Prosthetic joint infections of the shoulder: A review of the recent literature.

Introduction: Shoulder arthroplasty is a common treatment for shoulder arthritis. Prosthetic joint infection of the shoulder (PJIS) is a debilitating complication to the patient and the healthcare system. Incidence of infection is 0.98-5% for primary arthroplasty. The mean hospital cost for two-stage revision was approximately $35,824. The aim of this paper is to review the recent literature and collate the latest evidence to aid diagnosis and treatment of this serious complication. Methods: A literature review was performed using PubMed and Google Scholar databases. A search strategy was adopted using the keywords: 'infection' AND 'shoulder arthroplasty' OR 'total shoulder arthroplasty'OR 'TSA' OR 'reverse shoulder arthroplasty' OR 'RSA' OR 'rTSA'. This initial search resulted in 349 articles. A PRISMA flowchart process was followed. Duplicates were removed, screening was performed and the resulting full texts were analysed and further excluded, leaving 46 articles suitable for inclusion. A PICO search strategy was also used. Results and interpretation: Risk factors for PJIS include procedure type, trauma indications and patient factors.The organism commonly isolated is Cutebacterium acnes, which makes diagnosis challenging due to its indolent nature. Investigations include biochemical tests, synovial aspirate, tissue cultures and radiological examinations.Treatment depends on the depth of the infection and the patient requirements. Medical treatment with antibiotics to local debridement, cement spacer and revision arthroplasty have all been described in the literature. A multidisciplinary decision is made on the microbiological evidence and patient factors. Conclusion: PJIS is a rare but potentially devastating complication of shoulder arthroplasty and diagnosis is often challenging. There has been much research performed recently, providing more evidence on how to optimise management.

Lessons From a Near-Peer Junior Doctor Teaching Program in Trauma and Orthopedics.

INTRODUCTION:  A junior doctor teaching program delivered by near-peers can foster collaboration in a less-pressured and conducive learning environment. The aim of this study was to provide an analysis of an orthopedic teaching program in a high-resource environment utilizing readily available tools and resources that are potentially available in most hospitals globally.  Methods: This study involved the utilization of an outcome-based learning approach with regular formal feedback. An anonymized Google Forms survey using a 10-point Likert scale was conducted after a 30-week period. The survey tool was sent out to 28 doctors and two senior nurse practitioners who participated in the program either as tutors, learners, or both. A total of 19 out of 30 respondents completed the survey giving a 63% survey completion rate. The setting for this study was the trauma and orthopedics department in a United Kingdom district general hospital. RESULTS:  Learners' confidence in their orthopedic knowledge and skills pre-program had a median response of eight with a mode of seven whereas confidence following engagement on the program improved with a median response of nine and a mode of 10. At an alpha level of 0.05, this observed improvement was statistically significant using the Mann-Whitney U test (p=0.466). Tutors' perception of the usefulness of the teaching feedback had a median response of nine with a mode of 10. Relevance of the selected topics had a median response of nine and a mode of 10. Inclusion in the teaching program to cater to learner diversity had a median response of nine and a mode of 10. The effectiveness of a blended approach for learning had a median response of nine and a mode of 10.  Conclusion: This study has provided evidence of the benefits of a near-peer teaching program. This is especially important in the post-coronavirus disease (COVID) pandemic recovery period where easily accessible and well-grounded educational programs will be useful to complement the deanery teachings for trainees. This is important as this may be the main source of formal teaching for non-trainee junior doctors in many hospital settings. Additional research will be needed to further explore the pros and cons of such programs within a surgical specialty like orthopedics with an emphasis on the various pedagogical approaches to teaching and learning for junior doctors working in a busy clinical setting.

Traumatic rotator cuff tears - Current concepts in diagnosis and management.

Rotator cuff tears represent one of common shoulder pathologies presenting over a wide spectrum of age groups and varying presentation. Typically, rotator cuff tears occur more frequently in elderly than in younger patients, following a chronic or acute-on-chronic course and usually secondary to due to tendon degeneration. Though there has been a considerable debate in the literature of the terms "acute" and "traumatic" used in the classification of rotator cuff tears, there appears to be consensus about the need for early diagnosis to facilitate prompt surgical treatment and the improve patient outcome. Significant differences in rotator cuff tears between those occurring in younger and older patients could be due to mechanism of injury, presentation, severity of the tear, biological healing potential and rehabilitation. Acute traumatic rotator cuff tears especially in younger age group represent a distinct entity from other patterns of rotator cuff tears. Consequently, a high index of suspicion, focused clinical examination, complementary imaging is a pre-requisite for an early diagnosis and effective management. We analyze the biomechanical consequences of acute rotator cuff tears along with characteristic mechanism of injury and spectrum of tendon involvement. The evolving concepts in the diagnosis and management of these distinct injuries are discussed with review of current literature.

Dupuytren's Contracture - Current Concepts.

Dupuytren's contracture is a common condition that has the potential to be debilitating. It presents in a variety of manners and can be mild or more aggressive in its progression. There are a large number of management options currently available. In this review of the evidence, non-operative and operative management options are examined, with a consideration of post-operative rehabilitation and complications. A summary of the current concepts in the management of Dupuytren's contracture is presented.

Outcomes following arthroplasty for proximal humeral fractures.

Fractures of the proximal humerus are very common and increasing in incidence within an ageing population. The majority of undisplaced fractures can be treated conservatively. Displaced fractures in good quality bone or in the young are considered for surgical fixation. However, displaced and comminuted fractures with or without dislocation, especially in the elderly, cannot be reliably treated with fixation. These patients are generally considered for joint arthroplasty. This review article focuses on the outcome following arthroplasty for proximal humeral fractures.

Outcomes following fixation for proximal humeral fractures.

Fractures of the proximal humerus are a very common presentation in modern Trauma and Orthopaedic practice. In an ever-aging population, the incidence has dramatically increased resulting in a large socioeconomical burden. The surgical management of these injuries has evolved over the years. Patient outcomes are variable and there is no consensus on treatment approach. This review article focuses on the outcomes following fracture fixation using common surgical techniques.

Current concepts in management of ACJ injuries.

Acromioclavicular joint injury is common in young individuals who suffer direct trauma to the shoulder. Treatment of acromioclavicular dislocation is controversial with regards to the indication of operative management, timing of surgery, whether to perform open or arthroscopic surgery, method of stabilisation (rigid or non-rigid) and type of graft used for repair or reconstruction. Current evidence supports conservative management for Rockwood types I and II, while types IV, V and VI benefit from surgery. The optimal management of type III injuries in high demand patients remains contentious. Surgical options include acromioclavicular fixation, coracoclavicular fixation and coracoclavicular ligament reconstruction. Few studies with a low level of evidence suggest arthroscopic techniques and anatomical ligament reconstruction have better outcomes when compared to older techniques of rigid coracoclavicular fixation. The aim of this article is to look at the current evidence and address these controversial issues.

Bone block procedures for glenohumeral joint instability.

Glenoid bone loss is a well established cause of instability and long term morbidity if not adequadely addressed. Anterior glenohumeral instability due an anterior glenoid defect is significantly more common, and for many years has been well treated with open anterior bone block augmentation procedures, most commonly the latarjet procedure. However, with refinement of this technique and some interest in reducing morbidity associated with iliac crest bone harvest, arthroscopic bone block procedures with allograft has become more popular. In this article we will review some of the key available evidence. We will also review management of the less common and more challenging posterior glenoid defects associated with posterior instability.

Early versus delayed mobilization following rotator cuff repair.

Rotator cuff tears are a common cause for pain and reduced function. Tears of the tendons of the cuff can be a result of a degenerative process or as a consequence of trauma. Management of cuff tears are surrounded by controversy from indications for surgical management to rehabilitation protocol post-surgical repair. The aim of post surgical rehabilitation is to improve functional outcome, reduce pain and promote tendon healing. In the case of rotator cuff repair, rehabilitation can be broadly divided into early passive range of motion (EPM) and delayed range of motion (DRM). The EPM regime is defined by minimal immobilisation of the shoulder and passive mobilisation of the joint within the first post-operative period. In contrast, DRM immobilises the shoulder joint up to six weeks post-operatively. Proponents of EPM state various advantages of their rehabilitation protocol including improved range of motion and earlier return to normal activities of daily living. However, there has also been concern that this rehabilitation regime may result in an increased rate of re-rupture. Since this is a highly controversial issue, various high quality literature have been published looking to clarify which regime is best following rotator cuff surgery. Reviewing these articles, it appears that there is an increase rate of re-tear of the repaired rotator cuff tendon when the EPM regime is employed. Statistical significance however was limited by small sample sizes. Range of motion post-repair also appears to be associated with post-operative rehabilitation regime. As expected, the EPM regime has been shown to improve range of motion post-repair. Despite this, literature reports patients managed with the DPM showed a statistically better patient reported outcome measure. We conclude that based on the evidence we currently have, early range of motion post rotator cuff repair is related with an increase risk of re-tear. The DPM regime reduces this risk with the possible complication of reduced range of shoulder movement. This problem is thought to be an easier clinical issue to deal with compared to re-rupture of the repaired rotator cuff tendon. There is however lack of data to achieve statistical significance in most of these analysis. There is a definite need for a large, multi-centre single blinded randomised controlled trial to further shed light on this controversial topic.

Current Concepts in the Diagnosis and Treatment of Shoulder Impingement.

Subacromial impingement syndrome (SIS) is a very common cause of shoulder pain in the young adults. It can cause debilitating pain, dysfunction, and affects the activities of daily living. It represents a spectrum of pathology ranging from bursitis to rotator cuff tendinopathy which can ultimately lead to degenerative tear of the rotator cuff. Various theories and concepts have been described and it is still a matter of debate. However, most published studies suggest that both extrinsic and intrinsic factors have a role in the development of SIS. The management is controversial as both nonoperative and operative treatments have shown to provide good results. This article aims to provide a comprehensive current concepts review of the pathogenesis, etiologies, clinical diagnosis, appropriate use of investigations, and discussion on the management of SIS.