BackgroundFrozen shoulder is a common yet poorly understood musculoskeletal condition, which for many, is associated with substantial and protracted morbidity. Understanding the pathology associated with this condition may help to improve management. To date this has not been presented in a systematic fashion. As such, the aim of this review was to summarise the pathological changes associated with this primary frozen shoulder.MethodsDatabases: Medline, Embase, CINAHL, AMED, BNI and the Cochrane Library, were searched from inception to 2nd May, 2014. To be included participants must not have undergone any prior intervention. Two reviewers independently conducted the; searches, screening, data extraction and assessment of Risk of Bias using the Cochrane Risk of Bias Assessment Tool for non-Randomised Studies of Interventions (ACROBAT-NRSI). Only English language publications reporting findings in humans were included. The findings were summarised in narrative format.ResultsThirteen observational studies (involving 417 shoulders) were included in the review. Eight studies reported magnetic resonance imaging or arthrography findings and 5 recorded histological findings. When reported mean ages of the participants ranged from 40.0 to 59.8 years. Duration of symptoms ranged from 0 to 30 months. The majority of studies (n = 7) were assessed to be of moderate risk of bias, two studies at high risk and the remaining four were rated as low risk of bias. Study characteristics were poorly reported and there was widespread variety observed between studies in respect of data collection methods and inclusion criteria employed. Pathological changes in the anterior shoulder joint capsule and related structures were commonly reported. Imaging identified pathological changes occurring in the coracohumeral ligament, axillary fold and rotator interval. Obliteration of the subcoracoid fat triangle also appeared to be pathognomonic. Histological studies were inconclusive but suggested that immune, inflammatory and fibrotic changes where associated with primary frozen shoulder.ConclusionsThis systematic review presents a summary of what is currently known about the tissue pathophysiology of primary frozen shoulder. Further studies that use standardised inclusion and exclusion criteria and investigate changes in naïve tissue at different stages of the condition are required.

Introduction: Prone positioning is deployed as a critical treatment for improving oxygenation in patients with Acute Respiratory Distress Syndrome. This regimen is currently highly prevalent in the COVID-19 pandemic. The pandemic has brought about increased concern about how best to safely avoid brachial plexus injuries when caring for unconscious proned patients. Methods: A review of the published literature on brachial plexus injuries secondary to proning ventilated patients was performed. This was combined with a review of available international critical care guidelines in order to produce a succinct set of guidelines to aid critical care departments in reducing brachial plexus injuries during these challenging times. Discussion: There is no one manner in which prone positioning an unconscious patient can be made universally safe. This paper provides 6 key steps to reducing the incidence of brachial plexus injuries while proning and suggests a safe and sensible management and referral pathway for the conscious patient in which a brachial plexus injury is identified. Conclusion: There is in truth no completely safe position for every patient and certainly there will be anomalies in anatomy that will predispose certain individuals to nerve injury. Thus the injury rate cannot be reduced to zero but an understanding of the principles of protection will inform those undertaking positioning.

Introduction: Nerve injuries to the upper trunk, lateral cord and musculocutaneous nerve can result in the loss of active biceps contraction. Oberlin nerve transfer surgery is often performed to re-animate the biceps muscle. Outcome studies following this surgery almost exclusively focus on muscle strength. To date, no research has focused on the lived experience of motor recovery following Oberlin nerve transfer. Methods: A focus group discussion (n ¼ 6) allowed participants to give their accounts of successful restoration of active elbow flexion. Qualitative analysis of the transcript identified 'significant statements' which were used to generate themes and capture participants' lived experience. Results: Four main themes were identified as being important components of the lived experience: 'pain', 'patience and positive thought', 'functionality and daily lifestyle' and 'the biceps muscle' itself. Each theme was identified to have several subthemes and constituent parts. Conclusions: The lived experience of motor recovery is complex, multifaceted and individual to the patient. This study has identified areas where clinicians may be able to better tailor their care to the individual and suggested adjuncts to therapy have been included.