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27 (95% CI, 16.28 to 26.27) per 1,000 person-years and a pooled incidence rate ratio of 1.44 (95% CI, 1.20 to 1.73). The pooled prevalence proportion of anxiety based on seven studies was 19% (95% CI, 11% to 29%) and a meta-analysis of two studies comparing the prevalence of anxiety in patients with PsA to those without PsA yielded a pooled OR of 1.49 (95% CI, 1.39 to 1.59). Only a small proportion of patients, between 2.4% and 13.5%, were reported to be taking antidepressant or antianxiety medications. CONCLUSIONS We identified substantial prevalence of depression and anxiety as well as elevated incidence of depression among patients with PsA. this website These findings should raise awareness of the importance of mental health care in this population. Infant positioning in daily life, particularly in relation to active neck and back muscles, may affect spinal development, psychosocial progression, and motor milestone achievement. Yet the impact of infant body position on muscle activity is unknown. The objective of this study was to evaluate neck and back muscle activity of healthy infants in common positions and baby devices. Healthy full-term infants (n = 22, 2-6 months) participated in this experimental study. Daily sleep and positioning were reported by caregivers. Cervical paraspinal and erector spinae muscle activity was measured using surface electromyography (EMG) in five positions lying prone, lying supine, held in-arms, held in a baby carrier, and buckled into a car seat. Mean filtered EMG signal and time that muscles were active were calculated. Paired t-tests were used to compare positions to the prone condition. Caregivers reported that infants spent 12% of daily awake time prone, 43% in supine-lying baby gear, and 44% held in-arms or upright in a baby carrier. Infants exhibited highest erector spinae activity when prone, and lowest cervical paraspinal muscle activity in the car seat. No differences were found between in-arms carrying and babywearing. This first evaluation of the muscle activity of healthy infants supports the importance of prone time in infants' early spinal development because it promotes neck and back muscle activity. Carrying babies in-arms or in baby carriers may also be beneficial to neck muscle development, while prolonged time spent in car seats or containment devices may be detrimental to spinal development. Patients often have difficulty recovering knee extension strength post total knee arthroplasty (TKA), and that may reflect alteration of the mechanics including geometry and rollback kinematics, so the purpose of this work was to explore this by comparing the knee extension torque (KET) of the native knee, TKA and patellofemoral arthroplasty (PFA) in response to quadriceps tension. Eight fresh-frozen knees were mounted in a knee extension rig with quadriceps loading and tibial extension torque measurement. Each knee was subject to four conditions native knee, PFA, cruciate-retaining (CR) and posterior-stabilized (PS) TKA. The KET was measured from 120° to 0° knee flexion. Data were analyzed using one-way ANOVA and post-hoc paired t-tests. The native KET was lowest in terminal extension and 70-100° flexion, and maximal at 20-30° flexion. PFA produced the greatest KET (p  less then  0.008) compared with native, CR- and PS-TKA, at 30-40° flexion. CR- and PS-TKA had lower KET across 0-50° flexion (p  less then  0.001 across 0-30°), falling to 25% of the native knee KET or the PFA at full extension. PFA had the highest KET in early flexion possibly due to increased trochlear offset and/or preservation of the cruciate mechanism, so PFA may be more beneficial during the functional range of motion. The claimed benefits of PS- over CR-TKA in deep flexion were not detected. Both CR- and PS-TKAs led to lower KET than the native and PFA knee states across 0-50° flexion. This mechanical effect may help to explain clinical findings of knee extension weakness post-TKA. Diaphyseal fractures of the clavicle had until recently the reputation to always heal with abundant callus formation, except if operated, due to a reported high rate of nonunion after plate fixation by older series. The reason would be that the bone has only periosteal vascularization, easily destroyed by periosteal stripping for implant apposition. Bone autograft and external fixation has been reported as the best technique to heal a nonunited clavicle nonunion. Are these classical considerations still valid nowadays? The purposes of this article focusing only on diaphyseal clavicular fractures are to review the vascularization of the bone, the rate of nonunion after nonoperative treatment, the indications and techniques of osteosynthesis, and the treatment possibilities of an established nonunion. This article will not deal with the specific problems of the lateral clavicular fractures, which are equivalent to acromio-clavicular fracture-dislocations, nor of medial fractures, close to the sterno-clavicular joint. Fibulo-scapho-lunate fusion is a technique that allows residual movement in the wrist in case of wide bone resection replacing the distal radius by a vascularised fibular transfer. Some authors have used this technique with favourable results but the distal synthesis seems to not be standardised at all, many different osteosynthesis methods have been proposed. This paper reports a complete review of the present day literature about this subject and, evaluating the different proposed osteosynthesis techniques referred in literature, suggests a standardization of the synthesis methods with dorsal plating. We report some technical considerations and results of three cases operated with a stable dorsal osteosynthesis (twice with a double plate and once with a long plate). We evaluate the time of healing and the clinical result. INTRODUCTION The appearance of a symptomatic neuroma following finger amputation is a devastating consequence for patient's quality of life. It could be cause of chronic neuropathic pain. The prevention of neuroma formation is a challenging effort for hand surgeons. The biological mechanisms leading to neuroma formation are mostly unknown and different preventing procedures have been tried without certain results. In this paper, a panel of Italian hand surgeons have been asked to express appropriateness about potentially preventive techniques of neuroma formation following the RAND/UCLA appropriateness protocol. METHODS A literature review was preliminarily performed identifying the most employed methods to reduce the pathologic nerve scar. Afterwards, the selected panelists were asked to score the appropriateness of each procedure in a double scenario in case of a sharp amputation or in a tear injury. The appropriateness was evaluated according to RAND/UCLA protocol. RESULTS Nine Italian hand surgeons were included in the panel.