A small bursa over the dorsal surface of the index finger MCP joint between the extensor hood and the joint capsule, reducing friction during repetitive MCP flexion-extension cycles. It develops from direct trauma to the index knuckle in contact sports and repetitive occupational loading.
Index MCP dorsal bursitis presents as a dorsal knuckle swelling that is soft on palpation and separate from the joint. It is common in rock climbers, boxers, and keyboard workers. Aspiration yields clear or xanthochromic fluid without joint communication on arthrogram. Rheumatoid nodule (attached to extensor tendon), giant cell tumour of the tendon sheath (firmer), and trigger finger A1 pulley nodule (moves with tendon) are distinguished by clinical and ultrasound features.
Traumatic bursal inflammation at the index MCP dorsal surface from repetitive knuckle contact producing a tender dorsal swelling at the index knuckle, managed with padding and aspiration.
This website uses cookies to enhance your experience. Some are essential for site functionality, while others help us analyze and improve your usage experience. Please review your options and make your choice.
If you are under 16 years old, please ensure that you have received consent from your parent or guardian for any non-essential cookies.
Your privacy is important to us. You can adjust your cookie settings at any time. For more information about how we use data, please read our privacy policy. You may change your preferences at any time by clicking on the settings button below.
Note that if you choose to disable some types of cookies, it may impact your experience of the site and the services we are able to offer.
Some required resources have been blocked, which can affect third-party services and may cause the site to not function properly.
This website uses cookies to enhance your browsing experience and ensure the site functions properly. By continuing to use this site, you acknowledge and accept our use of cookies.
