Two, that is to say, one violent, and the other gentle; thus the Dislocation is made violently in Falls, Strains, Knocks, and Blows; but it is done gently and slowly in Defluctions of Rheum; as also by an insensible gathering together of Humours between the Joints, and upon the Ligaments, the Relaxation or loosening of which gives occasion afterward to the Head of the Bone to go out of its place; whence this Consequence may well be drawn, _viz._ that a violent Dislocation usually depends upon an external Cause, and a gentle Dislocation upon an internal. _After how many manners doth a Dislocation happen?_ Two several Ways; _viz._ the first is called compleat, total, and perfect; and the second incompleat, partial, and imperfect: But both may happen before, behind, on the inside, and without; and may also be simple or complicated. _What are the signs of a perfect, total, and compleat Dislocation?_ It is when a hard Tumour or Swelling is perceiv'd near a Hole in the place of the Joint, great pain being felt in the Part, and the Motion of it abolish'd. _What are the signs of an imperfect, partial, and incompleat Dislocation?_ {183} It is when the Motion is streighten'd, and weaker than ordinary, so that some Pain is felt in the Joynt, and a Deformity may be discern'd therein, by comparing the hurt Part with the opposite which is found: This Dislocation is otherwise call'd a Sprain, when it proceeds from an external Cause; or else it is termed a Relaxation, when it happens by an internal. _What is a simple, and what is a complicated Dislocation or Luxation?_ The Dislocation is properly simple, when it hath no concomitant Accidents; and it is complicated when accompany'd with some ill Symptoms or Accidents, such as Swellings, Inflammations, Wounds, Fractures, &c. _What are the means proper to be us'd in a simple Dislocation?_ A speedy and simple reducing thereof, which is perform'd by stretching out the dislocated or luxated Member, and thrusting back the Head of the Bone into its natural place. Afterward the Joynt must be strengthen'd with a Fomentation made with Provence Roses, the Leaves of Wormwood, Rosemary, Camomile, St. _John_'s-Wort, and Oak-Moss boil'd in the Lees of Wine and Forge-Water, keeping the Part well bound up, and sustain'd in a convenient situation. But if any ill Consequence is to be fear'd, apply _Emplastrum Oxycroceum_, or _Diapalma_ dissolv'd in Wine. _What is to be done in a complicated Dislocation?_ {184} The Accidents must be first remov'd, and then the Bone may be set, which is impossible to be done otherwise; it being dangerous even to make an Attempt before, by reason of the too great Violence with which it is effected, and which would infallibly produce a Convulsion or a Gangrene. _If the Dislocation be accompany'd with a Wound, must the Wound be cur'd before any Endeavours are us'd to reduce it?_