Understanding extensor lag is essential for those who experience difficulties with finger extension, particularly following injury or surgery. This condition can significantly affect an individual’s daily life, impacting their ability to perform tasks that require fine motor skills. Extensor lag occurs when there is an inability to fully extend the fingers at the metacarpophalangeal joint, which can lead to functional limitations and discomfort. The mechanics of finger movement involve a complex interplay between tendons, muscles, and joints. When this balance is disrupted—whether due to trauma, tendon injuries, or neurological impairments—extensor lag can result. This condition can affect people of all ages, from athletes who may sustain injuries during sports activities…