Trials Informing Back Pain Guidelines Underreport Key Sociodemographic Data.

INTRODUCTION: Sociodemographic characteristics are related to low back pain (LBP) outcomes, therefore diverse representation is important when appraising clinical trials. We investigated the reporting of participant sociodemographic variables in trials informing the American College of Physicians (ACP) guidelines for the treatment of LBP. METHODS: Clinical trials supporting recommended interventions in the ACP guidelines were reviewed for reporting of participant sociodemographic data. RESULTS: Of 116 trials, 34 reported participant race and/or ethnicity. Education level, income level, and employment status were reported in 24, 10, and 31 trials, respectively; insurance coverage, marital status, and religion were reported in three, 16, and two trials, respectively. Two trials reported on duration or location of residence. Language comprehension was the most frequent exclusion criterion. CONCLUSIONS: Insufficient sociodemographic data exist in trials informing the ACP guidelines for the treatment of LBP. Investigators of LBP interventions should recruit diverse study participants and report comprehensive sociodemographic data.

A narrative review of social determinants of health education in health professional programs and potential pathways for integration into Doctor of Chiropractic programs.

Objectives: To conduct a narrative review of the literature pertaining to strategies employed by health professional programs to teach social determinants of health (SDOH) and use the results to describe pathways for integrating SDOH education into Doctor of Chiropractic programs (DCPs). Methods: A narrative review of peer-reviewed literature describing SDOH education in health professional programs within the United States was performed. The results were used to inform potential pathways of integrating SDOH education into all aspects of DCPs. Results: Twenty-eight papers demonstrated health professional programs' incorporation of SDOH education and assessment into didactic and experiential learning opportunities. Educational interventions resulted in positive changes in knowledge and attitudes toward SDOH. Conclusion: This review demonstrates existing methods for integrating SDOH in health professional programs. Methods may be adopted and assimilated into an existing DCP. Further research is needed to understand barriers and facilitators to the implementation of SDOH education into DCPs.

Objectifs: Réaliser une analyse narrative de la littérature relative aux stratégies employées par les programmes de professionnels de la santé pour enseigner les déterminants sociaux de la santé (DSS) et utiliser les résultats pour décrire les voies d'intégration de l'enseignement des DSS dans les programmes de doctorat en chiropratique (PDC). Méthodes: Une analyse narrative de la documentation évaluée par les pairs décrivant l'enseignement des déterminants sociaux de la santé dans les programmes de formation des professionnels de la santé aux États-Unis a été réalisée. Les résultats ont été utilisés pour éclairer les voies potentielles d'intégration de l'enseignement des DSS dans tous les aspects des PDC. Résultats: Vingt-huit articles ont fait état de l'intégration, par les programmes de professionnels de la santé, de l'enseignement et de l'évaluation des DSS dans les possibilités d'apprentissage didactique et expérientiel. Les interventions éducatives ont entraîné des changements positifs dans les connaissances et les attitudes à l'égard des DSS. Conclusion: Cette étude présente les méthodes existantes d'intégration des DSS dans les programmes de formation des professionnels de la santé. Ces méthodes peuvent être adoptées et assimilées dans un PDC existant. D'autres recherches sont nécessaires pour comprendre les obstacles et les facilitateurs de la mise en oeuvre de l'enseignement des DSS dans les PDC.

Patient Outcomes from Multidisciplinary Chronic Pain Programs in Safety Net Clinics: A Scoping Review.

Patients within the safety net, defined as gap healthcare services for un- or under-insured persons, disproportionately suffer high impact chronic pain. The purpose of this review was to examine pain-related outcomes from multidisciplinary programs for patients with chronic pain within the safety net. A scoping review was conducted based on the Arksey and O'Malley framework coupled with the Preferred Reporting Items for Systematic reviews and Meta-Analyses-Scoping Review checklist. CINAHL, MEDLINE, PubMed, and Google Scholar were searched for eligible articles published between January 1, 2010, and December 31, 2020. Grey literature was searched by typing relevant keywords into Google. Quantitative and qualitative outcomes were included. Data collected were charted and analyzed. Ten articles were included, with five demonstrating primarily quantitative results, three demonstrating primarily qualitative results, and the remaining two demonstrating primarily mixed results. Of the studies that utilized qualitative measures, themes included reduction in pain symptoms and the positive reception of a group-based pain management approach. Of the studies that employed quantitative measures, most demonstrated improvements in pain-related outcomes post-intervention, although not all statistically significant. Multidisciplinary pain programs may be of benefit to safety net patients with chronic pain. Further data collection is needed to determine the efficacy of these programs.

Identification of Degenerative Cervical Myelopathy in the Chiropractic Office: Case Report and a Review of the Literature.

Degenerative cervical myelopathy (DCM) is a common cause of spinal cord dysfunction, yet it may be challenging to identify as it presents with variable symptoms. A 62-year-old woman presented to a chiropractor with a three-month exacerbation of neck pain, hand/finger numbness, and torso dysesthesia. She had previously seen primary care, physical therapy, rheumatology, and pain management. Previous cervical magnetic resonance imaging showed moderate cervical canal stenosis; however, previous providers had diagnosed her with radiculopathy and possible carpal tunnel syndrome yet had not requested neurosurgical consultation. On examination, the chiropractor identified sensorimotor deficits, hyperreflexia, and bilateral Hoffman reflexes, and referred the patient to a neurosurgeon for suspected DCM. The neurosurgeon performed an anterior cervical discectomy and fusion from C4-7. The patient's symptoms and disability level improved within two months of follow-up. We identified 11 previous cases in which a chiropractor suspected DCM which was then confirmed by a surgeon. Including the current case (i.e., 12 total), patients were older and mostly male; 50% had neck pain, 92% had hyperreflexia. Chiropractors referred each patient to a surgeon; 83% underwent cervical spine surgery. This case highlights the identification of DCM by a chiropractor and referral for neurosurgical evaluation with a positive outcome. Patients with previously undiagnosed DCM may present to chiropractors with varied symptoms and examination findings. DCM may contraindicate spinal manipulation and instead warrant surgery. Accordingly, chiropractors play a key role in the detection and referral of patients with misdiagnosed or overlooked DCM.

Varied presentations of cervical spondylotic myelopathy presenting to a chiropractic clinic: a report of 3 cases.

Cervical spondylotic myelopathy (CSM) is the leading cause of acquired spinal cord dysfunction worldwide and may be expected to increase in prevalence due to an aging global population. Clinical features of CSM are highly variable, and chiropractors frequently manage patients with common signs and symptoms of CSM such as neck pain, extremity weakness, and gait imbalances. Early recognition of signs consistent with myelopathy may mitigate future disability and improve quality of life. Key predictors of patient outcome are the age of initial presentation, baseline CSM severity (as measured by mJOA score), and the presence of gait disturbances. This report describes three cases of CSM presenting to a chiropractic clinic. Each case illustrates a unique manifestation of CSM, including myelopathy, myeloradiculopathy, and distal neuropathic pain (funicular referral). In addition, a review of CSM terminology, epidemiology, pathobiology, clinical features, imaging, and management is provided.

La myélopathie spondylotique cervicale (MSC) est la principale cause d'un dysfonctionnement acquis de la moelle épinière dans le monde et sa prévalence devrait augmenter en raison d'une population mondiale vieillissante. Les caractéristiques cliniques de la MSC varient énormément et les chiropraticiens traitent souvent des patients présentant des signes et des symptômes courants de la MSC comme des douleurs cervicales, une faiblesse des extrémités et une démarche déséquilibrée. Une reconnaissance précoce des signes de la myélopathie peut permettre d'atténuer une incapacité future et d'améliorer la qualité de vie. Les principaux signes avant-coureurs des résultats pour le patient sont l'âge de la première manifestation, la gravité initiale de la MSC (mesurée par l'échelle mJOA) et des troubles dans la démarche. Le présent rapport décrit trois cas de MSC soumis à une clinique de chiropratique. Chacun des cas illustre une manifestation unique de MSC, à savoir la myélopthie, la myéloradiculopathie et la douleur neuropathique distale (funiculaire). De plus, une étude de la terminologie, de l'épidémiologie, de la pathobiologie, des caractéristiques cliniques, de l'imagerie et du traitement de la MSC est fournie.

Integrating a Multidisciplinary Pain Team and Chiropractic Care in a Community Health Center: An Observational Study of Managing Chronic Spinal Pain.

BACKGROUND: Chronic spinal pain is one of the most common diseases in the United States. Underserved patients are most affected, and disproportionately may use opioid medications as they lack access to other therapies. It is therefore important to develop systems to treat spinal pain within the primary medical home. METHODS: We designed a prospective observational pilot study at a community health center to measure the effectiveness of two interventions among an underserved population: a multidisciplinary pain team and chiropractic care. Study outcomes were pain and functional disability measured by the Pain Disability Questionnaire (PDQ), and reduction of opioid dose at baseline and 6-12 months. Multivariate linear regression was used to determine associating factors for change in PDQ scores. RESULTS: Thirty-five individuals completed baseline and follow-up PDQs from August 2018 to May 2020. Overall, the mean baseline PDQ was 92.4 +/- 6.1 and the mean follow-up PDQ was 81.9 +/- 7.7, resulting in a mean improvement of -10.6 (95% CI 1.2 - -22.3, P = .08). Participants in the chiropractic team (mean change -25.0, P = .01) and those completing the study before COVID-19 (mean change = -22.6, P < .01) were found to have significantly greater improvement at follow-up. CONCLUSION: This observational study within a community health center resulted in improvement in spinal pain and disability with chiropractic care versus a multidisciplinary pain team. Offering similar services in primary care may help to address pain and disability, and hopefully limit external referrals, advanced imaging, and opioid prescriptions.

The prevalence of psychosocial related terminology in chiropractic program courses, chiropractic accreditation standards, and chiropractic examining board testing content in the United States.

BACKGROUND: Spine related disorders entail biological (somatic), psychological, and social factors. Though biological factors are often emphasized, psychosocial considerations may not be receiving proper attention in the chiropractic field. Chiropractors treat spine complaints and therefore should be trained in the full spectrum of the biopsychosocial model. This study examines the use of psychosocial related terminology in United States doctor of chiropractic program (DCP) curricula, the Council on Chiropractic Education (CCE) standards, and the National Board of Chiropractic Examiners (NBCE) test plans. METHODS: Nineteen academic course catalogs, CCE curricular standards and meta-competencies, and NBCE test plans were studied. Terms containing "psycho", "soci", "mental", "econom", "cultur", "emotion", "determinant", "public", "communit", "neighbor", "behav", or "cognitive" were identified in each document. Frequency of use, context of use, thematic categorization, and percentage of use compared to overall content were calculated and described. RESULTS: 'Public' is the most commonly used psychosocial related term in DCP curricula. 'Determinant' was used in 1 DCP curriculum. The number of courses with psychosocial related terminology in course titles and course descriptions ranged from 1 to 5 and 3 to 12, respectively. Most terms are found in clinical skills, special populations, and other miscellaneous courses, with fewer terms found in psychology and public health courses. Terminology use in course titles and descriptions compared to overall content ranges from 3.40 to 14.86%. CCE uses terminology 17 times across 5 (out of 8) total meta-competencies. NBCE includes terminology in test plans I and II, but not III or IV. CONCLUSIONS: Despite evidence suggesting the influential role of psychosocial factors in determinants of health and healthcare delivery, these factors are poorly reflected in United States DCP curricula. This underappreciation is further evidenced by the lack of representation of psychosocial terminology in NBCE parts III and IV test plans. The reasons for this are theoretical; lack of clarity or enforcement of CCE meta-competencies may contribute.

The ambiguity of sciatica as a clinical diagnosis: A case series.

Sciatica as a clinical diagnosis is nonspecific. A diagnosis of sciatica is typically used as a synonym for lumbosacral radiculopathy. However, the differential for combined low back and leg pain is broad, and the etiology can be one several different conditions. The lifetime prevalence of sciatica ranges from 12.2% to 43%, and nonsuccessful outcomes of treatment are prevalent. Nurse practitioners and other primary care clinicians often have minimal training in differential diagnosis of the complex causes of lower back and leg pain, and many lack adequate time per patient encounter to work up these conditions. Differentiating causes of low back and leg pain proves challenging, and inadequate or incomplete diagnoses result in suboptimal outcomes. Chiropractic care availability may lessen demands of primary care with respect to spinal complaints, while simultaneously improving patient outcomes. The authors describe three patients referred from primary care with a clinical diagnosis of sciatica despite differing underlying pathologies. More precise clinical terminology should be used when diagnosing patients with combined low back and leg pain. Nurse practitioners and other clinicians' triage, treat, and determine appropriate referrals for low back and leg pain. Multidisciplinary care including chiropractic may add value in settings where patients with lower back and leg pain are treated.

Knowledge of psychosocial factors associated with low back pain amongst health science students: a scoping review.

Background: Low back pain is a burden worldwide and biological, psychological, and social mechanisms play a role in its development and persistence. Current guidelines support care using the biopsychosocial model. However, biomedical constructs dominate clinician training, and it is unknown the extent to which health science students understand the psychosocial determinates of a patient's low back pain. Therefore, the aim of this scoping review is to report health science students' current knowledge of psychosocial factors associated with low back pain. Methods: A scoping review framework was used to search electronic databases for research examining health science students' knowledge of psychosocial factors associated with low back pain. The nature and findings of the studies are highlighted using the data charting tool. Each study was analyzed to determine the type of outcome measurement used. Scores were compared to minimum accepted scores, between disciplines, as education advanced, and after educational modules. Results: Fourteen studies published between 2004 and 2019 were identified. Seven healthcare disciplines were represented.In total, 12 different measurement tools were utilized. In 9 studies students demonstrated inadequate knowledge of psychosocial factors associated with low back pain. Three tools compared disciplines and nationalities. Three tools were associated with practice behavior. Eight studies showed improvement as students' education advanced, and 3 studies demonstrated improvements in knowledge after implementation of pain education modules of varied lengths. Of those, two showed significant improvement. Conclusions: Health science students in these studies had substandard understanding of psychosocial factors associated with low back pain. Dedicated pain education has the potential to improve low back pain understanding, resulting in more guideline appropriate care recommendation.

Correction to: Knowledge of psychosocial factors associated with low back pain amongst health science students: a scoping review.

[This corrects the article DOI: 10.1186/s12998-019-0284-5.].

Spinal epidural hematoma in a patient on chronic anticoagulation therapy performing self-neck manipulation: a case report.

Background: Spinal epidural hematoma is a rare condition usually secondary to trauma and coagulopathy. To the best of our knowledge, we present the first case of a patient with an iatrogenic hypercoaguable state performing self-neck manipulation, which resulted in a spinal epidural hematoma and subsequent quadriparesis. Case presentation: A 63-year-old man presented to the emergency department with worsening interscapular pain radiating to his neck 1 day after performing self-manipulation of his cervical spine. He was found to be coagulopathic upon admission, secondary to chronic warfarin therapy for the management of atrial fibrillation. Approximately 48 h after the manipulation, the patient became acutely quadriparetic and hypotensive. Urgent magnetic resonance imaging revealed a multilevel spinal epidural hematoma from the lower cervical to thoracic spine. Conclusions: Partial C7, complete T1 and T2, and partial T3 bilateral laminectomy was performed for evacuation of the spinal epidural hematoma. Following a 2-week course of acute inpatient rehabilitation, the patient returned to his baseline functional status. This case highlights the risks of self-manipulation of the neck and potentially other activities that significantly stretch or apply torque to the cervical spine. It also presents a clinical scenario in which practitioners of spinal manipulation therapy should be aware of patients undergoing anticoagulation therapy.

Differentiating Bilateral Symptomatic Hand Osteoarthritis From Rheumatoid Arthritis Using Sonography When Clinical and Radiographic Features Are Nonspecific: A Case Report.

OBJECTIVE: The purpose of this report is to describe a patient with bilateral symptomatic hand osteoarthritis (OA) originally thought to be rheumatoid arthritis (RA) based on clinical and radiographic features. CLINICAL FEATURES: A 48-year-old woman presented with bilateral hand pain, stiffness, swelling, and redness in the proximal and distal interphalangeal joints of 1 year's duration. Laboratory analysis and plain film radiography were equivocal. These findings necessitated the use of diagnostic ultrasound, which revealed no synovitis or erosions in the joints of the hand, so a diagnosis of bilateral symptomatic hand OA was rendered. INTERVENTION AND OUTCOME: A trial of conservative care consisting of mobilizations, instrument-assisted soft tissue therapy, and laser therapy was given. At 1-month follow-up, the patient regained full pain-free range of motion and strength and returned to complete work activity. CONCLUSION: This case report demonstrated that hand OA can present with nonspecific inflammatory-like clinical features. These findings require further testing, in which case ultrasound imaging may be valuable to differentiate OA from RA. Using ultrasound to make this diagnosis may guide management, with rheumatology referral for RA and conservative care for OA.

Perianal abscess mimicking levator ani syndrome: a case report and approach to the differential diagnosis of anorectal pain.

OBJECTIVE: To present the clinical management and comprehensive differential diagnosis of a patient with anorectal pain from a perianal abscess. CLINICAL FEATURES: A 41-year-old woman presented with pain localized to her perianal and gluteal region, accompanied by internal and external rectal pain. Prior to presentation, the patient had received a working diagnosis of levator ani syndrome. INTERVENTION AND OUTCOME: An interdisciplinary management approach was utilized. Diagnostic imaging confirmed the clinical suspicion of a perianal abscess and the patient underwent surgical drainage. SUMMARY: Anorectal pain is complex and multifactorial and a diagnosis such as an abscess should not be overlooked. This case emphasized that practitioners must be diligent in their evaluation and management of patients with anorectal pain, including recognizing situations that require further imaging and interdisciplinary management.

OBJECTIF: Présenter le traitement clinique et le diagnostic différentiel complet d'une patiente atteinte de douleur ano-rectale découlant d'un abcès périanal. CARACTÉRISTIQUES CLINIQUES: Une femme de 41 ans se présente avec une douleur dans la région périanale et fessière, accompagnée de douleur rectale interne et externe. Avant la présentation, la patiente a reçu un diagnostic de travail de syndrome du muscle élévateur de l'anus. INTERVENTION ET RÉSULTATS: On a utilisé une approche de prise en charge interdisciplinaire. L'imagerie diagnostique a permis de confirmer le soupçon clinique d'abcès périanal et la patiente a subi un drainage chirurgical. RÉSUMÉ: La douleur ano-rectale est complexe et multifactorielle; il ne faut pas négliger un diagnostic tel qu'un abcès. Ce cas souligne que les praticiens doivent faire preuve de diligence lors de leur évaluation et prise en charge des patients qui souffrent de douleur anorectale, y compris reconnaître des situations nécessitant une imagerie et une prise en charge interdisciplinaire supplémentaires.

Distal intersection syndrome progressing to extensor pollicis longus tendon rupture: a case report with sonographic findings.

The purpose of this case report is to describe the value of musculoskeletal ultrasound (US) in diagnosing both distal intersection syndrome (DIS) and rupture of the extensor pollicis longus (EPL) tendon in the same patient. A 38-year-old female presented for evaluation of a painful bump of unknown etiology on the dorsolateral aspect of her non-dominant wrist. US demonstrated tenosynovitis distal to Lister's tubercle of the EPL and extensor carpi radialis tendon sheaths, consistent with DIS. Immobilization therapy was employed, during which time the patient suffered rupture of the EPL tendon. Follow-up US examination confirmed this additional diagnosis. Characteristic US findings of DIS and EPL tendon rupture were observed. Surgical intervention was required and the patient recovered without complication. Although EPL rupture is relatively common in the literature, DIS is rare. This is the first known case of imaging-proven DIS progressing to EPL tendon rupture. This case underscores the value of US as a widely available, cost effective, and dynamic imaging modality for evaluation of wrist complaints.

High-resolution ultrasonography and shear-wave sonoelastography of a cystic radial nerve Schwannoma.

Peripheral nerve tumors are often evaluated with magnetic resonance imaging (MRI), although there are many advantages offered with high-resolution ultrasonography (HRUS). This case report emphasizes the value of HRUS in the diagnosis and management of a patient with a cystic radial nerve Schwannoma. In addition, information on tumor stiffness, obtained with shear-wave sonoelastography (SWE), is presented.

Posterior, Lateral, and Anterior Hip Pain Due to Musculoskeletal Origin: A Narrative Literature Review of History, Physical Examination, and Diagnostic Imaging.

OBJECTIVE: The purpose of this study was to present a narrative review of the literature of musculoskeletal causes of adult hip pain, with special attention to history, physical examination, and diagnostic imaging. METHODS: A narrative review of the English medical literature was performed by using the search terms "hip pain" AND "anterior," "lateral," and "posterior." Additionally, specific entities of hip pain or pain referral sources to the hip were searched for. We used the PubMed search engine through January 15, 2016. RESULTS: Musculoskeletal sources of adult hip pain can be divided into posterior, lateral, and anterior categories. For posterior hip pain, select considerations include lumbar spine and femoroacetabular joint referral, sacroiliac joint pathology, piriformis syndrome, and proximal hamstring tendinopathy. Gluteal tendinopathy and iliotibial band thickening are the most common causes of lateral hip pain. Anterior hip pain is further divided into causes that are intra-articular (ie, labral tear, osteoarthritis, osteonecrosis) and extra-articular (ie, snapping hip and inguinal disruption [athletic pubalgia]). Entrapment neuropathies and myofascial pain should also be considered in each compartment. A limited number of historical features and physical examination tests for evaluation of adult hip pain are supported by the literature and are discussed in this article. Depending on the clinical differential, the gamut of diagnostic imaging modalities recommended for accurate diagnosis include plain film radiography, computed tomography, magnetic resonance imaging, skeletal scintigraphy, and ultrasonography. CONCLUSIONS: The evaluation of adult hip pain is challenging. Clinicians should consider posterior, lateral, and anterior sources of pain while keeping in mind that these may overlap.

Non-Weight-Bearing and Weight-Bearing Ultrasonography of Select Foot Muscles in Young, Asymptomatic Participants: A Descriptive and Reliability Study.

OBJECTIVE: The primary aim of this study was to determine the reliability of diagnostic ultrasound imaging for select intrinsic foot muscles using both non-weight-bearing and weight-bearing postures. Our secondary aim was to describe the change in muscle cross-sectional area (CSA) and dorsoplantar thickness when bearing weight. METHODS: An ultrasound examination was performed with a linear ultrasound transducer operating between 9 and 12 MHz. Long-axis and short-axis ultrasound images of the abductor hallucis, flexor digitorum brevis, and quadratus plantae were obtained in both the non-weight-bearing and weight-bearing postures. Two examiners independently collected ultrasound images to allow for interexaminer and intraexaminer reliability calculation. The change in muscle CSA and dorsoplantar thickness when bearing weight was also studied. RESULTS: There were 26 participants (17 female) with a mean age of 25.5 ± 3.8 years and a mean body mass index of 28.0 ± 7.8 kg/m2. Inter-examiner reliability was excellent when measuring the muscles in short axis (intraclass correlation coefficient >0.75) and fair to good in long axis (intraclass correlation coefficient >0.4). Intraexaminer reliability was excellent for the abductor hallucis and flexor digitorum brevis and ranged from fair to good to excellent for the quadratus plantae. Bearing weight did not reduce interexaminer or intraexaminer reliability. All muscles exhibited a significant increase in CSA when bearing weight. CONCLUSIONS: This is the first report to describe weight-bearing diagnostic ultrasound of the intrinsic foot muscles. Ultrasound imaging is reliable when imaging these muscles bearing weight. Furthermore, muscle CSA increases in the weight-bearing posture.

Sonographic diagnosis of an acute Stener lesion: a case report.

This case report describes the use of diagnostic ultrasound to diagnose a Stener lesion in a patient who presented for conservative care of thumb pain following a fall on an outstretched hand. Conventional radiographic images demonstrated an avulsion fracture at the ulnar aspect of the base of the first proximal phalanx. Diagnostic ultrasound revealed a torn ulnar collateral ligament of the thumb that was displaced proximal to the adductor aponeurosis, consistent with a Stener lesion. Dynamic imaging with ultrasound confirmed displacement of the fully torn ligament. Surgical repair followed the diagnosis. Diagnostic ultrasound in this case provided an accurate diagnosis obviating further imaging. This allowed an optimal outcome due to early intervention.

Dynamic Ultrasonography of the Deep External Rotator Musculature of the Hip: A Descriptive Study.

BACKGROUND: No detailed reports exist describing the methodology of ultrasound image acquisition of the deep external rotator muscles of the hip. Because gluteal pain and sciatica are common, ultrasound may be a useful dynamic imaging adjunct in the evaluation of these patients. OBJECTIVE: To describe dynamic ultrasonography of the deep external rotator muscles of the hip for diagnostic purposes. DESIGN: Descriptive. SETTING: University radiology department. PARTICIPANTS: Participants (n = 25; 14 male) without gluteal pain or sciatica were enrolled (mean age 27.6 ± 4.7 years; mean body mass index 26.0 ± 4.1 kg/m(2)). METHODS: Ultrasonographic cine clips oriented to the long axis of each deep external rotator muscle were captured. In addition, cine clips of the piriformis tendon and obturator internus tendon were obtained. Cine clips were analyzed approximately 1 week after completion of image acquisition independently by 2 blinded raters. MAIN OUTCOME MEASURES: A 5-point Likert scale to evaluate the diagnostic utility of the ultrasound image. RESULTS: The modal Likert scores for rater 1 were as follows: piriformis muscle = 4; piriformis tendon = 4; superior gemellus muscle = 3; obturator internus muscle = 4; obturator internus tendon = 4; inferior gemellus muscle = 4; quadratus femoris muscle = 4. The modal scores for rater 2 were: piriformis muscle = 4; piriformis tendon = 3; superior gemellus muscle = 4; obturator internus muscle = 3; obturator internus tendon = 4; inferior gemellus muscle = 3; quadratus femoris muscle = 4. CONCLUSION: Dynamic ultrasonography may be useful to image the hip deep external rotator musculature for diagnostic purposes and therefore aid in the evaluation of gluteal pain and sciatica. Future work should investigate the reliability and validity of ultrasonography in the evaluation of pathology of these muscles.

Reference Values for the Scalene Interval Width During Varying Degrees of Glenohumeral Abduction Using Ultrasonography.

OBJECTIVE: The aim of this study was to establish reference values for the width of the interval between the anterior and middle scalene muscles using ultrasonography during varying degrees of glenohumeral joint (GH) abduction. Reliability and body mass index (BMI) data were also assessed. METHODS: Interscalene triangles of asymptomatic participants were scanned bilaterally in the transverse plane. Images were obtained at 0°, 90°, and 150° of GH abduction with the participant seated. Width measurements were taken between the anterior and middle scalene muscle borders by bisecting the C6 nerve root as it passed superficial to the posterior tubercle of the C7 transverse process. Intra- and interexaminer reliability and BMI correlation were studied. Statistical significance was defined as P ≤ .05. RESULTS: Images of 42 scalene intervals were included from 21 participants (11 female). Mean participant age was 25.3 ± 3.9 years; mean BMI was 25.4 ± 2.7 kg/m2. Scalene interval measurements at 0°, 90°, and 150° of GH abduction were 4.5 ± 0.5 mm, 4.6 ± 0.5 mm, and 4.4 ± 0.7 mm, respectively, without a significant difference (P = .07). Intraexaminer reliability was excellent (0°: intraclass correlation coefficient [ICC] = 0.82; 90°: ICC = 0.89; 150°: ICC = 0.90). Interexaminer reliability was good to excellent (0°: ICC = 0.59; 90°: ICC = 0.85; 150°: ICC = 0.89). Body mass index was positively correlated only at 0° of GH abduction. CONCLUSIONS: This study establishes previously unreported reference ultrasonography values for the width of the scalene interval. Intraexaminer reliability was excellent at all glenohumeral positions, and interexaminer reliability was determined to be good to excellent. Body mass index was positively correlated only at 0° of GH abduction.