The treatment of fractures . after fracture otthese parts. Refracture of the Bones of the Lower Extremity.—It is not an uncommon experience to find that a patient with a fractureof the thigh, leg, or patella refractures the partially united refracture is due to either muscular violence or a slight is ordinarily little displacement of the fragments. The cal-lus of the original injury holds the bones quite securely. Theleg is usually bent at the seat of the fracture. Refracture is,therefore, practically a fracture of callus. This accident haseven occurred while the patient i
The treatment of fractures . after fracture otthese parts. Refracture of the Bones of the Lower Extremity.—It is not an uncommon experience to find that a patient with a fractureof the thigh, leg, or patella refractures the partially united refracture is due to either muscular violence or a slight is ordinarily little displacement of the fragments. The cal-lus of the original injury holds the bones quite securely. Theleg is usually bent at the seat of the fracture. Refracture is,therefore, practically a fracture of callus. This accident haseven occurred while the patient is wearing a protective splint of POTT S FRACTURE 379 plaster-of-Paris. Union in these cases is much more rapid thanafter the original injury. About one-half the time required forunion of the original fracture is necessary for union of the re-fracture. The patient may, therefore, be much encouraged, forthough the accident of refracture is a disheartening one, yet hewill not be obliged to look forward to a longr Fig. 536.—Same as figure 535. Lateral displacement of foot inward (see X-ray tracing, Fig- 537)- POTTS FRACTUREAnatomy.—The anatomical relations of the lower ends ofthe fibula and tibia and the astragalus and os calcis should bekept constantly in mind. The os calcis and astragalus are heldfirmly together, forming the posterior portion of the foot. Theastragalus rests mortise-like between the internal and externalmalleoli (see Fig. 528). The strength of the inferior tibiofibular 38o FRACTURES OF THE LEG articulation depends upon the strong inferior tibiofibular liga-ments, particularly upon the interosseous ligament. By Potts fracture of the ankle is understood the injury causedby forcible eversion and abduction of the foot upon the leg. Thelesions which may be present in this fracture are a rupture of theinternal lateral ligament, a fracture of the tip of the internalmalleolus, a separation of the lower tibiofibular articulation, anoblique fracture of
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