Serge Poiraudeau

Capacity of the Clinical Picture to Characterize Low Back Pain Relieved by Facet Joint Anesthesia: Proposed Criteria to Identify Patients With Painful Facet Joints

Study Design. Prospective randomized study to compare the efficacy of facet joint injection with lidocaine and facet joint injection with saline in two groups of patients with low back pain, with and without clinical criteria that were determined in a previous study to implicate the facet joint as the primary source of the pain. Objectives. To assess the efficacy of single facet joint anesthesia versus placebo (saline injections) and to determine clinical criteria that are predictive of significant relief of LBP after injection. Summary of Background Data. There is no syndrome that discriminates between lower back pain caused by facet joint and that caused by other structures. Single or double facet joint anesthesia, and single photon emission computed tomography are expensive and time‐consuming procedures for selecting patients in controlled clinical trials with large populations. Methods. Results of a previous study showed that seven clinical characteristics were more frequent in patients who responded to facet joint anesthesia than in those who did not. In the current study, a group of 43 patients with lower back pain who met at least five criteria were compared with 37 patients who met fewer criteria. Patients randomly received injection of either lidocaine or saline into the lower facet joints. The result was considered positive if more than 75% pain relief was determined by visual analog scale. The patient, the radiologist, and the investigator were blinded. An analysis of variance was used to seek an interaction between clinical group effect and injection effect, and logistic regression analysis to select the best set of variables that would be predictive of minimum pain relief of 75% after the injection. Results. There was a significant interaction between clinical group and injection effect (P= 0.003). In patients with back pain, lidocaine provided greater lower‐back pain relief than saline (P = 0.01). Lidocaine also‐provided greater pain relief in the back pain group than in the the nonpain group (P = 0.02). The presence of five among seven variables (age greater than 65 years and pain that was not exacerbated by coughing, not worsened by hyperextension, not worsened by forward flexion, not worsened when rising from flexion, not worsened by extension‐rotation, and well‐relieved by recumbency), always including the last item, distinquished 92% of patients responding to lidocaine injection and 80% of those not responding in the lidocaine group. Conclusions. A set of five clinical characteristics can be used in randomized studies to select lower back pain that will be well relieved by facet joint anesthesia. These characteristics should not, however, be considered as definite diagnostic criteria of lower back pain originating from facet joints.

General practitioners' fear-avoidance beliefs influence their management of patients with low back pain

Abstract The objectives of this cross‐sectional study conducted in primary care practice in France were to describe general practitioners’ (GPs) fear‐avoidance beliefs about low back pain (LBP), investigate the impact of these beliefs on their following guidelines for bed rest, physical activities, and sick leave, and uncover factors associated with GPs’ fear‐avoidance beliefs. A total of 864 GPs completed a 5‐part self‐administered questionnaire. Parts 1, 2, and 3 concerned demographic, professional data, and personal history of back pain, respectively. Part 4 dealt with GPs’ education about LBP and practice for LBP. Part 5 assessed GPs’ fear‐avoidance beliefs on the Fear‐Avoidance Beliefs Questionnaire (FABQ). GPs’ mean age was 48.2 ± 7.0 years, 80% were male, 88% had been practicing for more than 10 years, and 52% reported a previous personal episode of acute LBP. Forty‐six percent had participated in an educational session on LBP during the last 3 years. Mean scores for the FABQ Phys and Work were 9.6 ± 4.8 and 17.5 ± 6.7, respectively. Sixteen percent of participants had high rating on the FABQ Phys (FABQ Phys score > 14). FABQ Phys score was associated with recommendation of bed rest or rest during sick leave (p < 0.0001) for acute LBP and less advice to maintain maximum bearable physical activities (p < 0.001) for chronic LBP. FABQ Work score was associated with prescribing sick leave during painful periods (p < 0.005) for acute LBP and less advice to maintain maximum bearable physical activities (p < 0.001) for chronic LBP. GPs’ fear‐avoidance beliefs about LBP negatively influence their following guidelines concerning physical and occupational activities for patients with LBP.

Validation of the French version of the fear avoidance belief questionnaire.

Study Design. Observational prospective study. Objective. To assess the reliability, validity, and responsiveness of the French version of the Fear Avoidance Belief Questionnaire. Summary of Background Data. Fear, avoidance attitudes, and belief play pivotal roles in disability perceived by patients with chronic low back pain. The Fear Avoidance Belief Questionnaire is a two-part questionnaire assessing fear, avoidance, and beliefs about professional activity and physical activity. Methods. The Fear Avoidance Belief Questionnaire was translated by use of the forward and backward translation procedure. Test-retest reliability was assessed in 31 patients (Group 1) with the intraclass correlation coefficient and the Bland and Altman method. Construct validity was assessed in two groups of patients (Group 2, n = 147; Group 3, n = 70) with the Spearman rank correlation coefficient and factor analysis. Responsiveness was assessed in Group 3, after they underwent a functional restoration program, by the effect size and the standardized response mean. Results. Test-retest reliability was good, with an intra-class correlation coefficient value of 0.88 and 0.72 for fear, avoidance, and beliefs about professional activity and physical activity, respectively. Use of the Bland and Altman method produced a homogeneous distribution of the differences, with no systematic trend observed. The expected divergent validity was observed in Groups 2 and 3. Factor analysis extracted four factors in Group 2 and the two original factors of the English Fear Avoidance Belief Questionnaire in Group 3. The lowest effect size and standardized response mean values (0.30 and 0.31, respectively) were observed with the fear, avoidance, and beliefs about professional activity. Conclusions. The psychometric properties (test-retest reliability, construct validity, and responsiveness) of the French version of the Fear Avoidance Belief Questionnaire are acceptable, and fear, avoidance, and belief can now be assessed in French-speaking patients with low back pain.

The Scleroderma Patient-centered Intervention Network (SPIN) Cohort: protocol for a cohort multiple randomised controlled trial (cmRCT) design to support trials of psychosocial and rehabilitation interventions in a rare disease context

Introduction Psychosocial and rehabilitation interventions are increasingly used to attenuate disability and improve health-related quality of life (HRQL) in chronic diseases, but are typically not available for patients with rare diseases. Conducting rigorous, adequately powered trials of these interventions for patients with rare diseases is difficult. The Scleroderma Patient-centered Intervention Network (SPIN) is an international collaboration of patient organisations, clinicians and researchers. The aim of SPIN is to develop a research infrastructure to test accessible, low-cost self-guided online interventions to reduce disability and improve HRQL for people living with the rare disease systemic sclerosis (SSc or scleroderma). Once tested, effective interventions will be made accessible through patient organisations partnering with SPIN. Methods and analysis SPIN will employ the cohort multiple randomised controlled trial (cmRCT) design, in which patients consent to participate in a cohort for ongoing data collection. The aim is to recruit 1500–2000 patients from centres across the world within a period of 5 years (2013–2018). Eligible participants are persons ≥18 years of age with a diagnosis of SSc. In addition to baseline medical data, participants will complete patient-reported outcome measures every 3 months. Upon enrolment in the cohort, patients will consent to be contacted in the future to participate in intervention research and to allow their data to be used for comparison purposes for interventions tested with other cohort participants. Once interventions are developed, patients from the cohort will be randomly selected and offered interventions as part of pragmatic RCTs. Outcomes from patients offered interventions will be compared with outcomes from trial-eligible patients who are not offered the interventions. Ethics and dissemination The use of the cmRCT design, the development of self-guided online interventions and partnerships with patient organisations will allow SPIN to develop, rigourously test and effectively disseminate psychosocial and rehabilitation interventions for people with SSc.

Phenotypic characteristics of rabbit intervertebral disc cells. Comparison with cartilage cells from the same animals.

STUDY DESIGN Intervertebral disc cells were extracted from the surrounding matrix, and their metabolic activities and phenotypes were studied. OBJECTIVES To compare the metabolic activities and phenotypes of cell populations extracted from the intervertebral discs of young rabbits with those of articular and growth plate chondrocytes from the same animals. SUMMARY OF BACKGROUND DATA The phenotype of intervertebral disc cells has been poorly studied and still is debated. METHODS The intervertebral discs as well as articular and vertebral growth plate cartilage of rabbits were digested enzymatically. The morphology of freshly isolated cells was examined. Their contents of collagen II and X mRNAs were determined by Northern blot analysis, and their sulfation activity by 35S-sulfate incorporation as chondrocytic markers. Cells were cultured at high density or low density and grown in primary culture. The stability of their phenotype was monitored by evaluating the collagen I and II mRNA ratio. The proteoglycans newly synthesized by the cells also were quantified, and their elution profile analyzed on Sepharose 2B columns. RESULTS The anulus fibrosus cells were morphologically undistinguishable from articular chondrocytes. The nucleus pulposus contained mainly large vacuolated cells and a few smaller cells. All freshly extracted cells expressed different levels of collagen II mRNA. Anulus fibrosus and nucleus pulposus cells contained, respectively, 22% and 8% of collagen II mRNA compared with that found in articular or growth plate chondrocytes from the same animal. Only growth plate chondrocytes expressed collagen X. When anulus fibrosus cells were incubated for 48 hours at high density, they had collagen II mRNA contents similar to those of articular and growth plate chondrocytes, but synthesized five to six times fewer sulfated proteoglycans. When seeded at low density, anulus fibrosus cells divided more slowly than articular chondrocytes and incorporated four times fewer 35S-sulfate into proteoglycans. Their collagen II mRNA content was 2.75-fold lower than that of chondrocytes, and the procollagen alpha 1II/alpha 1I mRNA ratio was 3.1 for anulus fibrosus cells and 7 for chondrocytes. No collagen X mRNA was detected. When incubated for 48 hours at high density, the nucleus pulposus giant cells had four times less collagen II mRNA content than cartilage cells but synthesized the same amounts of sulfated proteoglycans. They did not divide during 21 days in culture and still contained collagen II mRNA but no collagen X mRNA. CONCLUSIONS Findings showed that intervertebral disc cells all express cartilage-specific matrix proteins with quantitative differences, depending on their anatomic situation. It is suggested that anulus fibrosus cells are chondrocytic cells at a different stage of differentiation than articular and growth plate chondrocytes. The phenotype of nucleus pulposus cells still is unclear. They could be chondrocytic or notochordal. A definitive answer to this important question requires differentiating markers of notochordal cells.

Fear-avoidance beliefs about back pain in patients with subacute low back pain

Abstract The fear‐avoidance beliefs of patients with subacute low back pain (LBP) considered at risk for chronic disabling LBP are not well known. The objectives of this cross‐sectional descriptive survey, conducted in secondary care practice, were to assess fear‐avoidance beliefs about back pain in patients with subacute LBP and to seek an association between physician or patient characteristics and level of fear‐avoidance beliefs. A total of 286 rheumatologists completed a self‐administered questionnaire assessing physicians’ demographic, professional data, personal history of back pain, and back pain fear‐avoidance beliefs (on the Fear‐Avoidance Belief Questionnaire [FABQ]) and 443 patients with sLBP completed one on pain, perceived handicap and disability (Quebec Back Pain Disability Scale), anxiety and depression (Hospital Anxiety Depression questionnaire), and back pain beliefs (FABQ). Mean FABQ scores for rheumatologists for physical activities (FABQ Phys) and occupational activities (FABQ Work) were 9.2 ± 4.4 (range 0–21) and 16.7 ± 6.9 (range 2–37), respectively, and patient scores were 16.7 ± 5.2 and 19.3 ± 12.4, respectively. A total of 68% of patients and 10% of physicians had a high rating on the FABQ Phys (>14). Patients’ fear‐avoidance beliefs about physical activity were associated with low level of education (odds ratio [OR] 4.19; 95% confidence interval [CI] 1.83–9.57), patients’ perceived disability (OR 1.05; CI 1.03–1.07), and physicians’ high FABQ Phys score (OR 5.92; CI 1.31–26.32). Here we show that fear‐avoidance beliefs about back pain were high in patients with subacute LBP and their rheumatologists.

Impact of digital ulcers on disability and health-related quality of life in systemic sclerosis.

Objective: To assess the impact of digital ulcers (DUs) on disability and health-related quality of life (HRQoL) in systemic sclerosis (SSc). Methods: Two hundred and thirteen patients with SSc were evaluated at four annual meetings of a patient society between 2004 and 2007 (n = 177) or during hospital stay (n = 36). HRQoL was assessed by the SF-36, global disability by the health assessment questionnaire (HAQ), hand disability by the Cochin Hand Function Scale (CHFS) and global hand and wrist mobility by the Kapandji index. Results: Sixty-seven patients (31.4%) had at least one DU at the time of evaluation. Patients with DUs showed significantly more pitting scars (p<0.001) and calcinosis (p<0.0001) than others. Patients with DU had significantly greater HAQ (mean (SD) 1.218 (0.723) vs 0.930 (0.717), p = 0.008), CHFS (mean (SD) 27.38 (20.68) vs 16.73 (18.19), p<0.0001) and aesthetic prejudice (mean (SD) 6.1 (2.2) vs 3.9 (2.5), p<0.0001) scores than others. Hand and wrist mobility were significantly diminished in patients with DU (mean (SD) Kapandji score 75.3 (22.8) vs 81.7 (19.2), p<0.0001). The presence of a DU did not significantly alter the physical component but influenced the mental component (mean (SD) 43.38 (12.53) vs 39.58 (9.54), p = 0.026) of the SF36. Conclusion: Patients with SSc with DUs have reduced wrist and hand mobility, increased global and hand disabilities and decreased mental component of HRQoL.

Development and validation of a scale for mouth handicap in systemic sclerosis: the Mouth Handicap in Systemic Sclerosis scale

Objective: To develop and assess the reliability and construct validity of a scale assessing disability involving the mouth in systemic sclerosis (SSc). Methods: We generated a 34-item provisional scale from mailed responses of patients (n = 74), expert consensus (n = 10) and literature analysis. A total of 71 other SSc patients were recruited. The test–retest reliability was assessed using the intraclass coefficient correlation and divergent validity using the Spearman correlation coefficient. Factor analysis followed by varimax rotation was performed to assess the factorial structure of the scale. Results: The item reduction process retained 12 items with 5 levels of answers (total score range 0–48). The mean total score of the scale was 20.3 (SD 9.7). The test–retest reliability was 0.96. Divergent validity was confirmed for global disability (Health Assessment Questionnaire (HAQ), r = 0.33), hand function (Cochin Hand Function Scale, r = 0.37), inter-incisor distance (r = −0.34), handicap (McMaster-Toronto Arthritis questionnaire (MACTAR), r = 0.24), depression (Hospital Anxiety and Depression (HAD); HADd, r = 0.26) and anxiety (HADa, r = 0.17). Factor analysis extracted 3 factors with eigenvalues of 4.26, 1.76 and 1.47, explaining 63% of the variance. These 3 factors could be clinically characterised. The first factor (5 items) represents handicap induced by the reduction in mouth opening, the second (5 items) handicap induced by sicca syndrome and the third (2 items) aesthetic concerns. Conclusion: We propose a new scale, the Mouth Handicap in Systemic Sclerosis (MHISS) scale, which has excellent reliability and good construct validity, and assesses specifically disability involving the mouth in patients with SSc.

Immediate Mobilization Compared with Conventional Immobilization for the Impacted Nonoperatively Treated Proximal Humeral Fracture : A Randomized Controlled Trial

BACKGROUND There have been few randomized controlled trials evaluating nonoperative treatment of proximal humeral fractures. To investigate shortening the period of dependence, we assessed the feasibility and efficacy of early mobilization of the shoulder (within three days after the fracture) in comparison with those of conventional three-week immobilization followed by physiotherapy. METHODS We randomly assigned seventy-four patients with an impacted proximal humeral fracture to receive early passive mobilization or conventional treatment. The primary outcome was the overall shoulder functional status (as measured with the Constant score) at three months. The secondary outcomes were the Constant score at six weeks and at six months, the change in pain (on a visual analog scale), and the active and passive range of motion. RESULTS At three months and at six weeks, the early mobilization group had a significantly better Constant score than did the conventional-treatment group (between-group difference, 9.9 [95% confidence interval, 1.9 to 17.8] [p = 0.02] and 10.1 [95% confidence interval, 2.0 to 18.1] [p = 0.02], respectively) and better active mobility in forward elevation (between-group difference, 12.0 [95% confidence interval, 1.7 to 22.4] [p = 0.02] and 28.1 [95% confidence interval, 7.1 to 49.1] [p = 0.01], respectively). At three months, the early mobilization group had significantly reduced pain compared with the conventional-treatment group (between-group difference, 15.7 [95% confidence interval, 0.52 to 30.8] [p = 0.04]). No complications in displacement or nonhealing were noted. CONCLUSIONS Early mobilization for impacted nonoperatively treated proximal humeral fractures is safe and is more effective for quickly restoring the physical capability and performance of the injured arm than is conventional immobilization followed by physiotherapy.

Chondroscopy: A new method for scoring chondropathy

The purpose of this study was to evaluate the performance (simplicity, reproducibility, relevance) of chondroscopy as a method for evaluating cartilage damage. Chondroscopy consisted in endoscopic evaluation of the knee using a 2.7-mm Storz arthroscope under local anesthesia and recorded on videotape. Scoring of chondropathy was based on physicians overall assessment using a 100-mm-length visual analogue scale (VAS) and size and grade of cartilage lesions. Reproducibility was evaluated by variability (coefficient of variation [CV]) in the reading of chondroscopic evaluations of five patients five times by one physician and one time each by four different physicians. The correlations between scoring of chondropathy (VAS) and radiological articular joint space narrowing, demographic data (sex, age, weight), and disease characteristics (localization, etiology, activity) were studied in 84 outpatients fulfilling the American College of Rheumatology criteria for the diagnosis of osteoarthritis of the knee. The grade and size of the lesions were both correlated with the physicians overall assessment (r = 0.713 and r = 0.816, respectively). These two variables accounted for 72% of the variance of the VAS (multiple regression analysis). Intraobserver reproducibility was better than interobserver reproducibility (CV, 9% and 37%, respectively). There was a strong correlation between the scoring of chondropathy (VAS) and radiological joint space narrowing (r = .646, P < .0001). Moreover, in 17 of 33 patients without radiological joint space narrowing, VAS was > 20 mm. At variance, the body mass index was the single clinical variable found to correlate with the scoring of chondropathy (r = .282, P < .001).(ABSTRACT TRUNCATED AT 250 WORDS)