Achilles tendon (AT) pathologies are common musculoskeletal conditions that can significantly impair function. Despite various traditional treatments, recovery is often slow and may not restore full functionality. The use of extracellular vesicles (EVs) has emerged as a promising therapeutic option due to their role in cell signaling and tissue regeneration. This systematic review aims to consolidate current in vivo animal study findings on the therapeutic effects of EVs on AT injuries. An extensive literature search was conducted using the PubMed, Scopus, and Embase databases for in vivo animal studies examining the effects of EVs on AT pathologies. The extracted variables included but were not limited to the study design, type of EVs used, administration methods, efficacy of treatment, and proposed therapeutic mechanisms. After screening, 18 studies comprising 800 subjects were included. All but one study reported that EVs augmented wound healing processes in the AT. The most proposed mechanisms through which this occurred were gene regulation of the extracellular matrix (ECM), the enhancement of macrophage polarization, and the delivery of therapeutic microRNAs to the injury site. Further research is warranted to not only explore the therapeutic potential of EVs in the context of AT pathologies, but also to establish protocols for their clinical application.

Despite advances in imaging and diagnostics, calcific constrictive pericarditis (CCP) remains a rare and challenging entity, often masquerading as other cardiopulmonary conditions, leading to delayed diagnosis. We present a 70‐year‐old male with a history of heart failure, atrial fibrillation (AF), cirrhosis, chronic obstructive pulmonary disease (COPD), and prior pleural effusion, who was admitted with acute hypoxic respiratory failure and AF with rapid ventricular response (RVR). Imaging revealed extensive pericardial calcifications, leading to a diagnosis of CCP. The patient’s clinical course was marked by refractory hypotension, altered mental status, and progressive cardiohepatic syndrome. Given his high surgical risk, he was managed conservatively and transitioned to palliative care. This case underscores the diagnostic and therapeutic challenges of CCP, particularly in patients with complex comorbidities where surgical intervention is not feasible. It highlights the need for early recognition and individualized management strategies to optimize outcomes in this challenging subset of patients.

Esotropia, which is the medial deviation of one or both eyes, is a rare withdrawal symptom that has been associated with opiate addiction. We report a case of a 36-year-old female patient who developed acute-onset esotropia and diplopia after self-admission to a psychiatric facility for fentanyl addiction treatment and a systematic review of this rare presentation. A search of four databases (PubMed, Scopus, Embase, and Google Scholar) was conducted as of January 2024. We found 15 documented cases of opiate withdrawal-associated esotropia, with an average age of 27.2 years and an average time between last use and symptom onset of 5.61 days. The most common symptom was diplopia, especially binocular diplopia, and the majority of cases resolved without pharmacologic intervention. Considering the current opioid crisis, our systematic review and case report add valuable insight into the less-explored neurological and ophthalmological consequences of opiate withdrawal, a condition that should always be considered in cases of acute or chronic onset esotropia.