New Markers of Bone Fragility in Hemodialysis Patients: A Monocentric Study.

INTRODUCTION: Mechanisms underlying bone fragility in patients under dialysis are various. The assessment of bone disorder is not yet codified in these patients. Our study aimed to determine the relationship between the serum fibroblast growth factor 23 (FGF23) level and bone fragility. We also aimed to assess the bone alkaline phosphatase (bAP) to the C-terminal telopeptide of type I (CTX) ratio and the FGF23*bAP product to CTX ratio in patients under hemodialysis. METHODOLOGY: We conducted a cross-sectional study, including 76 patients under hemodialysis. To assess bone fragility, we measured bAP, CTX, and FGF 23. We calculated the bAP to the CTX ratio (bAP/CTX) and the FGF23*bAP product to the CTX ratio (FGF23*bAP/CTX). We defined bone fragility as the existence of osteoporosis or fragility fractures. Receiver operating characteristic (ROC) curves were evaluated for each biological using the existence of osteoporosis or fragility fracture as the gold standard for bone fragility. RESULTS: There were 51 men. The mean age was 53.36 ± 14.27 years. Bone fragility was noted in 25 cases. Patients with osteoporosis had higher FGF*bAP/CTX and bAP/CTX ratios. The ability of the ratio (bAP/CTX) to distinguish patients with osteoporosis from those without osteoporosis was good, with a ROC AUC of 0.707. The optimal ratio cut-off value with the highest accuracy was 9.72. The ability of the ratio (FGF23*bAP/CTX) to distinguish patients with bone fragility was good, with a ROC AUC of 0.701. The optimal ratio cut-off value with the highest accuracy was 1621.89 (sensitivity 60%, specificity 78.4%). CONCLUSION: Our study showed FGF23, FGF23*bAP product to CTX ratio, and the bAP to CTX ratio can be used as markers of bone fragility in hemodialysis patients. Therefore, these noninvasive and relatively inexpensive methods may serve to diagnose bone fragility in patients under hemodialysis.

Positive Association of Obesity and Insulin Resistance With Bone Mineral Density in Tunisian Postmenopausal Women.

The association of bone mineral density (BMD) with obesity and insulin resistance remains unclear. This study aimed to explore these associations in Tunisian menopausal women. Eighty-one postmenopausal women were recruited. Data were analyzed for obese (N = 57) and non-obese women (N = 24) and for insulin-resistant (N = 43) and non insulin-resistant women (N = 36). Anthropometric and biochemical parameters were recorded. BMD in different sites and body composition were measured using dual-energy X-ray absorptiometry. Higher BMD was observed in obese women than those non-obese in the left femur (p = 0.0067), right femur (p = 0.0108), total hip (p = 0.0077), and the whole body (p = 0.0276). Also BMD was significantly greater in insulin-resistant women than in non-insulin-resistant women when measured in the left femur and total hip. Positive correlations were recorded between BMD and anthropometric parameters, body composition parameters, and glycemia (r = 0.249, p < 0.05). Multiple linear regression analysis shows that only trunk fat (p < 0.05) and lean mass (p < 0.05) were independently and positively related to BMD, and the waist circumference was the only anthropometric parameter independently and negatively associated to BMD. BMD is improved in obese and insulin-resistant women. Also, trunk fat and lean mass are likely to be key positive independent factors for BMD.

sFRP3 and DKK1 Regulate Fibroblast-Like Synoviocytes Markers and Wnt Elements Expression Depending on Cellular Context.

CONTEXT: Fibroblast-like synoviocytes (FLS) from rheumatoid arthritis (RA) display pathogenic behavior. Various members of the Wnt pathway, especially the canonical Wnt/ß-catenin cascade, may contribute to autonomous RA FLS activation. It has been shown that the two Wnt inhibitors: sFRP3 and DKK1 contribute to several critical aspects of joint biology. However, their effects on RA FLS are poorly characterized. The aim of our study was to investigate the effects of sFRP3 and DKK1 on FLS markers, Wnt components, and target oncogenes expression by RA FLS and compare the findings to osteoarthritic (OA) FLS. MATERIALS AND METHODS: RA and OA FLS were treated with sFRP3 and DKK1 for 6 days. Wnt signaling components (Wnt5a, LRP5 and ß-catenin), Wnt target oncogenes (cyclin E1 and WISP1), and FLS markers (fibronectin and MMP3) were analyzed using western blotting and/or qRT-PCR. RESULTS: Our data indicated that sFRP3 down-regulated the key gene ß-catenin in RA FLS. sFRP3 decreased fibronectin, a well-known downstream effectors gene of Wnt/ß-catenin pathway, and LRP5 expression in both RA and OA FLS. In OA FLS, sFRP3 induced increased expression of Wnt5a and MMP3 but did not affect their levels in RA FLS. On the other hand, DKK1 increased fibronectin expression in RA FLS and decreased its expression in OA FLS. CONCLUSION: Our results confirm the involvement of Wnt signaling in FLS transformation and show that two inhibitors of the same cascade can regulate differently the same elements and that a single inhibitor can initiate signaling depending on cellular context. ABBREVIATIONS: FLS: fibroblast-like synoviocytes; RA: rheumatoid arthritis; Wnt: Wingless; Fz: frizzled; LRP: Fz/low-density lipoprotein receptor protein; WISP1: Wnt1 inducible signaling pathway protein 1; sFRP: secreted Fz-related proteins; DKK: Dickkopf; OA: osteoarthritis; DMEM: Dulbecco's modified Eagle's medium; FBS: fetal bovine serum; PBS: phosphate buffered saline; SDS-PAGE: sodium dodecyl sulfate-polyacrylamide gel electrophoresis; ECL: enhanced chemiluminescence detection solution; MMP3: metaloproteinase 3; qRT-PCR: quantitative real-time polymerase chain reaction; S.D: standard deviation; CRD: cysteine-rich domain; MeCP2: methyl-CpG-binding protein; RANKL: nuclear factor-kappa B ligand.

Bone Mineral Density in Sheehan's Syndrome; Prevalence of Low Bone Mass and Associated Factors.

Hypopituitarism is a known cause of bone mineral loss. This study aimed to evaluate the frequency of osteopenia and osteoporosis in patients with Sheehan's syndrome (SS) and to determine the risk factors. This is a retrospective study of 60 cases of SS that have had a bone mineral density (BMD) measurement. Clinical, biological, and therapeutic data were collected. The parameters of osteodensitometry at the femoral neck and the lumbar spine of 60 patients with SS were compared with those of 60 age-, height-, and weight-matched control women. The mean age at BMD measurement was 49.4 ± 9.9 yr (range: 25-76 yr). The mean duration of SS was 19.3 ± 8.5 yr (range: 3-41 yr). All patients had corticotropin deficiency and were treated with hydrocortisone at a mean daily dose of 26.3 ± 4.1 mg. Fifty-seven patients (95%) had thyrotropin deficiency and were treated with thyroxine at a mean daily dose of 124.3 ± 47.4 µg. Thirty-five of the 49 patients, aged less than 50 yr at diagnosis and having gonadotropin deficiency (71.4%), had estrogen-progesterone substitution. Osteopenia was present in 25 patients (41.7%) and osteoporosis in 21 (35.0%). The BMD was significantly lower in the group with SS than in the control group (p < 0.001). The odds ratio of osteopenia-osteoporosis was 3.1 (95% confidence interval: 1.4-6.8) at the femoral neck and 3.7 (95% confidence interval: 1.7-7.8) at the lumbar spine. The lumbar spine was more frequently affected by low bone mineral mass (p < 0.05). The duration of the disease and the daily dose of hydrocortisone were independently and inversely associated with BMD at the femoral neck. The daily dose of thyroxine was independently and inversely associated with BMD at the lumbar spine. Estrogen-progesterone replacement therapy was not associated with BMD. Low bone mineral mass was very common in patients with SS. The lumbar spine was more frequently affected. The duration of the disease and the doses of hydrocortisone and thyroxine were involved in bone mineral loss.

Association of LRP5 genotypes with osteoporosis in Tunisian post-menopausal women.

BACKGROUND: Osteoporosis is a highly heritable trait. Among the genes associated with bone mineral density (BMD), the low-density lipoprotein receptor-related protein 5 gene (LRP5) has been consistently identified in Caucasians. However LRP5 contribution to osteoporosis in populations of other ethnicities remains poorly known. METHODS: To determine whether LRP5 polymorphisms Ala1330Val and Val667Met are associated with BMD in North Africans, these genotypes were analyzed in 566 post-menopausal Tunisian women with mean age of 59.5 ± 7 .7 years, of which 59.1% have low bone mass (T-score<-1 at spine or hip). RESULTS: In post-menopausal Tunisian women, 1330Val was weakly associated with reduced BMD T-score at lumbar spine (p=0.047) but not femur neck. Moreover, the TT/TC genotypes tended to be more frequent in women with osteopenia and osteoporosis than in women with normal BMD (p=0.066). Adjusting for body size and other potential confounders, LRP5 genotypes were no longer significantly associated with aBMD at any site. CONCLUSIONS: The less common Val667Met polymorphism showed no association with osteoporosis. The Ala1330Val polymorphism is weakly associated with lower lumbar spine bone density and osteopenia/osteoporosis in postmenopausal Tunisian women. These observations expand our knowledge about the contribution of LRP5 genetic variation to osteoporosis risk in populations of diverse ethnic origin.

Anomalies of intra-synovial citrullination: is there any interest in the diagnosis of early rheumatoid arthritis?

Autoantibodies to citrullinated proteins (ACPA) are specifically associated with rheumatoid arthritis (RA) and seem to play an important role in its pathogenesis. The specific immunological conflict between ACPA and citrullinated fibrin plays a major role in the self-maintenance of synovial inflammation by forming fibrin deposits in the synovial tissue. These deposits, secondarily citrullinated by a local peptidylarginine deiminase (PADI) enzyme activity, seem to maintain the immunological conflict and the inflammation. Our objective in this work is to study the anomalies of citrullination in a group of patients with early RA, in comparison with a control group of patients suffering from undetermined inflammatory arthritis, osteoarthritis and spondyloarthropathy. For this purpose, we used an enzyme-linked immunosorbent assay (ELISA) to determine the levels of ACPA in serum and synovial fluid. By immunohistochemistry, subtype 4 of PADI was also sought in the synovial biopsies taken from all our patients. We found that the ACPA levels in serum and synovial fluid were significantly higher in patients with RA. The enzyme PADI4 was found only in the group with RA and was statistically correlated with ACPA mean levels in sera and synovial fluid. The expression of PADI4 seems to correlate with intra-synovial deposits of fibrin in RA. However, determination of synovial ACPA levels and detection of intra-synovial PADI4 deposits are of no additional benefit compared with assessment of ACPA levels in serum for the diagnosis of early RA.

[Study of bone mineral density in adolescent handball players: a study of 20 cases]. / Etude de la densité minérale osseuse chez les adoloescentes handballeuses: a propos d'une étude de 20 cas.

BACKGROUND: The physical activity during adolescence seems to correlate with bone mass at the end of the growth period. aim : To determine the effect of handball regularly practiced by teenage girls on the anthropometric parameters and bone mineral density. METHODS: Cross-sectional case-control, made in the rheumatology department of the Rabta hospital, has enrolled adolescent handball players of high level, which were compared to a control group matched by age and sex, but sedentary. We evaluated our two groups for anthropometric parameters and BMD. RESULTS: The lean mass (LM), fat mass (FM), the mean values of BMD at the lumbar spine and femur of our sports were significantly higher than that of sedentary controls. On bone mineral content (BMC), a statistically significant difference was observed between groups of sedentary and athletic teenagers. Positive and significant correlations were found between anthropometric parameters and measurements of BMD, BMC and of bone area. CONCLUSION: The regular practice of handball seems to be an osteogenic factor. It may be advisable in adolescents during the growth period to optimize the bone.

[Bone metabolism, biochemical markers of bone resorption and formation processes and interleukine 6 cytokin level during coeliac disease]. / Anomalies du métabolisme osseux et résultats des marqueurs biochimiques du remodelage osseux et de l'interleukine 6 au cours de la maladie coeliaque.

BACKGROUND: Celiac disease (CD) is characterized by a malabsorption syndrom. The bone anomalies are one of the principal complications of this disease. The osteoporosis frequency is high: 3.4% among patients having with CD versus 0.2% in the general population. AIM: To study the bone mineral density during the CD, to compare it to a control group and to determine the anomalies of biochemical markers of bone turn over and level of interleukin 6 cytokin (IL6) in these patients. METHODS: All patients with CD have a measurement of bone mineral density by dual-energy x-ray absorptiometry (DXA), a biological exam with dosing calcemia, vitamin D, parathormone (PTH), the osteoblastic bone formation markers (serum osteocalcin, ALP phosphates alkaline), bone osteoclastic activity (C Télopeptide: CTX) and of the IL6. RESULTS: 42 patients were included, with a median age of 33.6 years. 52. 8% of the patients had a low level of D vitamine associated to a high level of PTH. An osteoporosis was noted in 21.5% of patients. No case of osteoporosis was detected in the control group. The mean level of the CTX, ostéocalcine and the IL6 was higher among patients having an osteoporosis or ostéopenia compared to patients with normal bone (p = 0,017). The factors associated with an bone loss (osteopenia or osteoporosis) were: an age > 30 years, a weight <50 kg, a level of ALP phosphates alkaline > 90 UI/ml, an hypo albuminemia < 40 g/l and a level of CTX higher than 1.2. CONCLUSION: Our study confirms the impact of the CD on the bone mineral statute. The relative risk to have an osteopenia or an osteoporosis was 5 in our series. The measurement of the osseous mineral density would be indicated among patients having a CD.

Influencing Factors in Tunisian Rheumatoid Arthritis Patients' Quality of Life: Burden and Solutions.

BACKGROUND: Rheumatoid Arthritis (RA) is a disease with a heavy functional, psychological, and socioeconomic impact. The management of Quality of Life (QoL) as a therapeutic objective is a fairly recent notion, especially in Tunisia. We aimed to evaluate QoL in RA patients and to identify its affecting factors. METHODS: This was a cross-sectional study in a Tunisian rheumatology center. To assess QoL, we used the Short Form Health Survey (SF-36) and the Arthritis Impact Measurement Scales Short Form (AIMS2-SF). Health Assessment Questionnaire Disability Index (HAQ), the Hospital Anxiety and Depression Scale (HAD) for psychological disorders, Visual Analog Scale for Pain (VAS Pain), and for fatigue (VAS Fatigue) were also used. Disease activity was assessed by the Disease Activity Score (DAS28 CRP). RESULTS: We enrolled 120 established RA, the mean age of our patients was 56.9 ± 11.4 years, with a predominance of women (83.3%). The mean disease duration was 10.97 ± 7.7 years. According to the HAD scale, 27% of our patients presented anxiety, and 26.7% had depressive disorders. There was significantly impaired QoL in patients with low educational level, dependent financial situation, long disease duration, high disease activity, high pain and fatigue levels, poor therapeutic education, functional disability, and psychological disorders (p < 0.001). A strong negative correlation was detected between inflammatory markers, structural damage, and the scores of QoL. Patients under biologics scored significantly higher in the SF36 mental health domain (p < 0.001). CONCLUSION: QoL is significantly poor in Tunisian RA. These patients should be managed using a multidisciplinary approach involving the patients themselves.

Foot Functional Disability in Rheumatoid Arthritis: The Involvement of Body Mass Index.

INTRODUCTION: Overweight and obesity are common in patients with Rheumatoid Arthritis (RA), with a probable impact on bearing foot joints. AIM: Our study aimed to explore the impact of Body Mass Index (BMI) on foot health parameters in RA patients. METHODS: It was a cross-sectional study. Domains of foot health explored were: foot pain (Numeric Rating Scale), foot-related activity limitations (Foot Function Index (FFI), and WOMAC scale), foot synovitis, foot deformity (Platto Score (PS)), radiological joint damage and footwear problems. RESULTS: Fifty RA were included, 82% were female. The mean age was 45.68 ± 10.3 years. The mean DAS28-CRP was 3.25 ± 0.98. Sixty-six percent were overweight or obese, with a mean BMI of 29 Kg/m2 ± 5.74. The average foot pain intensity while walking was 6 ± 1.75. The mean swollen foot joint was 2.2 ± 1.55. The average foot structural index was 7.8 ± 2.73. The mean FFI Disability score was 32 ± 14.2 and WOMAC score was 33.8 ± 13.98. Half of our patients had footwear problems predominantly because of claw toe (40%). High BMI was significantly correlated with foot pain and foot-related activity limitations. It was also correlated with foot deformities assessed with PS (B=4.78; CI(3.87-5.68); p = 0.02), foot synovitis (OR=4.66, CI(2.61-8.32); p < 0.001) and problems with footwear (OR= 0.32; CI(0.18-0.56); p = 0.05). However, it was significantly associated with less radiological joint damage (CI(-0.7-1.1); p = 0.01) and lower foot sharp score (B = -13.9; CI(-0.34-0.01); P = 0.06). CONCLUSION: Despite our findings of a possible protective effect of obesity on structural damage, obesity is still an important cause of increased pain, functional disability, and impaired QoL in RA patients.

Low Back Pain Among Students of Medical University of Tunis.

OBJECTIVE: Low Back Pain (LBP) is the most common musculoskeletal disorder among working adults. It is one of the most prevalent complaints among students. Medical students are among those who are most exposed to this condition; due to stress, numerous hours of studying, and the sedentary lifestyle. Our study aimed to determine the prevalence and associated factors of LBP among the students of Tunis Faculty of Medicine and to assess its impact on student life. METHODS: This cross-sectional study was carried out on the Tunis Faculty of Medicine students. Data were collected through an online self-administered questionnaire. Sociodemographic, personal, and lifestyle characteristics were collected. LBP was assessed using the Nordic Musculoskeletal Health Questionnaire and Its impact using the Oswestry Disability Index (ODI). RESULTS: One hundred and forty-eight students were included. The mean age was 22.9 ± 2.3 years (19.64-38.21). The sex ratio was 0.29. According to the Nordic questionnaire, the point, annual and lifetime prevalence of LBP were 37.8%, 80.4%, and 90.5%, respectively. The mean ODI score was 10.32 ± 8.48 % (0-32). The ODI score was minimal in 87.3% and moderated in 12.7% of cases. The associated factors with LBP were: young age (p = 0.015), spending more than 4 hours in a sitting position (p = 0.059), second cycle of medical studies (p = 0.006), low screen projection in the amphitheater (p = 0.029) and poor layout of the amphitheatres (p = 0.000). The feeling of depression was significantly higher among LBP students (p = 0.018). In the multivariate analysis, the factors that remained statistically significant were the second cycle of medical studies (OR= 3.41), feeling of depression (OR = 3.7), and the belief in the responsibility for the poor layout of the amphitheaters in the genesis or maintenance of LBP (OR = 7.66). CONCLUSION: LBP in medical students is multifactorial across both personal and college-life domains.

Spinal Tuberculosis: Features and Early Predictive Factors of Poor Outcomes.

Introduction: Tuberculosis is still endemic in Tunisia. Among musculoskeletal involvement, spinal tuberculosis (STB) or «Pott's Disease¼ is the most common and can lead to serious neurological complications. The purpose of our study was to focus on STB features (clinical, biological, and radiological) and to identify factors associated with early unfavorable outcomes. Methods: This was a monocentric retrospective study, over a period of 20 years (2000-2020). Only patients treated appropriately were included. Patients' informations were noted. We defined the favorable outcome criterion as weight gain, apyrexia, improvement of the general state, relief of pain, improvement in the classic inflammatory markers (CRP), and absence of vertebral deformities, neurological impairment, or sepsis. The outcome was considered unfavorable otherwise. Results: Our study involved 52 patients. Their average age was 55.21 years±17.79. The average symptom duration was 8.9 months±6.54. Spinal pain was the most common functional sign (90.4%) often inflammatory. Physical signs were dominated by segmental spinal stiffness (71.2%). Spinal magnetic resonance imaging was performed in 38 patients. The disco-vertebral biopsy puncture confirmed the diagnosis in 15 cases. All patients received anti-tuberculosis treatments with an average duration of 10.02±1.97months. The outcome at one month of follow-up was favorable in 32 cases. Poor prognosis factors were normochromic normocytic anaemia (p=0.018), initial lymphocytosis (p=0.048), and fever (p=0.01). However, vertebral fracture at standard X-ray was predictive of favorable outcome (p=0.001). Conclusion: STB is a frequent condition that needs to be treated rapidly. Poor prognosis factors were identified in this study such as normocytic normochromic anemia, initial lymphocytosis, and fever at baseline.

Focal Segmental Glomerulosclerosis and Hyalinosis in a Patient with Spondyloarthritis: A Rare Renal Involvement Case Report.

Background: During its course, spondyloarthritis (SpA) may be associated with extra-articular manifestations affecting several organs. Renal involvement is one of the most common extra-articular manifestations and is dominated by secondary amyloidosis (AA), immunoglobulin A (IgA) nephropathy, and urolithiasis. Other nephropathies such as Focal segmental glomerulosclerosis and hyalinosis (FSGS) are less common and are limited to few case reports. Case: We report the case of a patient followed for axial SpA, who consulted, after being lost to follow-up for 3 years, for elevated blood pressure and edema of both lower limbs associated with an hydrocele and bilateral pleural effusion. Biological examinations showed hypoproteinemia, hypoalbuminemia, and proteinuria. In this context of nephrotic syndrome, the diagnosis of FSGS was confirmed by renal biopsy. Furthermore, the etiological investigation ruled out the causes of secondary FSGS. Conclusion: Renal involvement is a sign of severity in SpA. Its detection and management should be part of the overall management of SpA.

Ultrasonography Enthesitis and Synovitis Screening in Psoriatic Patients: A Case Control Study.

Background: The clinical screening of enthesitis and synovitis in patients with psoriasis lacks specificity and sensitivity during the preclinical phase. Aims: to assess US subclinical synovitis and enthesitis in psoriatic patients compared with healthy controls. Methods: A cross-sectional study on 40 psoriatic patients and 40 healthy sex- and age-matched controls. US examination of 18 joints was performed along with 22 entheseal sites on the upper and lower limbs. US subscores were established according to the US abnormalities: inflammatory score (tendon thickening, hypoechogenicity, bursitis, Doppler signal), damage score (calcification, enthesophytes, bone erosion) and total score (the sum of inflammatory and damage scores). Results: US synovitis were more frequent in psoriatic patients (0.68%) than in controls (0.29%), but the difference was not significant. Patients with psoriasis had more US enthesitis (92,5%) compared to controls (40%)(p<0.001). The total number of enthesitis was higher in the psoriatic group (20.90%) compared to controls (4,78%)(p<0.001). There were more US abnormalities in the psoriatic group compared to controls for calcaneal tendon enthesis(p<0.001), distal patellar tendon enthesis(p<0.001) and deep flexor tendons of the finger enthesis(p<0.001). Compared to controls, psoriatic patients had a significantly higher inflammatory score (Mean±SD) (2.85±3.34 versus 0.58±1.17), damage score (3±2.57 versus 0.60±1.41), and total score (5.85±5.20 versus 1.18±2.07) (p < 0.001 each). Patients with scalp psoriasis had more US enthesitis (p=0.020). Conclusion: Our results indicate that US enthesitis and synovitis are more frequent in patients with psoriasis. Prospective studies with larger sample size are needed to define the contribution of US in predicting the clinical onset of PsA.

[Usefulness of magnetic resonance imaging in the diagnosis of early rheumatoid arthritis: a prospective study of 20 cases]. / Intérêt de l'Imagerie par Résonance Magnétique dans le diagnostic des formes débutantes de la Polyarthrite Rhumatoïde : Etude prospective à propos de 20 cas.

BACKGROUND: Diagnosing early rheumatoid arthritis is difficult and radiographic signs are often late. MRI detects erosions at an early stage and visualizes synovitis, bone edema and tenosynovitis. AIM: To assess the value of MRI for diagnosis of early forms of rheumatoid arthritis. METHODS: Prospective study involving 20 patients who had non erosive rheumatoid arthritis lasting for less than 2 years. MRI of the hand was performed by sequences coronal and axial T1-weighted, T2 with saturated fat signal (FatSat) FatSat and T1 with gadolinium injection. RESULTS: The median age of patients was 52 years and sex ratio M/F of 0.05. The median disease duration was 9 months. Ten patients had antibodies Anti-Cyclic citrullinated protein positive. The MRI was abnormal in 75% of patients. This review found 36 erosions which 50% were in carpal bones, 55 joints with synovitis mainly localized midcarpal and metacarpophalangeal. Bone edema was found mainly in carpal bones. Tenosynovitis affected most frequently the flexor tendons. Seventy percent of patients without anti-Cyclic citrullinated protein had a pathological MRI. CONCLUSION: MRI has an important role in detecting infraradiological lesions in early RA. This contributes to early diagnosis and initiation effective treatment.

[Carpal tunnel syndrome. A Tunisian series]. / Le syndrome du canal carpien : A propos d'une série hospitalière Tunisienne.

BACKGROUND: Carpal tunnel syndrome (CTS) is the most frequent ductal syndrome. Few epidemiological studies in Tunisia exist. AIM: To describe clinical, biological and electromyographic data of Tunisian patients with CTS METHODS: A retrospective study including 80 patients with CTS, during the period going from 2009 to 2010. RESULTS: A female predominance was observed with an average age of 52 years. Acroparesthesia was the main complaint, followed by night awakenings and muscular weakness. Physical examination showed a positive Tinel (91.2%) and Phalen (82.5%) tests, a decrease of tactile sensitivity (26.2%) and a thenar amyotrophy (10%). The Electromyography was abnormal in 85% cases. The most revealing lesions were demyelinating, sensitivo-motor predominance (66%) abnormalities. on Biology, hyperglycemia (12.5%), hyperuricemia (8.7%) and renal failure (7.5%) were the most observed. Medical treatment was drawn on analgesics and anti-inflammatory for 90% of our patients. Local steroid injections were indicated for 35% of patients, leading to a clinical improvement in 90% of cases. Surgery was made in only 13.8% patients. CONCLUSION: Tunisian patients with CTS were female patients, housewifes with obesity or overweight. No other differences were observed in comparison with the literature.

[Pathophysiology of complex regional pain syndrome (CRPS) type 1]. / Physiopathologie du syndrome douloureux regional complexe de type 1: Quoi de neuf en 2011.

BACKGROUND: If the pathophysiology of complex regional pain syndrome (CRPS) type 1 remains controversial, most authors agree on a combination in varying proportions, a sensitization of peripheral nerves. AIM: To describe the state of advances in the physiopathology of complex regional pain syndrome type 1. METHODS: Bibliographic research and literature review performed by referring to databases (Medline, Science Direct) RESULTS: The physiopathology of complex regional pain syndrome type 1 remains still poorly understood and controversial. Several arguments demonstrated both peripheral (inflammation, abnormal sympathetic ...) and central (neurological and cognitive) mechanisms. CONCLUSION: A better knowledge of the physiopathology of complex pain syndrome type 1 is necessary in order to adapt efficient curative therapy or to a better prevention of this syndrome.