SECT. CXI.—ON LUXATIONS.
We proceed to the treatment of luxations, which naturally follows that of fractures. A luxation then (to give a definition of it) is a displacement of a member from its proper cavity to an unusual place, by which means the voluntary motion is impeded. We have no other differences of it to mention, except that some are to a greater and some to a less degree. When the bone of a member, therefore, is completely removed from its place, the accident is called by the common name of luxation, but when only moved a little, or brought only to the brim of the cavity, it is called a subluxation.
Commentary. Celsus gives several important remarks upon dislocations in general, but as most of them may more properly be brought under particular heads, we shall notice them here but briefly. He distinguishes dislocations into two classes; the first consisting of a separation of two bones naturally united, such as the scapula from the humerus, the radius from the ulna, the tibia from the fibula, the os calcis from the bones of the ankle, which last is of rare occurrence, and the second being a removal of the bone of a joint from its proper place. When a dislocation occurs, as he remarks, the finger discovers a cavity in the part, and inflammation and fever come on, followed sometimes by gangrene and convulsions. If not reduced, the limb wastes. In a person who is lean, humid, and has weak nerves (muscles?) the dislocation is most easily reduced, but is more difficult to retain. The inflammation is to be reduced by the application of wool dipped in vinegar; by abstinence, a spare diet, and drinking tepid water. Afterwards friction, exercise, and a more generous diet are to be allowed. (viii, 11.)
See many curious remarks on this subject in Galen’s Commentary on Hippocrates (de Articulis), and in Apollonii Citiensis Scholia in Hip. et Galen.; also Avicenna (iv, 5, 1); Haly Abbas (Pract. ix, 101); Rhases (Cont. xxix, 2.)