Shifting the paradigm: ankylosis arthroplasty for the proximal interphalangeal joint with a novel collateral ligament reconstruction.

Silicone arthroplasty for proximal interphalangeal joint ankylosis is rarely performed, partly due to the potential for lateral joint instability. We present our experience performing proximal interphalangeal joint arthroplasty for joint ankylosis, using a novel reinforcement/reconstruction technique for the proper collateral ligament. Cases were prospectively followed-up (median 13.5 months, range 9-24) and collected data included range of motion, intraoperative collateral ligament status and postoperative clinical joint stability; a seven-item Likert scale (1-5) patient-reported outcomes questionnaire was also completed. Twenty-one ankylosed proximal interphalangeal joints were treated with silicone arthroplasty, and 42 collateral ligament reinforcements undertaken in 12 patients. There was improvement in range of motion from 0° in all joints to a mean of 73° (SD 12.3); lateral joint stability was achieved in 40 out of 42 of collateral ligaments. High median patient satisfaction scores (5/5) suggest that silicone arthroplasty with collateral ligament reinforcement/reconstruction should be considered as a treatment option in selected patients with proximal interphalangeal joint ankylosis.Level of evidence: IV.

DEVELOPMENT of INFLAMMATORY MYOPATHY after COVID-19

Background: It has been more than a year and a half since the WHO announced a pandemic of a new coronavirus infection caused by SARS-CoV-2. The virus belongs to the respiratory group, but it it can damage various organs and tissues of the body. COVID-19 infection is characterized by pathological activation of immunity, violated synthesis of pro-infammatory, immunoregulatory, anti-infammatory cytokines, such as interleukins-1 and-6, tumor necrosis factor α and others. These features contribute to the development of rheumatic diseases and syndromes in people who have had COVID-19. Cellular and humoral immune responses are also of primary importance in the pathogenesis of infammatory myopathies. Objectives: Description of a case of severe dermatomyositis after COVID-19. Methods: The 34-year-old female patient complained of pain and weakness in the proximal muscles of the upper and lower extremities, difficulty swallowing solid and liquid food, rash on the face, neck, chest and arms. In August 2020 she had a mild case of COVID-19. A month later, faky erythematous papules like Gottron's sign appeared on the extensor surfaces of the metacarpophalangeal joints and proximal interphalangeal joints of the hands. Six months later, sore throats, hoarseness of voice, belching of air, choking on solid food and episodes of subfebrility joined. Refux esophagitis, duodenitis was detected by fbrogastroduodenoscopy. After 9 months, there were muscle pains and muscle weakness, erythema on the face, neck and chest, the patient lost 11 kg. She was hospitalized in the rheumatology department with suspected dermatomyositis. Results: On objective examination: proximal myopathy, erythematous rashes on the face, neck, chest, Gottron's erythema on the hands. In the analyses: clinical analysis of blood and urine without pathology, ANA 1:1280, creatinkinase 5370 IU/l, with an increase in dynamics up to 9260 IU/l, CRP 0.03 mg/dl, LDH 1023 IU/l, rheumatoid factor and anti-ds DNA were negative. Nasal regurgitation was detected during radiography of the pharynx with contrast. Instrumental examination revealed no signs of a tumor process. Fibrogastroduodenoscopy-superfcial refux-esophagitis, duodenitis, Chest CT-interstitial pneumonitis, abdominal ultrasound without pathology, ECG-sinus rhythm, normal EOS position, accelerated A-V conduction, echocardiography-minor separation of pericardial leaves (up to 5 mm), colonoscopy-dolichosigma. The patient was diagnosed with idiopathic dermatomyositis of high activity. Because of progressive myopathy and increasing dysphagia, pulse therapy with methylpredniso-lone500 mg for 3 days and rituximab 1000 mg was performed. She also received metipred 48 mg per day orally, methotrexate 15 mg per week subcutaneously and folic acid 5 mg per week. Against the background of therapy, positive dynamics was noted: swallowing normalized, the severity of myopathy decreased, after 10 days CKdecreased to 2049 IU/l. After 6 months during the control examination: there are no skin rashes, muscle strength is restored, CK 300 IU/l. The dose of methylprednisolone is reduced to 10 mg per day, the patient continues injections of methotrexate 15 mg per week. Conclusion: COVID-19 may be a trigger for the development of infammatory myopathy. In this clinical case there are features of the course and therapy of infammatory myopathies in patients after coronavirus infection.

Evaluation of factors associated with surgical site infection in equine proximal interphalangeal joint arthrodesis: 54 cases (2010-2019).

BACKGROUND: The frequency of surgical site infection (SSI) following orthopaedic implant placement in horses has been reported but not compared with respect to specific antibiotic protocols administered. OBJECTIVES: To determine factors associated with SSI in horses undergoing proximal interphalangeal joint (PIPJ) arthrodesis including perioperative antibiotic protocols. METHODS: Records were evaluated (2010-2019), and horses undergoing PIPJ arthrodesis were identified. Patient signalment, supervising surgeon, reason for surgery, limb, implants placed, anaesthetic time, duration casting/coaptation postoperatively, antibiotic regimen and incidence/onset SSI were recorded. Bayesian and frequentist logistic regressions were used to estimate the contribution of covariates to infection occurrence. RESULTS: Fifty-four PIPJ arthrodeses were performed. SSI occurred in 2/54 (3.7%) on day 15,30. Arthrodesis was performed most commonly for osteoarthritis (33/54, 61.1%), fracture (11/54, 20.4%), and subluxation (5/54, 9.3%). Perioperative systemic antibiotics were administered 1-3 days (15/54, 27.8%) or > 3 days (39/54, 72.2%). Antibiotic protocols included cefazolin/gentamicin (20/54, 37%), cefazolin/gentamicin/doxycycline (14/54, 25.9%) and potassium penicillin/gentamicin (10/54, 18.5%). Regional limb perfusion was performed preoperatively 31/54 (57.4%) and postoperatively 7/54 (13%). Survival to dismissal was 98.1% (53/54 horses) with one horse euthanized due to support limb laminitis. No association was identified between antibiotic selection or duration (1-3 vs. > 3 days), pre-operative regional antibiotic perfusion, intraoperative antibiotic lavage or anaesthetic time (< or > 3 h) and SSI; however, modelling was complicated by quasi-complete or complete separation of the data. Bayesian analysis (but not frequentist analysis) indicated an association between post-operative regional antibiotic perfusion and SSI. Limitations include the retrospective nature of data collection and the low rate of infection overall. CONCLUSIONS: The prevalence of SSI in this population was lower than that in previous reports of equine orthopaedic internal fixation. There was no difference in SSI rate in cases administered systemic antibiotics for 1-3 days or >3 days, or for those horses that did or did not receive preoperative regional antibiotic perfusion.

A self-limiting symmetrical polyarthritis following COVID-19 infection

Case report-IntroductionWe describe an acute onset self-limiting seronegative non-destructive symmetrical polyarthritis five weeks after laboratory confirmed COVID-19 infection.Case report-Case descriptionA 37-year-old male hospital doctor of presented to the Early Inflammatory Arthritis clinic with a four-week history of acute onset joint pain, swelling and early morning stiffness in excess of two hours. The symptoms began at the left ankle with Achilles' tendonitis but progressed over the following 72 hours to a symmetrical polyarthritis affecting the wrists, proximal interphalangeal joints, shoulders, elbows, and knees.Approximately five weeks prior to the onset of his joint symptoms he had laboratory confirmed SARS-CoV-2 infection with six days of fever, non-productive cough, and fatigue. He did not require hospitalisation.His past medical history was significant for biopsy proven non-alcoholic fatty liver disease. There was no prior history of inflammatory arthritis and no personal or family history of skin psoriasis, inflammatory bowel disease or uveitis. There was no preceding genitourinary or gastrointestinal upset. His family history was significant for a sister with seronegative rheumatoid arthritis for which she was taking sulfasalazine.Examination revealed a normal BMI, synovitis at the wrists and proximal interphalangeal joints without evidence of joint effusion in the large joints. Blood tests revealed elevations in the ESR (83 mm/hour, reference range 0-10 mm/hour) and CRP (25mg/dL, reference range <5mg/dL). Serology was negative for the rheumatoid factor, anti-CCP antibodies, antinuclear antibodies, and an extractable nuclear antigen panel. Radiographs of the affected joints were unremarkable. Serological testing was positive for anti-SARS-CoV-2 IgG antibodies.He was started on oral Prednisolone 20mg daily and an NSAID with good symptomatic response and normalisation of his ESR (5mm/hour) and CRP (<1mg/dL). The course of prednisolone was tapered over a 6-week period and he is still in steroid free remission with normal inflammatory markers at follow up. The patient was given a diagnosis of a post-viral reactive arthritis which was attributed to the preceding COVID-19 illness.Case report-DiscussionPost infectious inflammatory arthritis has been described with many viral infections including: hepatitis virus, parvovirus B19, enterovirus, rubella, alphavirus (including Chikungunya), flavivirus (including Zika), herpes viruses (including Epstein-Barr virus), varicella, cytomegalovirus and human immunodeficiency virus (HIV). Interestingly, viral arthritis has not been reported in influenza and human coronaviruses (including SARS and MERS). Arthralgia was reported in 14.9% of laboratory confirmed COVID-19 cases in China during the early phases of the pandemic but inflammatory arthritis was not well described.The clinical course of the inflammatory arthritis in this case was self-limiting with enthesitis and synovitis resolving within six weeks of onset with the mainstay of treatment being symptomatic relief in the form of non-steroidal anti-inflammatory drugs and corticosteroids.Patient perspective: When I woke up that Tuesday morning with severe joint pains and stiffness, I knew something was not right. It was not like anything I have felt before in terms of my joints, having had sports injuries in the past. It was to the point where I was even struggling to go from sitting to standing. Without Prednisolone, I feel as if I would not have been able to work and may even have been house bound. I was relieved that this inflammatory arthritis did respond to Prednisolone. After six weeks of taking Prednisolone, the condition seemed to settle.Case report-Key learning pointsA self-limiting episode of inflammatory arthritis may occur following COVID-19 infection.