B/c you feet has to carry all your weight when you're walking. Something which your hands rarely has to do.
Because this tendon has to articulate the whole mass of the body, whereas in the wrist are several tendons and these only articulate the hand.
The heel has to support the whole body, the wrist doesn't.
A tendon is a type of connective-tissue band that attaches a muscle to a bone. In a frog, the tendon is attached to the foot through the extensor muscles.
The Achilles tendon is attached to the calf muscle (gastrocnemius). It is also attached to the heel bone (calcaneus). Achilles tendon is also known as the calcaneal tendon (calcaneal hence the heel bone calcaneus).
muscles connect to ligaments connect to bones!
tendon
tendon
tendon
Patella is the sesamoid bone, which has developed in the patellar tendon. This tendon is attached to the tuberosity on the upper and anterior part of tibia bone.
Muscles are attaches to tendons, which in turn are attached to bones. So if you wanted to bend your arm, the biceps pulls on the tendon which is attached to the Radius and Ulna.
The two tendons that are attached to the patella are: the quadriceps tendon, which attaches above, and the patellar tendon, which attaches on the bottom
A muscle insertion is the end of a muscle attached to the free-moving bone of its joint. A muscle origin is the end of the muscle attached to the relatively fixed bone of the joint.