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Background: To identify predictive factors of response to viscosupplementation (VS) in patients with hip osteoarthritis (HOA).Methods: Prospective, multicentre, open-label trial, achieved in daily practice conditions. Patients with HOA were treated with a single intra-articular injection of a cross-linked hyaluronic acid combined with mannitol (HAnox-M-XL), using imaging guidance. WOMAC pain and function scores and patient global assessment (PGA) were assessed at baseline and day 90. Improvement, satisfaction and efficacy were self-assessed at day 90. Hip radiographs at baseline were scored using Kellgren-Lawrence grade and Osteoarthritis Research Society International (OARSI) score. Associations between clinical and radiological features and response to VS (pain improvement > 50% at day 90) were assessed in univariate analysis, and then using logistic regression, adjusted for confounding factors.Results: The intent-to-treat (ITT) population included 97 patients (57 females, mean age 63). Ninety completed the follow-up and 80 had full clinical and radiological data. Response to VS was achieved in 47.8% of patients. In univariate analysis, the only clinical outcome statistically and negatively related to response was PGA at baseline (p = 0.047). Radiologically, response to VS was negatively correlated with joint space narrowing (JSN) score (JSN < 2 vs. JSN ≥ 2, p = 0.01) and was related to the patterns of femoral head migration (p = 0.008). In multivariate analysis, only JSN grade (p = 0.03) remained significantly related to a poor response.Conclusion: This pilot study, which needs further confirmation by larger scale trials, suggests that radiological features might be of importance for the decision of VS in patients with HOA.Trial Registration Number: ID RCB N°2013-A00165-40. Registered 31 January 2013. [ABSTRACT FROM AUTHOR]

Dupuytren contracture or disease of the hand is the retraction of the palmar aponeurosis. Its course is progressive and leads to an irreducible flexion deformity of one or more fingers. Early diagnosis is necessary for the table test, which determines the need for treatment. Needle aponeurotomy should be the first option treatment. This minimally invasive outpatient procedure minimizes sick leave and does not require immobilization or physical therapy. Several studies confirmed the short- and intermediate-term effectiveness of this treatment and the minimal side effects when performed by experienced operators. Multiple procedures for extensive disease (several knots) can be performed in the hospital. Close medical and surgical collaboration is necessary for treatment of severe forms, treatment failures, and multiple recurrences.