knäextension
Knäextension refers to the movement that straightens the knee joint, moving the leg from a flexed position toward full extension. The primary muscles responsible for knee extension are the quadriceps (rectus femoris, vastus lateralis, vastus medialis, vastus intermedius), which act across the knee joint to straighten the leg. The movement is influenced by the patellofemoral mechanism and knee ligaments, and is stabilized by surrounding soft tissues during activity.
Biomechanics and range of motion: In a healthy adult, knee extension is considered full at 0 degrees,
Clinical significance: Adequate knee extension is essential for standing, walking, and many daily activities. A limitation
Rehabilitation and training: Restoring and maintaining full knee extension is a common rehabilitation priority after injury