Risser sign

Pelvis

Female type pelvis

Male type pelvis

Anatomical terms of bone

The Risser sign is an indirect measure of skeletal maturity, whereby the ossification stage of the iliac apophysis is used to judge the ossification of the spinal vertebrae.[1] On a scale of 5, it gives a measure of progression of ossification; the grade of 5 means that skeletal maturity is reached. Risser sign is based on the observation of an X-ray image.

The Risser sign is referenced in clinical decision-making regarding adolescent idiopathic scoliosis. The earlier the Risser Grade, the greater the likelihood of a scoliosis progressing to the point it becomes clinically significant and requires intervention.[2]

The correlation was first described by Risser in 1958,[3] with a graded classification scheme developed at a later time.

References

  1. Waldt, Simone; Woertler, Klaus (2014). Measurements and Classifications in Musculoskeletal Radiology. Thieme. pp. 126–127. ISBN 978-3-13-169271-9.
  2. http://www.aafp.org/afp/2002/0501/p1817.html
  3. Risser, J. C. (1958-01-01). "The Iliac apophysis; an invaluable sign in the management of scoliosis". Clinical Orthopaedics. 11: 111–119. ISSN 0095-8654. PMID 13561591.

Greulich WW, Pyle SI: Radiographic Atlas of Skeletal Development of the Hand and Wrist, 2nd edition. Stanford, . CA: Stanford University Press, 1959.

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