. A treatise on dislocations and fractures of the joints. The cause was as follows:—When Ihad divided the bone, the knee became bent, the condyles of the osfemoris pressed against the inner side of the patella, and thrust theparts asunder, and only a ligamentous union took place. Experiment II.—August 2d, 1818, I broke in the same manner thepatella of a rabbit, and examined the parts on September 3d, when Ifound the two portions of bone widely separated, and united only byligamentous matter. I now began to think it impossible for the pa-tella to unite by bone, but determined to make another ex
. A treatise on dislocations and fractures of the joints. The cause was as follows:—When Ihad divided the bone, the knee became bent, the condyles of the osfemoris pressed against the inner side of the patella, and thrust theparts asunder, and only a ligamentous union took place. Experiment II.—August 2d, 1818, I broke in the same manner thepatella of a rabbit, and examined the parts on September 3d, when Ifound the two portions of bone widely separated, and united only byligamentous matter. I now began to think it impossible for the pa-tella to unite by bone, but determined to make another experiment todetermine this point. Experiment III.—I divided the patella lon-gitudinally in a dog, but took care that thedivision should not extend into the tendonabove or to the ligament below it, so thatthere should be no separation of the two por-tions. 1 examined it three weeks after, andfound it united, no separation existing be-tween the two portions. The union waspartly by bone, partly by cartilage. Experiment IV.—October, 1819. I divided. OF THE PATELLA. 209 the patella by a crucial fracture into four portions; the two upperportions neither united with each other nor with the bones below, butthe two lower portions became united by bone. It appears, then, that under longitudinal and transverse fracture, aligamentous union is generally produced, and that it arises from theseparation produced in the bone; but that if they cannot separate,and their parts remain in contact, ossific union may be produced. Case CXXXIII. In the summer of 1819, Mr. Marryat was thrownfrom his gig as he was passing along the Strand : by the fall he frac-tured his patella transversely, and the lower portion of the bone wasalso broken perpendicularly, so that it was divided into three transverse fracture united, as usual, by ligament, but the perpen-dicular by bone; and Mr. Parrott, of Tooting, tells me that the latterbecame very firmly consolidated, with a line or ridge to be trace
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Keywords: ., bookcentury1800, bookdecade1840, booksubjectfractur, bookyear1844
