Proximal phalangeal fractures are relatively common and may result in a great deal of disability. The mechanism of action usually results from a direct perpendicular force, a rotary force, or hyperextension of the finger. The physical examination is the same as that for distal phalangeal fractures (see above).
Dense irregular connective tissue are tissue types found in the dermis. subcutaneous layer. The Dermis of the skin is composed of Dense Irregular Connective Tissue. skin tissue.
In the human skin, the dermal papillae (DP) (singular papilla, diminutive of Latin papula, 'pimple') are small, nipple-like extensions (or interdigitations) of the dermis into the epidermis.At the surface of the skin in hands and feet, they appear as epidermal or papillary ridges (colloquially known as fingerprints).Blood vessels in the dermal papillae nourish all hair follicles and bring nutrients and oxygen to the lower layers of epidermal cells.The pattern of ridges they produce in hands and feet are partly genetically determined features that develop before birth.ermal papillae also play a pivotal role in hair formation, growth and cycling. In mucous membranes, the equivalent structures to dermal papillae are generally termed connective tissue papillae, which interdigitate with the rete pegs of the superficial epithelium.