By Professor Friedrich Pauwels Dr. med., Dr. med. h. c., Dr. Ing. E. h. (auth.)
The contents of this publication are dependent nearly completely on in basic terms anatomical researches. those have been inspired by means of questions posed in scientific perform. the implications are directed to training surgeons. Their chronological series ends up in a step-by-step improvement of theoretical bases and to a revolutionary rejection of previous conceptions. specifically within the box of orthopaedic surgical procedure, a accountable angle is feasible neither with out stable anatomical wisdom, nor with no an idea of practical relationships. W. Roux had already validated this and he sought after his works of useful anatomy to be thought of from this standpoint. He exceptionally preoccupied himself with a uniform conception of practical variation. hence it's comprehensible that the theories ofRoux shaped the foundation from which to begin. Our personal researches appeared at the beginning to corroborate the tips of Roux, no less than partially. this can be nonetheless obvious within the monograph relating fractures of the femoral neck. Later it seemed that ST. KROMPECHER had made a step forwards within the topic of chondrogenesis whilst he deserted the shear thought postulated by way of Roux and held that compression was once the single powerful stimulus for the forma tion of cartilage. The study about the therapeutic of fractures is based partially at the conception of KROMPECHER which was once new at the moment. yet finally a growing number of discoveries may possibly now not be defined through this perception which was once basically a bit diversified from the older theories (1. WOLF, W. Roux, W.
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Additional resources for Biomechanics of the Locomotor Apparatus: Contributions on the Functional Anatomy of the Locomotor Apparatus
61. The femoral neck is transformed into a wide band of connective tissue. The Fracture of the Femoral Neck. A Mechanical Problem Fig. 33) The effective shearing force is also able to destroy healthy bony tissue the diameter of which is much greater than that of the bony trabeculae. This is demonstrated by a case the X -rays of which were put at my disposal by FROND of Osnabriick. The reduction had led to a very favourable impaction of the upper corner of the neck fragment into the head fragment (Fig.
33) The effective shearing force is also able to destroy healthy bony tissue the diameter of which is much greater than that of the bony trabeculae. This is demonstrated by a case the X -rays of which were put at my disposal by FROND of Osnabriick. The reduction had led to a very favourable impaction of the upper corner of the neck fragment into the head fragment (Fig. 62). But, as a result of the pronounced inclination of the plane of the fracture, the effect of the effective shearing force was so great that the bony tissue was unable to withstand it.
This stands out in the theoretical diagrams Figs. 69 and 70. If the latent compressive stressing acts on a sufficiently wide part of the fracture site, the pseudarthrosis can still be secondarily guided to healing by bone by a method of treatment (above all by nailing) appropriate for a fresh type 2 fracture. But, in order for the treatment to be effective, in these cases it is The Fracture of the Femoral Neck. A Mechanical Problem Fig. 69 Fig. 70 necessary that the pseudarthrosis should be formed of connective tissue and that a nearthrosis should not have formed in the meantime, covering up the fracture surfaces with cartilage (see p.