[Biomechanics of the hip joint in children].
Based on the data derived from the examination of 16 infantile and juvenile anatomical hip specimens as well as the radiological examination of 1350 hip joints of healthy children, a biomechanical model of the developing hip was computed. This two-dimensional vector model describes the forces acting on the growth plates of the head and the greater trochanter during the one-legged stance. It could be proven that the apophysis of the greater trochanter is subject to compressive stress by lateral-cranial traction bands and therefore corresponds with a "pressure apophysis". The muscle forces acting on the trochanter apophysis can be combined as a trochanteric resultant RT. This stimulates a lateral-cranial growth of the trochanter apophysis. The direction of the hip abductors and, as a result, also the direction and the length of Pauwels' hip resultant R are influenced by this mechanism.
Heimkes
B
B
Orthopädische Universitäts-Poliklinik Innenstadt, LMU München.
Posel
P
P
Plitz
W
W
D000293:Adolescent; D001696:Biomechanical Phenomena; D002648:Child; D002675:Child, Preschool; D003198:Computer Simulation; D005269:Femur / Q000502:physiology; D006132:Growth Plate / Q000502:physiology; D006621:Hip Joint / Q000000981:diagnostic imaging / Q000254:growth & development / Q000502:physiology*; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D011859:Radiography; D013314:Stress, Mechanical
Studien zur Biomechanik des kindlichen Hüftgelenkes.