Acromioclavicular joint Stabilization: Our experience with the lockdown technique.

Background: Acromioclavicular joint (AC joint) disruption is a common injury with considerable variation with regards to surgical management. The Lockdown™ procedure (previously known as Surgilig™), Modified Weaver-Dunn procedure, Arthroscopic AC joint stabilization and Ligament Augmentation and Reconstruction system (LARS) procedure have all been described for treatment of this injury with varying outcomes. Purpose: To measure the functional and radiological outcomes following all cases of AC joint reconstruction using the Lockdown™ technique over the last 10 years at Medway Maritime Hospital. Methods: Data on a total of 53 patients who underwent AC joint reconstruction between 2012 and 2021 were collected. Electronic records were used to extract data regarding patient characteristics, surgery details, and duration of follow-up. Telephonic interviews of patients were conducted to collect data on hand dominance, surgical complications, and responses to Oxford shoulder score (OSS) and QuickDASH score questionnaires. Hospital PACS data were reviewed to record preoperative injury severity and postoperative acromioclavicular joint reduction. Results: Results for 42 patients were available and analysed as 10 could not be contacted and 1 patient sadly passed away. Of the patients reviewed, 92.9% were males with a mean age of 42.2 years (Range 16-67 years) and mean follow up of 68 months (12-119.1 months). The injury involved the dominant arm in 59.5%cases. Majority of the cases were Rockwood type V injuries (71.43%) while the rest were either type III(19.05%) or type IV(9.52%).The mean preoperative OSS was 21.3/48 which improved to 44.3/48 in the postoperative period. Similarly, the mean QuickDASH score was 50.6 preoperatively, that improved to 9.1 postoperatively.The most common patient reported complication was prominent metalwork seen in 5 cases (11.6%) followed by stiffness seen in 3 cases (7%) and superficial infection seen in 1 case (2.3%). The AC joint remained reduced radiologically in 81% of cases, while a resubluxation between 50 and 100% was seen in the rest of the cases. Patients with radiological resubluxation did not report this as a complication in 87.5% of the cases. Overall, 38 patients reported their outcome as excellent, 2 patients rated it good while 1 patient reported it as fair and 1 as poor. Conclusion: The Lockdown™ technique for stabilization of AC joint has excellent or good patient satisfaction in 95.2% of cases in long term follow up of more than 5.7 years. Prominent metalwork and stiffness are the commonest clinical complications. Radiological resubluxation can be seen in a fifth of the cases but does not directly lead to patient dissatisfaction. Level of evidence: Level IV Retrospective case series.

Model based examination of radiocarbon contribution from Indonesian throughflow to the south-eastern tropical Indian Ocean.

Shallow seawater coral records from the south-eastern tropical Indian Ocean region can be investigated to study Indonesian throughflow (ITF). In this study, the radiocarbon records of Porites corals were used to estimate lateral transport via ITF and to understand the influence of ITF on radiocarbon levels of surface waters in the south-eastern tropical Indian Ocean. A simple box model based on radiocarbon was applied for this purpose. Model estimated a mean lateral transport via ITF to be 12.5 × 106 m3 s-1 towards the south-eastern tropical Indian Ocean region using pre-bomb radiocarbon records. The model was further used to reconstruct post-bomb radiocarbon level in the Cocos Island surface water and result was compared with the observed value. The box model result demonstrated that along with air-sea CO2 exchange, the ITF was also an important contributor of bomb radiocarbon to the surface water of the south-eastern tropical Indian Ocean. The box model showed that the ITF significantly contributed bomb radiocarbon to the surface water of the south-eastern tropical Indian Ocean after the rapid increase in bomb radiocarbon in the region.

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.

Minimally invasive hallux valgus correction: Is it better than open surgery?

BACKGROUND: The aim was to compare the minimally invasive (MIS) chevron osteotomy to the well-established open chevron osteotomy for the correction of hallux valgus deformity. METHODS: Two retrospective cohorts of patients treated with MIS or open chevron osteotomy for hallux valgus correction, matched for age and gender with a minimum follow up of six months were reviewed. Functional outcomes were evaluated using pre and post-operative Manchester Oxford Foot and Ankle Questionnaire (MOXFQ), Visual Analog Score (VAS) for pain and the Unified Elective Orthopaedic Score (UnEOS). Two independent, blinded examiners evaluated the radiographic correction of hallux valgus (HV) and intermetatarsal (IM) angle. RESULTS: A Total of 54 cases (27 per study group) with a mean follow-up of 25.9 months were included in the study. Pre-operatively, VAS (p = 0.76) and MOXFQ (p = 0.46) scores and HV angle (p = 0.1) were comparable in both groups. However, IM angle was significantly larger in the MIS group (p = 0.005). Post-operatively there was significant improvement in VAS and MOXFQ scores as well as significant correction of the HV and IM angles (p < 0.0001) for both groups. Comparing the two procedures, there was no significant difference between groups for VAS (p = 0.34), MOXFQ scores (p = 0.56) and HV angles (p = 0.069) but the MIS technique was significantly better in improving the IM angle (p = 0.016). The post-operative UnEOS score and the Satisfaction UnEOS domain reached excellent levels for the entire cohort with no statistical difference between the two groups (p = 0.2 and 0.28 respectively). CONCLUSION: Results show MIS chevron osteotomy provides better radiographic correction of the IM angle but functional outcomes for all parameters were comparable to the open technique. It can therefore be considered at least equivalent to standard open surgery when compared using validated Patient Reported Outcome Measures (PROMs).

Medium-term mortality after hip fractures and COVID-19: A prospective multi-centre UK study.

PURPOSE: The COVID-19 pandemic has caused 1.4 million deaths globally and is associated with a 3-4 times increase in 30-day mortality after a fragility hip fracture with concurrent COVID-19 infection. Typically, death from COVID-19 infection occurs between 15 and 22 days after the onset of symptoms, but this period can extend up to 8 weeks. This study aimed to assess the impact of concurrent COVID-19 infection on 120-day mortality after a fragility hip fracture. METHODS: A multi-centre prospective study across 10 hospitals treating 8% of the annual burden of hip fractures in England between 1st March and 30th April, 2020 was performed. Patients whose surgical treatment was payable through the National Health Service Best Practice Tariff mechanism for "fragility hip fractures" were included in the study. Patients' 120-day mortality was assessed relative to their peri-operative COVID-19 status. Statistical analysis was performed using SPSS version 27. RESULTS: A total of 746 patients were included in this study, of which 87 (11.7%) were COVID-19 positive. Mortality rates at 30- and 120-day were significantly higher for COVID-19 positive patients relative to COVID-19 negative patients (p < 0.001). However, mortality rates between 31 and 120-day were not significantly different (p = 0.107), 16.1% and 9.4% respectively for COVID-19 positive and negative patients, odds ratio 1.855 (95% CI 0.865-3.978). CONCLUSION: Hip fracture patients with concurrent COVID-19 infection, provided that they are alive at day-31 after injury, have no significant difference in 120-day mortality. Despite the growing awareness and concern of "long-COVID" and its widespread prevalence, this does not appear to increase medium-term mortality rates after a hip fracture.

Management of Severely Displaced Radial Neck Fractures in Children: A Systematic Review and Meta-analysis of Outcomes.

BACKGROUND: This systematic review is an attempt to provide an evidence-based analysis of literature on management of severely displaced radial neck fractures (with > 60° displacement) in children. MATERIAL AND METHODS: A systematic literature search was conducted to identify all original articles published between 01/01/1999 and 20/01/17 on surgical treatment of radial neck fractures in children in the following databases: MEDLINE, EMBASE, and CINAHL PLUS. Studies reporting pre-operative fracture displacement and post-operative outcomes according to standard outcome measures were included. RESULTS: Out of 887 studies identified on initial search, 48 were eligible for full-text review and 14 studies with a total of 173 patients were included in the final review. The overall success rate after severely displaced radial neck fractures in skeletally immature patients was 87% (95% CI, 82%, 92%). Closed reduction methods reported higher success rate of 90% (95% CI, 85%, 95%) compared to open reduction methods 77% (95% CI, 63%, 89%). CONCLUSION: The average rate of patients achieving excellent/good outcomes following surgical management after severely displaced radial neck fractures in this review is better than reports from previous reviews. Considering the limitations in current evidence base including lack of direct comparison of techniques and small study samples, large comparative studies controlling for possible confounders are merited.

Central Chest Pain - An Atypical First Presentation.

INTRODUCTION: The diagnosis of thoracic spondylodiscitis is challenging, given that it is a rare entity in itself and when unusual symptoms such as central chest pain predominate on presentation, it may pose a serious diagnostic challenge. CASE REPORT: A 54-year-old patient presented to accident and emergency with central chest pain and elevated inflammatory markers (C- reactive protein [CRP]: 21 mg/L). Following exclusion of life-threatening cardiac causes, he was discharged home with analgesia and no formal diagnosis. Over the course of the subsequent 6 weeks, he presented to his general practitioner on two different dates with worsening chest pain alongside a new symptom of back pain and progressively rising inflammatory markers. At 6 weeks, he presented back to the emergency department with clinical signs of sepsis, mid-thoracic tenderness with weakness and altered sensation to his legs. The CRP was raised at 297 mg/L. In view of these symptoms, a contrast magnetic resonance imaging scan was performed which revealed destruction of the sixth and seventh disc space with high signal intensity on T2 and short tau inversion recovery images in T6 and T7. Blood cultures were shown to have grown Staphylococcus aureus, and the patient was subsequently treated with combined intravenous antibiotics (flucloxacillin) and oral antibiotics (rifampicin) for 15 weeks resulting in complete resolution of his symptoms. CONCLUSION: Our case report highlights the need for a high index of suspicion of spondylodiscitis in patients presenting with central chest pain, unresolving back pain and elevated inflammatory markers especially in the absence of any other formal diagnosis.