A tendon is a tension-resistant connective-tissue structure that connects a muscle to a bone. It consists mainly of parallel type I collagen fibres and has a small proportion of cells (tenocytes) and ground substance.
Tendons transfer the force generated by muscle contraction to the skeleton, enabling joint movements. Because of their comparatively low blood supply, regeneration after overload or injury is often slower than in muscle tissue. Examples include the Achilles tendon, the patellar tendon and the tendons of the rotator cuff.