The injured athlete often reduces the dislocated finger. If not, usually gentle traction will suffice to reduce the subluxated PIP joint. Reduction of a true dislocation requires reproduction of the original angle of injury to realign the joint surfaces and traction on the middle phalanx with volarly directed pressure at its base. Regional blocks, muscle relaxants, finger-trap traction and arm-loaded countertraction facilitate the difficult reductions, unless there is a hindering soft tissue entrapment. The ease of reduction is proportional to the quantity of intact ligament and inversely proportional to the size of the fragment. Fragments greater than 40% of the base herald instability. Joint congruity takes precedence over anatomic reduction of the fracture, for the subtlest incongruities may lead to chronic pain, degenerative changes, and ankylosis. The goal is stable, smooth, and pain-free range of motion of the affected joint. This may be surprisingly difficult to attain.

Essentials of Human Physiology

Essentials of Human Physiology

This ebook provides an introductory explanation of the workings of the human body, with an effort to draw connections between the body systems and explain their interdependencies. A framework for the book is homeostasis and how the body maintains balance within each system. This is intended as a first introduction to physiology for a college-level course.

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