care for brain injury, spinal cord injury (SCI), stroke, and other complex neurological conditions.

Design

Chiropractic services were integrated into Crotched Mountain Specialty Hospital (CMSH) through this project. Patient characteristics and chiropractic care data were collected to describe those receiving care and the interventions during the first 15 months when chiropractic services were available.

Setting

CMSH, a 62-bed subacute multidisciplinary rehabilitation, skilled nursing facility located in Greenfield, New Hampshire, USA.

Results

Patient mean (SD) age (n=27) was 42.8 (13) years, ranging from 20 to 64 years. Males (n=18, 67%) and those of white race/ethnicity (n=23, 85%) comprised the majority. Brain injury (n=20) was the most common admitting condition caused by trauma (n=9), hemorrhage (n=7), infarction (n=2), and general anoxia (n=2). Three patients were admitted for cervical SCI, 1 for ankylosing spondylitis, 1 for traumatic polyarthropathy, and 2 for respiratory failure with encephalopathy. Other common comorbid diagnoses potentially complicating the treatment and recovery process included myospasm (n=13), depression (n=11), anxiety (n=10), dysphagia (n=8), substance abuse (n=8), and candidiasis (n=7). Chiropractic procedures employed, by visit (n=641), included manual myofascial therapies (93%), mechanical percussion (83%), manual muscle stretching (75%), and thrust manipulation (65%) to address patients with spinal-related pain (n=15, 54%), joint or regional stiffness (n= 14, 50%), and extremity pain (n=13, 46%). Care often required adapting to participant limitations or conditions. Such adaptations not commonly encountered in outpatient settings where chiropractic care is usually delivered included the need for lift assistance, wheelchair dependence, contractures, impaired speech, quadriplegia/paraplegia, and the presence of feeding tubes and urinary catheters.

Conclusion

Patients suffered significant functional limitations and comorbidity resulting in modifications to the typical delivery of chiropractic care. Chiropractic services focused on relieving musculoskeletal pain and stiffness.

A systematic review of thrust manipulation combined with one conservative intervention for rotator cuff and related non-surgical shoulder conditions

OBJECTIVE

To determine effects of thrust manipulation plus one conservative intervention for non-surgical shoulder pain and disability due to rotator cuff dysfunction.

METHODS

This review followed PRISMA guidelines. The databases searched were PubMed, PEDro, ICL, CINAHL, and AMED. Included were randomized trials with at least one group assigned to receive thrust manipulation and one adjunct conservative therapy. The PEDro scale was used to assess methodological quality and GRADE for analysis.

RESULTS

The search yielded 2088 articles with one meeting eligibility criteria. The trial examined thrust manipulation with exercise compared to sham. Statistically significant improvements in pain and disability were reported within but not between groups. Evidence quality according to the PEDro scale was good; GRADE was moderate.

CONCLUSION

Few trials have been conducted studying thrust manipulation plus another conservative intervention for rotator cuff conditions rendering available evidence of thrust manipulation plus exercise insufficient to determine effects of this combined treatment.

Interdisciplinary Practice Models for Older Adults With Back Pain: A Qualitative Evaluation

Purpose

Older adults seek health care for low back pain from multiple providers who may not coordinate their treatments. This study evaluated the perceived feasibility of a patient-centered practice model for back pain, including facilitators for interprofessional collaboration between family medicine physicians and doctors of chiropractic.

Design and Methods

This qualitative evaluation was a component of a randomized controlled trial of 3 interdisciplinary models for back pain management: usual medical care; concurrent medical and chiropractic care; and collaborative medical and chiropractic care with interprofessional education, clinical record exchange, and team-based case management. Data collection included clinician interviews, chart abstractions, and fieldnotes analyzed with qualitative content analysis. An organizational-level framework for dissemination of health care interventions identified norms/attitudes, organizational structures and processes, resources, networks-linkages, and change agents that supported model implementation.

Results

Clinicians interviewed included 13 family medicine residents and 6 chiropractors. Clinicians were receptive to interprofessional education, noting the experience introduced them to new colleagues and the treatment approaches of the cooperating profession. Clinicians exchanged high volumes of clinical records, but found the logistics cumbersome. Team-based case management enhanced information flow, social support, and interaction between individual patients and the collaborating providers. Older patients were viewed positively as change agents for interprofessional collaboration between these provider groups.

Implications

Family medicine residents and doctors of chiropractic viewed collaborative care as a useful practice model for older adults with back pain. Health care organizations adopting medical and chiropractic collaboration can tailor this general model to their specific setting to support implementation.

Patient-centered professional practice models for managing low back pain in older adults: a pilot randomized controlled trial

BACKGROUND

Low back pain is a debilitating condition for older adults, who may seek healthcare from multiple providers. Few studies have evaluated impacts of different healthcare delivery models on back pain outcomes in this population. The purpose of this study was to compare clinical outcomes of older adults receiving back pain treatment under 3 professional practice models that included primary medical care with or without chiropractic care.

METHODS

We conducted a pilot randomized controlled trial with 131 community-dwelling, ambulatory older adults with subacute or chronic low back pain. Participants were randomly allocated to 12 weeks of individualized primary medical care (Medical Care), concurrent medical and chiropractic care (Dual Care), or medical and chiropractic care with enhanced interprofessional collaboration (Shared Care). Primary outcomes were low back pain intensity rated on the numerical rating scale and back-related disability measured with the Roland-Morris Disability Questionnaire. Secondary outcomes included clinical measures, adverse events, and patient satisfaction. Statistical analyses included mixed-effects regression models and general estimating equations.

RESULTS

At 12 weeks, participants in all three treatment groups reported improvements in mean average low back pain intensity [Shared Care: 1.8; 95% confidence interval (CI) 1.0 to 2.6; Dual Care: 3.0; 95% CI 2.3 to 3.8; Medical Care: 2.3; 95% CI 1.5 to 3.2)] and back-related disability (Shared Care: 2.8; 95% CI 1.6 to 4.0; Dual Care: 2.5; 95% CI 1.3 to 3.7; Medical Care: 1.5; 95% CI 0.2 to 2.8). No statistically significant differences were noted between the three groups on the primary measures. Participants in both models that included chiropractic reported significantly better perceived low back pain improvement, overall health and quality of life, and greater satisfaction with healthcare services than patients who received medical care alone.

CONCLUSIONS

Professional practice models that included primary care and chiropractic care led to modest improvements in low back pain intensity and disability for older adults, with chiropractic-inclusive models resulting in better perceived improvement and patient satisfaction over the primary care model alone.

TRIAL REGISTRATION

Clinicaltrials.gov, NCT01312233 , 4 March 2011.

Interdisciplinary rehabilitation for a patient with incomplete cervical spinal cord injury and multimorbidity: A case report

RATIONALE

This report describes interdisciplinary rehabilitation for a 51-year-old male recovering from incomplete cervical spinal cord injury (SCI) and multiple comorbidities following an automobile accident.

PATIENT CONCERNS

The patient was admitted to a rehabilitation specialty hospital approximately 2 months post SCI and 2 separate surgical fusion procedures (C3-C6).

DIAGNOSES

Clinical presentation at the rehabilitation hospital included moderate to severe motor strength loss in both upper and lower extremities, a percutaneous endoscopic gastronomy tube (PEG), dysphagia, bowel/bladder incontinence, dependence on a mechanical lift and tilting wheelchair due to severe orthostatic hypotension, and pre-existing shoulder pain from bilateral joint degeneration.

INTERVENTIONS

The interdisciplinary team formally coordinated rehabilitative care from multiple disciplines. Internal medicine managed medications, determined PEG removal, monitored co-morbid conditions, and overall progress. Chiropractic care focused on alleviating shoulder and thoracic pain and improving spinal and extremity mobility. Physical therapy addressed upright tolerance, transfer, gait, and strength training. Occupational therapy focused on hand coordination and feeding/dressing activities. Psychology assisted with coping strategies. Nursing ensured medication adherence, nutrient intake, wound prevention, and incontinence management, whereas physiatry addressed abnormal muscle tone.

OUTCOMES

Eleven months post-admission the patient's progress allowed discharge to a long-term care facility. At this time he was without dysphagia or need for a PEG. Orthostatic hypotension and bilateral shoulder pain symptoms were also resolved while bowel/bladder incontinence and upper and lower extremity motor strength loss remained. He was largely independent in transferring from bed to wheelchair and in upper body dressing. Lower body dressing/bathing required maximal assistance. Gait with a 2-wheeled walker was possible up to 150 feet with verbal cues and occasional stabilizing assistance.

LESSONS

Several specialties functioning within an interdisciplinary team fulfilled complementary roles to support rehabilitation for a patient with SCI.

Association of lumbar spine stiffness and flexion-relaxation phenomenon with patient-reported outcomes in adults with chronic low back pain - a single-arm clinical trial investigating the effects of thrust spinal manipulation

Background

Spinal manipulation (SM) is used commonly for treating low back pain (LBP). Spinal stiffness is routinely assessed by clinicians performing SM. Flexion-relaxation ratio (FRR) was shown to distinguish between LBP and healthy populations. The primary objective of this study was to examine the association of these two physiological variables with patient-reported pain intensity and disability in adults with chronic LBP (>12 weeks) receiving SM.

Methods

A single-arm trial provided 12 sessions of side-lying thrust SM in the lumbosacral region over 6 weeks. Inclusion criteria included 21–65 years old, Roland-Morris Disability Questionnaire (RMDQ) score ≥ 6 and numerical pain rating score ≥ 2. Spinal stiffness and FRR were assessed pre-treatment at baseline, after 2 weeks and after 6 weeks of treatment. Lumbar spine global stiffness (GS) were calculated from the force-displacement curves obtained using i) hand palpation, ii) a hand-held device, and iii) an automated indenter device. Lumbar FRR was assessed during trunk flexion-extension using surface electromyography. The primary outcomes were RMDQ and pain intensity measured by visual analog scale (VAS). Mixed-effects regression models were used to analyze the data.

Results

The mean age of the 82 participants was 45 years; 48% were female; and 84% reported LBP >1 year. The mean (standard deviation) baseline pain intensity and RMDQ were 46.1 (18.1) and 9.5 (4.3), respectively. The mean reduction (95% confidence interval) after 6 weeks in pain intensity and RMDQ were 20.1 mm (14.1 to 26.1) and 4.8 (3.7 to 5.8). There was a small change over time in the palpatory GS but not in the hand-held or automated GS, nor in FRR. The addition of each physiologic variable did not affect the model-estimated changes in VAS or RMDQ over time. There was no association seen between physiological variables and LBP intensity. Higher levels of hand-held GS at L3 and automated GS were significantly associated with higher levels of RMDQ (p = 0.02 and 0.03, respectively) and lower levels of flexion and extension FRR were significantly associated with higher levels of RMDQ (p = 0.02 and 0.008, respectively) across the 3 assessment time points.

Conclusions

Improvement in pain and disability observed in study participants with chronic LBP was not associated with the measured GS or FRR.

Trial registration

NCT01670292 on clinicaltrials.gov, August 2, 2012

A graphical clinical decision aid for managing imaging report information

OBJECTIVE

The purpose of this article is to propose a graphical decision aid for managing radiology report information to assist learners in developing clinical decision-making skills through a structured approach.

METHODS

A graphical decision aid informed by learning theories was constructed to manage radiology report information by identifying an overall strategy, specific decision-making steps, and decision goals. A review of radiology reports was performed to demonstrate the rich source of complex information requiring clinical decision making. Radiology report data were descriptively analyzed, and findings were described as definite or indefinite, while recommendations were reported as required or optional.

RESULTS

The graphical decision aid involves 4 stages. The 1st 2 stages interpret report information and consider data obtained during the clinical encounter. The following 2 stages guide decisions by answering questions to ensure patient safety and/or to confirm diagnosis and to address broader case management questions. The mean (SD) age of participants whose imaging reports were reviewed was 73.4 (7.0) years. Of 170 reports, common findings included degenerative disc disease (98%), soft tissue or vascular calcification (94%), bone demineralization (92%), and zygapophyseal joint degeneration (86%). Common indefinite findings were spinal stenosis (15%), compression fracture (12%), bony abnormality (12%), radiodensity (12%), and disc degeneration (10%). One hundred twenty-one recommendations suggested follow-up actions.

CONCLUSIONS

Information within imaging reports requires identification and interpretation to inform complex clinical decisions. The graphical decision aid proposed in this article is designed to facilitate the development of decision-making skills by providing a structured and evidence-based information management process.

A systematic review of thrust manipulation for non-surgical shoulder conditions

Purpose

Although many conservative management options are available for patients with non-surgical shoulder conditions, there is little evidence of their effectiveness. This review investigated one manual therapy approach, thrust manipulation, as a treatment option.

Methods

A systematic search was conducted of the electronic databases from inception to March 2016: PubMed, PEDro, ICL, CINAHL, and AMED. Two independent reviewers conducted the screening process to determine article eligibility. Inclusion criteria were manuscripts published in peer-reviewed journals with human participants of any age. The intervention included was thrust, or high-velocity low-amplitude, manipulative therapy directed to the shoulder and/or the regions of the cervical or thoracic spine. Studies investigating secondary shoulder pain or lacking diagnostic confirmation procedures were excluded. Methodological quality was assessed using the PEDro scale and the Cochrane risk-of-bias tool.

Results

The initial search rendered 5041 articles. After screening titles and abstracts, 36 articles remained for full-text review. Six articles studying subacromial impingement syndrome met inclusion criteria. Four studies were randomized controlled trials (RCTs) and 2 were uncontrolled clinical studies. Five studies included 1 application of a thoracic spine thrust manipulation and 1 applied 8 treatments incorporating a shoulder joint thrust manipulation. Statistically significant improvements in pain scores were reported in all studies. Three of 4 RCTs compared a thrust manipulation to a sham, and statistical significance in pain reduction was found within the groups but not between them. Clinically meaningful changes in pain were inconsistent; 3 studies reported that scores met minimum clinically important difference, 1 reported scores did not, and 2 were unclear. Four studies found statistically significant improvements in disability; however, 2 were RCTs and did not find statistical significance between the active and sham groups.

Conclusions

No clinical trials of thrust manipulation for non-surgical shoulder conditions other than subacromial impingement syndrome were found. There is limited evidence to support or refute thrust manipulation as a solitary treatment for this condition. Studies consistently reported pain reduction, but active treatments were comparable to shams. High-quality studies of thrust manipulation with safety data, longer treatment periods and follow-up outcomes are needed.

Electronic supplementary material

The online version of this article (doi:10.1186/s12998-016-0133-8) contains supplementary material, which is available to authorized users.

Clinical evaluation tools: a survey of doctors of chiropractic and students at one chiropractic college

INTRODUCTION

The reliability and validity of many evaluation tools leading to clinical decision-making for spinal manipulation are varied. We surveyed senior students and DC employees at one chiropractic college regarding 1) which analysis tools should be used and 2) factors that influence their choices.

METHODS

The survey queried which tools should be used on a routine patient encounter. Clinical evaluation tools included palpation, skin temperature analysis, leg length analysis, and radiographs.

RESULTS

Surveys were collected from 58 doctors of chiropractic (DCs) and 74 students. Respondents from both groups reported to most commonly use static palpation, followed by motion palpation and leg length analysis. DC respondents ranked evidence and personal experience high for rationale; student respondents frequently chose patient preference.

CONCLUSION

DC and student respondents reported use of clinical evaluation tools consistently. However, some variations in rationale were noted. It is important for educators to provide a balanced presentation of the strengths and limitations of clinical analysis procedures to support the development of well-justified evidence-based clinical decision-making skills.

Collaborative care for a patient with complex low back pain and long-term tobacco use: a case report

Few examples of interprofessional collaboration by chiropractors and other healthcare professionals are available. This case report describes an older adult with complex low back pain and longstanding tobacco use who received collaborative healthcare while enrolled in a clinical trial. This 65 year-old female retired office worker presented with chronic back pain. Imaging findings included disc extrusion and spinal stenosis. Multiple co-morbidities and the complex nature of this case substantiated the need for multidisciplinary collaboration. A doctor of chiropractic and a doctor of osteopathy provided collaborative care based on patient goal setting and supported by structured interdisciplinary communication, including record sharing and telephone consultations. Chiropractic and medical interventions included spinal manipulation, exercise, tobacco reduction counseling, analgesic use, nicotine replacement, dietary and ergonomic recommendations, and stress reduction strategies. Collaborative care facilitated active involvement of the patient and resulted in decreased radicular symptoms, improvements in activities of daily living, and tobacco use reduction.

What is the pain source? A case report of a patient with low back pain and bilateral hip osteonecrosis

BACKGROUND

Low back pain is a common symptom arising from many possible sources and includes the possibility of the contribution of remote pathology. This report describes a patient with bilateral osteonecrosis of the femoral heads presenting with a primary symptom of low back pain.

CASE PRESENTATION

A 37-year-old male presented for evaluation of dominant pain that existed for approximately 6-12 months and was located in the right low back. Milder pain was also reported in the right hip. Low back and hip pain were both aggravated by weight-bearing activities. An evidence-based diagnostic evaluation revealed little indication for a primary pain source originating from low back structures. Radiographs revealed bilateral osteonecrosis with evidence of left femoral head collapse.

CONCLUSION

Hip osteonecrosis may have contributed to an atypical presentation of low back pain due to aberrant localization of pain and/or combined with altered biomechanical loading of musculoskeletal structures.

Development of an attention-touch control for manual cervical distraction: a pilot randomized clinical trial for patients with neck pain

Background

Manual cervical distraction (MCD) is a traction-based therapy performed with a manual contact over the cervical region producing repeating cycles while patients lie prone. This study evaluated a traction force-based minimal intervention for use as an attention-touch control in clinical trials of MCD for patients with chronic neck pain.

Methods

We conducted a mixed-methods, pilot randomized clinical trial in adults with chronic neck pain. Participants were allocated to three traction force ranges of MCD: low force/minimal intervention (0-20 N), medium force (21-50 N), or high force (51-100 N). Clinicians delivered five treatments over two weeks consisting of three sets of five cycles of MCD at the C5 vertebra and occiput. Traction forces were measured at each treatment. Patient-reported outcomes included a pain visual analogue scale (VAS), Neck Disability Index (NDI), Credibility and Expectancy Questionnaire (CEQ), and adverse effects. A qualitative interview evaluated treatment group allocation perceptions.

Results

We randomized 48 participants, allocating an average of five each month. Forty-five participants completed the trial with three participants lost to follow-up. Most participants were women (65 %) and white (92 %) with a mean (SD) age of 46.8 (12.5) years. Mean traction force values were within the prescribed force ranges for each group at the C5 and occiput levels. Neck pain VAS demonstrated a benefit for high traction force MCD compared to the low force group [adjusted mean difference 15.6; 95 % confidence interval (CI) 1.6 to 29.7]. Participants in the medium traction force group demonstrated improvements in NDI compared to the low force group (adjusted mean difference 3.0; 95 % CI 0.1 to 5.9), as did participants in the high traction force group (adjusted mean difference 2.7; 95 % CI -0.1 to 5.6). CEQ favored the high force group. Most low force participants correctly identified their treatment allocation in the qualitative interview. No serious adverse events were documented.

Conclusions

This pilot study demonstrated the feasibility of a clinical trial protocol and the utility of a traction-based, minimal intervention as an attention-touch control for future efficacy trials of MCD for patients with neck pain.

Trial registration

ClinicalTrials.gov NCT01765751 (Registration Date 30 May 2012)

Inter-examiner reliability of the interpretation of paraspinal thermographic pattern analysis

INTRODUCTION

A few spinal manipulation techniques use paraspinal surface thermography as an examination tool that informs clinical-decision making; however, inter-examiner reliability of this interpretation has not been reported. The purpose of this study was to report inter-examiner reliability for classifying cervical paraspinal thermographic findings.

METHODS

Seventeen doctors of chiropractic self-reporting a minimum of 2 years of experience using thermography classified thermographic scans into categories (full pattern, partial +, partial, partial -, and adaptation). Kappa statistics (k) were calculated to determine inter-examiner reliability.

RESULTS

Overall inter-examiner reliability was fair (k=0.43). There was good agreement for identifying full pattern (k=0.73) and fair agreement for adaptation (k=0.55). Poor agreement was noted in partial categories (k=0.05-0.22).

CONCLUSION

Inter-examiner reliability demonstrated fair to good agreement for identifying comparable (full pattern) and disparate (adaptation) thermographic findings; agreement was poor for those with moderate similarity (partial). Further research is needed to determine whether thermographic findings should be used in clinical decision-making for spinal manipulation.

Clinician proficiency in delivering manual treatment for neck pain within specified force ranges

BACKGROUND CONTEXT

Neck pain is a common musculoskeletal complaint responsive to manual therapies. Doctors of chiropractic commonly use manual cervical distraction, a mobilization procedure, to treat neck pain patients. However, it is unknown if clinicians can consistently apply standardized cervical traction forces, a critical step toward identifying an optimal therapeutic dose.

PURPOSE

To assess clinicians' proficiency in delivering manually applied traction forces within specified ranges to neck pain patients.

STUDY DESIGN

An observational study nested within a randomized clinical trial.

SAMPLE

Two research clinicians provided study interventions to 48 participants with neck pain.

OUTCOME MEASURES

Clinician proficiency in delivering cervical traction forces within three specified ranges (low force, less than 20 N; medium force, 21-50 N; and high force 51-100 N).

METHODS

Participants were randomly allocated to three force-based treatment groups. Participants received five manual cervical distraction treatments over 2 weeks while lying prone on a treatment table instrumented with force sensors. Two clinicians delivered manual traction forces according to treatment groups. Clinicians treated participants first without real-time visual feedback displaying traction force and then with visual feedback. Peak traction force data were extracted and descriptively analyzed.

RESULTS

Clinicians delivered manual cervical distraction treatments within the prescribed traction force ranges 75% of the time without visual feedback and 97% of the time with visual feedback.

CONCLUSIONS

This study demonstrates that doctors of chiropractic can successfully deliver prescribed traction forces while treating neck pain patients, enabling the capability to conduct force-based dose response clinical studies.

Prevalence of radiographic findings in individuals with chronic low back pain screened for a randomized controlled trial: secondary analysis and clinical implications

OBJECTIVE

The purpose of this study is to measure the prevalence of graded disc degeneration, spondylolisthesis, transitional segmentation, and the distribution of sacral slope in patients 21 to 65 years of age with chronic low back pain (CLBP).

METHODS

This retrospective study analyzed 247 digital lumbar radiographic series obtained during a randomized controlled trial of chiropractic patients with CLBP. Chronic low back pain was defined as pain in the low back lasting 12 weeks or longer. Radiographic findings of disc degeneration, spondylolisthesis, and lumbosacral transitional segmentation were graded by 2 authors using established classification criteria. Sacral slope was measured with a digital tool contained within imaging software.

RESULTS

Lumbosacral transitional segments graded I to IV (Castellvi classification) were present in 14% of cases. Lumbar disc degeneration was most prevalent at L3-4 (49%), followed by L4-5 (42%), L2-3 (41%), L5-S1 (37%), and L1-2 (29%). Isthmic spondylolisthesis was present in 5% of cases, with L5 the most common location. Degenerative spondylolisthesis demonstrated a prevalence of 18%, most commonly occurring at L4. The prevalence of degenerative spondylolisthesis was 51% for women aged 50 to 59 years and 24% for men in the same age range.

CONCLUSIONS

Moderate-severe disc degeneration, multilevel disc narrowing, and degenerative spondylolisthesis were common in individuals with CLBP with age more than 40 years. Isthmic spondylolisthesis was not more prevalent than what has been reported in other populations. Transitional segmentation was identified in a minority of participants, with some of these exhibiting accessory joints or fusion. Mean sacral slope in individuals with CLBP was not substantially different from mean slopes reported in other populations.

Training and certification of doctors of chiropractic in delivering manual cervical traction forces: Results of a longitudinal observational study

Objective : Doctors of chiropractic (DCs) use manual cervical distraction to treat patients with neck pain. Previous research demonstrates variability in traction forces generated by different DCs. This article reports on a training protocol and monthly certification process using bioengineering technology to standardize cervical traction force delivery among clinicians. Methods : This longitudinal observational study evaluated a training and certification process for DCs who provided force-based manual cervical distraction during a randomized clinical trial. The DCs completed a 7-week initial training that included instructional lectures, observation, and guided practice by a clinical expert, followed by 3 hours of weekly practice sessions delivering the technique to asymptomatic volunteers who served as simulated patients. An instrument-modified table and computer software provided the DCs with real-time audible and visual feedback on the traction forces they generated and graphical displays of the magnitude of traction forces as a function of time immediately after the delivery of the treatment. The DCs completed monthly certifications on traction force delivery throughout the trial. Descriptive accounts of certification attempts are provided. Results : Two DCs achieved certification in traction force delivery over 10 consecutive months. No certification required more than 3 attempts at C5 and occiput contacts for 3 force ranges (0-20 N, 21-50 N, and 51-100 N). Conclusions : This study demonstrates the feasibility of a training protocol and certification process using bioengineering technology for training DCs to deliver manual cervical distraction within specified traction force ranges over a 10-month period.

Study protocol for patient response to spinal manipulation - a prospective observational clinical trial on physiological and patient-centered outcomes in patients with chronic low back pain

Background

Low back pain (LBP) is a major health issue due to its high prevalence rate and socioeconomic cost. While spinal manipulation (SM) is recommended for LBP treatment by recently published clinical guidelines, the underlying therapeutic mechanisms remain unclear. Spinal stiffness is routinely examined and used in clinical decisions for SM delivery. It has also been explored as a predictor for clinical improvement. Flexion-relaxation phenomenon has been demonstrated to distinguish between LBP and healthy populations. The primary objective of the current study is to collect preliminary estimates of variability and effect size for the associations of these two physiological measures with patient-centered outcomes in chronic LBP patients. Additionally biomechanical characteristics of SM delivery are collected with the intention to explore the potential dose–response relationship between SM and LBP improvement.

Methods/Design

This is a prospective, observational study applying side-lying, high velocity, low amplitude SM as treatment for patients with LBP over a course of 6 weeks. Approximately 80 participants will be enrolled if they present with chronic LBP of 1, 2 or 3 in Quebec Task Force Classification for spinal disorders, a Roland-Morris Disability Questionnaire (RMDQ) score ≥ 6, and persistent LBP ≥ 2 with a maximum ≥ 4 using numerical rating scale. Patient-centered outcomes include LBP using visual analog scale, RMDQ, and PROMIS-29. Lumbar spine stiffness is assessed using palpation, a hand-held instrumented device, and an automated device. Flexion-relaxation is assessed using surface electromyography at the third level of the lumbar spine. Biomechanical characteristics of SM are assessed using a self-reported, itemized description system, as well as advanced kinetic measures that will be applied to estimate forces and moments at the lumbar segment level targeted by SM.

Discussion

Beside alterations in material properties of the passive components of the spine, increased neuromuscular activity may also contribute to a stiffened spine. Examining changes in both spinal stiffness and flexion-relaxation along the course of the treatment provides an opportunity to understand if the therapeutic effect of SM is associated with its action on active and/or passive components of the spine.

Trial registration

NCT01670292 on clinicaltrials.gov.

Effect of spinal manipulation on sensorimotor functions in back pain patients: study protocol for a randomised controlled trial

Background

Low back pain (LBP) is a recognized public health problem, impacting up to 80% of US adults at some point in their lives. Patients with LBP are utilizing integrative health care such as spinal manipulation (SM). SM is the therapeutic application of a load to specific body tissues or structures and can be divided into two broad categories: SM with a high-velocity low-amplitude load, or an impulse "thrust", (HVLA-SM) and SM with a low-velocity variable-amplitude load (LVVA-SM). There is evidence that sensorimotor function in people with LBP is altered. This study evaluates the sensorimotor function in the lumbopelvic region, as measured by postural sway, response to sudden load and repositioning accuracy, following SM to the lumbar and pelvic region when compared to a sham treatment.

Methods/Design

A total of 219 participants with acute, subacute or chronic low back pain are being recruited from the Quad Cities area located in Iowa and Illinois. They are allocated through a minimization algorithm in a 1:1:1 ratio to receive either 13 HVLA-SM treatments over 6 weeks, 13 LVVA-SM treatments over 6 weeks or 2 weeks of a sham treatment followed by 4 weeks of full spine "doctor's choice" SM. Sensorimotor function tests are performed before and immediately after treatment at baseline, week 2 and week 6. Self-report outcome assessments are also collected. The primary aims of this study are to 1) determine immediate pre to post changes in sensorimotor function as measured by postural sway following delivery of a single HVLA-SM or LVVA-SM treatment when compared to a sham treatment and 2) to determine changes from baseline to 2 weeks (4 treatments) of HVLA-SM or LVVA-SM compared to a sham treatment. Secondary aims include changes in response to sudden loads and lumbar repositioning accuracy at these endpoints, estimating sensorimotor function in the SM groups after 6 weeks of treatment, and exploring if changes in sensorimotor function are associated with changes in self-report outcome assessments.

Discussion

This study may provide clues to the sensorimotor mechanisms that explain observed functional deficits associated with LBP, as well as the mechanism of action of SM.

Trial registration

This trial is registered in ClinicalTrials.gov, with the ID number of NCT00830596, registered on January 27, 2009. The first participant was allocated on 30 January 2009 and the final participant was allocated on 17 March 2011.