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The fate of the articular cartilage in intracapsular fracture of the femoral neck (articular cartilage in femoral neck fracture)

✍ Scribed by Hayato Hirotani; Tetsuo Ito


Publisher
Springer
Year
1976
Tongue
English
Weight
926 KB
Volume
86
Category
Article
ISSN
1434-3916

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✦ Synopsis


The fate of the articular cartilage of the hip joint with intracapsular neck fracture was studied by histological, histochemical and autoradiographic techniques and by using a polarized microscope and a scanning electron microscope.

Cartilage specimens from 93 femoral heads and 7 acetabula were obtained from fractured hips 2 days to 4 ~ years postfracture and from control hips with various disorders.

The cartilage degeneration appeared 2 weeks after fracture and advanced steadily with time. The matrix was covered, invaded and ultimately replaced by the fibrous tissue. Chondrocyte viability, though it was lost from the surface, was recognized in the deep matrix even in the oldest fracture examined.

It is concluded that the humoral factor directly caused by the injury as well as the biomechanical impairment, i.e. a loss of physical stress, may play an essential role in the pathogenesis of the degeneration. The possibility of regeneration was discussed.

Zusammenfassung. Um den Verlauf der Knorpeldegeneration im Hiiftgelenk mit intrakapsul~rer Schenkelhalsfraktur klarzumachen, warden morphologische und autoradiographische Untersuchungen durehgefiihrt.

2 Wochen nach einer Fraktur fanden sich schon Zeichcn yon kartilagener Degeneration, und sie entwickelten sich mit der Zeit. Die Matrix war bedeckt, infiltriert, and sie wurde durch fibrSse Gebilde ersetzt. Die Chondrocyten iiberlebten nicht mehr in der Oberfl~che, jedoch bleiben sie, sogar an i~lteren Frakturen, lebhaft in der Tiefe der Matrix.

Wir sind der Ansicht, da6 nicht nur humorale Faktoren, die direkt durch Unfall ausgel6st warden, sondern auch biomechanische L~sionen, d. h. Aus-16sen des physikalisehen Strel3, eine gro6e Rolle spielen k6nnen. Die M6glichkeit der Regeneration wurde diskutiert.


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