. On modern methods of treating fractures . that with bones having a marrow cavitywhich will take a J-in. or larger peg, it is perfectly possible. However, these specimens, apart from the immediate objectwith which they were connected, show some j^oints of nearly all there was marked angulation from a bending of thepeg, and in four out of six there was some sepsis. This latter isof interest in its origin. The technique was exactly the same aswhen using the solid pegs. Why then was there so much greaterliability to sepsis ? The answer to this is found, I think, in the fact that the
. On modern methods of treating fractures . that with bones having a marrow cavitywhich will take a J-in. or larger peg, it is perfectly possible. However, these specimens, apart from the immediate objectwith which they were connected, show some j^oints of nearly all there was marked angulation from a bending of thepeg, and in four out of six there was some sepsis. This latter isof interest in its origin. The technique was exactly the same aswhen using the solid pegs. Why then was there so much greaterliability to sepsis ? The answer to this is found, I think, in the fact that the boneswere allowed too free mobility. This produces an excessiveeffusion, which leaks through the woimd. and this leakage causesa contamination from the skin, whilst the copious effusion in thetissues gives an ample soil for the growth of bacteria. The OPERATIVE TREAT-AIEXT 117 sepsis was trivial, but nevertheless quite important enoughcom2^1etely to modify the aspect of the case. In all cases there was great thickeninij of the bones, with. Fig. 66.—Two Cats Tibias after Union bv a Wire SpiralIntramedullary Peg.(a). No. 64, after 28 days. The -peg is stiJl in position. Great periostea]thickening. (6). No. 77, after 14 days. The peg has been removed by unravelling beforethe specimen was dissected. There is great periosteal thickening. In both casessepsis occurred, and in both the actual bone ends show no sign of repair. excess of callus. This was brought about partl}^ by the over-stimulation of mobilit}^, and partly by the inflammatoryirritation. Fig. 66 a is from No. 64 (twenty-eight days). The wire spiral 118 MODERN METHODS OF TREATING PRACTURES is still in position, and the great periosteal thickening is wellshown. Fig. 66 h is from No 77 (fourteen days), and shows the frac-ture in good position and undisturbed by the removal of thewire, which had been drawn out before opening the bone. I think a comparison of the experiments with solid metaland those with wire spiral pegs a
Size: 929px × 2689px
Photo credit: © Reading Room 2020 / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bo, bookcentury1900, bookdecade1910, bookidonmodernmethodso00grov
