Flat back deformity

Classification according to ICD-10
M40.3	Flat back
M96.4	Postoperative lordosis
M96.8	Other diseases of the musculoskeletal system following medical measures
ICD-10 online (WHO version 2019)

The flat back deformity , English flatback syndrome , occurs in some patients after scoliosis surgery with Harrington rods .

root cause

If the normal lumbar lordosis is reduced or eliminated as a result of the straightening operation, the trunk leans forward and hip or back pain is caused by the chronic compensatory posture with premature wear of the intervertebral disc and the adjacent vertebrae ( osteochondrosis intervertebralis ).

distribution

The phenomenon does not appear after all straightening operations, but mainly after fixation of lumbar segments of the lumbar spine .

Not to be confused is the so-called “crankshaft” (crankshaft) phenomenon , which sometimes occurs in young people who have undergone surgery, with increasing rotational misalignment below the surgically fixed vertebral segments due to the further growth of the vertebral bodies.

literature

M. Akbar, T. Dreher, F. Schwab, G. Omlor, H. Wang, T. Bruckner, C. Carstens, B. Wiedenhöfer: Evaluation of the sagittal profile after surgical treatment of thoracic adolescent idiopathic scoliosis Lenke type 1. In: The orthopedist. Vol. 42, No. 3, March 2013, pp. 150-156, doi: 10.1007 / s00132-012-2060-2 , PMID 23429997 .

Individual evidence

↑ Baron S. Lonner: Flatback Syndrome
^ DC Lu, D. Chou: Flatback syndrome. In: Neurosurgery clinics of North America. Vol. 18, No. 2, April 2007, pp. 289-294, doi: 10.1016 / j.nec.2007.01.007 , PMID 17556130 (review).
↑ M. Pecina, T. Dapic: More than 20-year follow-up Harrington instrumentation in the treatment of severe idiopathic scoliosis. In: European spine journal: official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society. Vol. 16, No. 2, February 2007, pp. 299-300, doi: 10.1007 / s00586-006-0223-8 , PMID 17024401 , PMC 2200686 (free full text).
↑ F. Hefti: Pediatric Orthopedics in Practice. Springer 1998, ISBN 3-540-61480-X , p. 101

[1] Baron S. Lonner: Flatback Syndrome

[2] DC Lu, D. Chou: Flatback syndrome. In: Neurosurgery clinics of North America. Vol. 18, No. 2, April 2007, pp. 289-294, doi: 10.1016 / j.nec.2007.01.007 , PMID 17556130 (review).

[3] M. Pecina, T. Dapic: More than 20-year follow-up Harrington instrumentation in the treatment of severe idiopathic scoliosis. In: European spine journal: official publication of the European Spine Society, the European Spinal Deformity Society, and the European Section of the Cervical Spine Research Society. Vol. 16, No. 2, February 2007, pp. 299-300, doi: 10.1007 / s00586-006-0223-8 , PMID 17024401 , PMC 2200686 (free full text).

[4] F. Hefti: Pediatric Orthopedics in Practice. Springer 1998, ISBN 3-540-61480-X , p. 101