MediAI

  Keywords: Preiser disease, scaphoid avascular necrosis, idiopathic scaphoid AVN, wrist pain diagnosis, scaphoid collapse, proximal pole necrosis, radiology imaging of wrist, orthopedic hand surgery, MRI scaphoid necrosis, differential diagnosis of wrist pain Introduction Preiser disease is a rare but clinically significant form of idiopathic avascular necrosis (AVN) of the scaphoid , first described by Georg Preiser in 1910. Unlike post-traumatic scaphoid osteonecrosis, Preiser disease occurs in the absence of preceding fracture or trauma , posing diagnostic challenges for clinicians and radiologists alike. The scaphoid bone plays a central biomechanical role in wrist stability , bridging the proximal and distal carpal rows. Compromise of its vascular supply—especially in the proximal pole—can lead to progressive collapse, degenerative arthritis, chronic pain, and significant functional disability . Clinical Case Patient Profile: Age: 21 years Sex: Female Chief ...

  Trigger Finger, clinically known as stenosing tenosynovitis, is a prevalent and often painful condition affecting the hands, causing a characteristic "catching," "snapping," or "locking" sensation when bending or straightening the finger or thumb. This comprehensive column, leveraging both clinical case data and the latest medical literature, will provide a world-class, expert-level perspective on this disorder, focusing on its pathophysiology, diagnosis, management, and a detailed look at a common acute abdominal pain mimicker—Epiploic Appendagitis—to enhance the reader's diagnostic acumen. Understanding the Mechanism: Trigger Finger Pathophysiology and Etiology At its core, Trigger Finger is a type of constrictive tenosynovitis involving the flexor tendons of the digit, most commonly at the level of the A1 pulley . The flexor tendons are crucial for bending the fingers to make a fist. These tendons are held close to the bone by a system of fibrous...