The main IP joint in between the proximal and intermediate phalanges is recognized as the proximal interphalageal joint (PIP joint). The collateral ligaments on both sides on the finger joint are made of hard, very organized collagen fibers. This composition gives them energy and adaptability to manage the various actions https://israelvjtdm.evawiki.com/9702966/a_review_of_monkey_for_sale_in_usa