Background: Freiberg’ s disease is an uncommon condition typified by bony infarction of the second metatarsal head with a vague multifactorial etiology which tends to mostly occur in women. Case Report: A 22-year-old woman presented with second metatarsal head local pain exacerbating while walking without any prominent previous trauma history; clinical and imaging workups revealed metatarsal head osteoNECROSIS of Freiberg’ s infarction. Conclusion: It should be kept in mind that for those complaining of forefoot discomfort, especially in the region of metatarsal heads, Freiberg’ s AVASCULAR NECROSIS (AVN) could be a potential pathology.

No consensus regarding optimal treatment or etiology of Preiser disease exists. We described the epidemiology, classification and treatment characteristics of 18 patients with Preiser disease. Patients with changes related to previous trauma, and without radiographs were excluded. Based on the radiographs at diagnosis, we classified 13 scaphoids as Herbert Lanzetta stage II, four as stage III, and one as stage IV. In 12 patients nonspecific treatment was offered and only two patients received surgical treatment. We found that chosen treatment is not associated with the severity of Herbert Lanzetta stage and the outcome is not influenced by chosen treatment.

Background: AVASCULAR NECROSIS of the femoral head typically occurs in the young population. Core decompression in the precollapse stage provides pain relief and preservation of the femoral head. The results of core decompression vary considerably despite the early diagnosis. Clinicians concur that primary treatment should focus on preserving the natural surface of the joint. This study investigated the predictive risk factors of failure in femoral head decompression. Methods: We retrospectively reviewed 135 patients and 207 hips (77 male (127 hips) and 58 female (80 hips)) who underwent core decompression (mean age: 34. 7 years [age range: 21-71]) from April 2010 to December 2017. All patients were followed by a mean of 57 months. All hips were in the precollapse stage (Ficat I, II). Results: A total of 207 hips were treated with core decompression surgery, and the overall success rate was 58%. The higher grade of Kerboul, Ficat, ARCO classifications, multifocal AVASCULAR NECROSIS of the femoral head, smoking, opium, and corticosteroids were significantly associated with a higher failure rate after core decompression in univariate analysis. In multivariate logistic regression analysis, the Kerboul and Ficat classifications, alcohol consumption, and multifocal AVASCULAR NECROSIS of the femoral head were significantly correlated with core decompression failure. The most common predictive factors in core decompression failure were Ficat II, Kerboul stage 3, multifocal AVASCULAR NECROSIS of the femoral head, and alcohol consumption. Conclusion: In conclusion, we had an overall 58 % success rate in core decompression of femoral head AVASCULAR NECROSIS. Based on the results of this study, imaging evaluation and imaging-based classifications are the most valuable predictor factors for the success of core decompression. Consistent with previous reports, corticosteroid was not a significant predictor of core decompression failure.

We report a case of a 40-year-old man who presented with left shoulder pain and marked functional impairment two days after receiving the second dose of the Pfizer COVID-19 vaccine. Advanced imaging demonstrated focal AVASCULAR NECROSIS (AVN) of his humeral head. Initial management included simple analgesics, activity modification, and an ultrasoundguided intra-articular hydrodilatation injection. The patient subsequently had an improved range of motion but persistent severe shoulder pain. He has now been offered surgical intervention. Despite having risk factors for developing AVN previously, the patient did not demonstrate any recent risk factors for developing the disease. COVID-19 vaccination is known to cause severe joint pain and stiffness rarely. However, AVASCULAR NECROSIS is not a known or documented side effect. His symptoms arose directly after the administration of the vaccine, with no other demonstrable cause. Therefore, we are reporting COVID-19 vaccination as a potential new risk factor for AVN of the humeral head.

Introduction: This study aimed to determine the prevalence of AVASCULAR NECROSIS of the femoral head in COVID-19 patients receiving corticosteroids at Baqiyatallah Hospital.Methods: In this cross-sectional study, COVID-19 patients who have received corticosteroids and at least six months have passed since receiving corticosteroids were contacted, and they were contacted about any pain in the area. Hip pain, lameness, and movement restrictions were assessed. If the patient had a suspicious history, we invited them to undergo an MRI.Results: The findings of this study showed that the prevalence of AVASCULAR NECROSIS is 9.2%, and none of the variables of age, sex, body mass index, dose of prednisolone, or remdesivir have a suitable predictive role in the occurrence of this complication (P<0.05).Conclusion: The study's findings showed that steroid treatment in COVID-19 is valuable. However, the adverse effects of this treatment are very severe. High-dose steroid therapy causes AVASCULAR NECROSIS, but case reports clearly show that steroid therapy cannot fully account for the rapid onset of AVASCULAR NECROSIS after recovery from COVID-19 infection, although it is a contributing factor.

Background: Brucellosis is a zoonotic disease mostly transmitted to humans through consumption of unpasteurized dairy products and can lead to a systemic disease with any organ involvement. In this report, we describe a case of brucellosis-induced AVASCULAR NECROSIS of the hip. Brucellosis was diagnosed through serological tests; andAVASCULAR NECROSIS of the femoral head was confirmed by pelvic MRI. The patient was treated with a combination of antimicrobial treatments and referred to the orthopedic service for total hip arthroplasty. Brucellosis may present with unusual manifestations and should be always taken into consideration, particularly in endemic areas.

AVASCULAR NECROSIS of the femoral head (AVNFH) is a leading cause of end-stage joint disease in the young population that can lead to total hip replacement in early life. There are various risk factors, including trauma, corticosteroids, thrombosis, hypertension, and alcohol. There is a growing number of patients with AVNFH and history of self-medication with herbal supplement used for weight gain in Iran. The present study aimed to demonstrate the prevalence rate of using unapproved weight gain supplements (UWGS) in patients with AVNFH. An observational and cross-sectional study was conducted to estimate the prevalence rate of using UWGSs in patients with osteoNECROSIS at Imam Khomeini Hospital, Tehran, Iran, from January 2012 to 2018. The data were analyzed in SPSS software (version 24) through descriptive statistics and tests of means. Out of 207 patients with AVNFH, 115 cases were male. In total, 44 patients (20. 95%) had a history of using UWGSs, and there had no other risk factors of osteoNECROSIS of FH. In conclusion, UWGSs can be a risk factor for AVNFH, and it is necessary to develop educational programs to alert young population about the side effects of these supplements.