Korrekturosteotomien am Knie. Faktoren, welche die Meßwinkel auf a.p. Röntgenaufnahmen, durch Verprojizierung, verändern

Abstract

Comparing radiographies we have examined the degree in which the static angles of the knee are affected, because of a fault projection under the influence of some factors. We have found that an inwards or an outwards turn, even of a small degree (IQ), a bending or preexistent (pathological) anomalies, each alone or in combination, affected the right projection of the angles in a face radiography. Physiological knees possibly are presented like "varum" or "valgum" projectional. It is clear that the right position during the taking of the radiography is of a great significance in order to decide about the indication of osteotomy and to determine the degree of correction. We suggest as a criterion of the right radiographies the factor "patellacondylus".

Achsvermessung bei Knie-TEP: Ganzbeinstandaufnahme als Golden Standard

“…Möglicherweise ist es erforderlich, durch zusätzliche Messungen die Tibiarotation bzw. die Schenkelhalsantetorsion zu ermitteln [5,9,10,11]. Schon Janssen hat 1979 [12] auf die torsionsbedingten Fehlerquellen bei der Ausmessung der Standardröntgenbilder des Kniegelenks hingewiesen.…”