Clarke, N. M. P., Harrison, M. H. M. and Keret, D.
The sagging rope sign: a critical appraisal
The Journal of Bone and Joint Surgery, 65, (3), . (PMID:6841397).
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Certain features of the sagging rope sign recently analysed by Apley and Weintroub (1981) are examined in detail. Evidence is presented to show that the line is a radiological shadow cast by the lateral edge of a severely deformed femoral head rather than a condensation of the spongiosa within the neck. An explanation is offered to explain the common association of the presence of this radiological sign with premature epiphysial fusion.
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