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Ortopedická protetika Praha sro - Společnost pro pojivové tkáně

Ortopedická protetika Praha sro - Společnost pro pojivové tkáně

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vertebrae, asymmetrical fusions so-called<br />

unsegmented unilateral or bilateral bars<br />

or symmetrical blocks of vertebral bodies,<br />

absent ribs or fused ribs. CSD occurs as<br />

an isolated anomaly and cause scolioses,<br />

kyphoses, lordoses, kyphoscolioses, lordoscolioses,<br />

blocks of vertebral bodies. The<br />

certain localisation of CSD can be pathognomonic<br />

or major component of syndromic<br />

association. It includes spondylocostal and<br />

spondylothoracic dysplasia, ischiovertebral<br />

dysplasia, cerebrofaciothoracic dysplasia or<br />

they are a part of other genetic syndromes,<br />

e.g. Robinow syndrome, Klippel-Feil syndrome,<br />

Sprengel sequence, etc. There are<br />

not rare nosologic units of so-called oculo-<br />

-auriculo-vertebral spectrum with severe<br />

involvement of spine and facial stigmatization,<br />

e.g. Goldenhar syndrome, VACTERL<br />

association and Spondylocarpotarsal synostosis<br />

syndrome where scoliosis is malignantly<br />

<strong>pro</strong>gressive early in life and steadily<br />

during the growth.<br />

Multiple CSD and fusion of ribs are<br />

seldom balanced in their distribution and<br />

result in a severe congenital scoliosis that<br />

is unrelentingly <strong>pro</strong>gressive with subsequent<br />

growth. From the biomechanical<br />

point of view the worst <strong>pro</strong>gression of<br />

congenital scoliosis is caused by combination<br />

of segmented hemivertebra and unsegmented<br />

lateral bar. The worst kyphosis is<br />

consequence of anterior unsegmented bar<br />

and hemivertebra. Isolated hemivertebra<br />

results in a short, relatively mild curvature<br />

that is usually inconspicuous. Progression<br />

of such a curvature is unlikely.<br />

Systemic (developmental) spine deformities<br />

(SSD) are a pathognomonic symptom<br />

of some bone dysplasias (especially<br />

those with predominant involvement of<br />

spine e.g. pseudoachondroplasia, metatropic<br />

dysplasia, spondyloepiphyseal dysplasia<br />

congenita, etc.), metabolic disorders (e.g.<br />

osteomalatic syndrome, idiopathic juvenile<br />

osteoporosis, mucopolysaccharidoses and<br />

oligosaccharidoses, etc.), collagen bone<br />

diseases (e.g. osteogenesis imperfecta,<br />

Marfan and Ehlers-Danlos syndromes) and<br />

some genetic syndromes (e.g. Turner syndrome).<br />

Pathogenesis of SSD is determined<br />

by molecular genetic factors. Severity of<br />

spine defects and/or deformities similarly<br />

like at long bone deformities is influenced<br />

by functional adaptation of bone tissue<br />

according to previously defined mechanisms<br />

of bone remodelling (Utah paradigm by<br />

H. Frost, 1996).<br />

The <strong>pro</strong>gnosis of congenital and systemic<br />

spine deformities in any given child<br />

may be difficult to predict and, therefore,<br />

repeated clinical and radiographic examinations<br />

at regular intervals are required<br />

to choose the most ap<strong>pro</strong>priate form of<br />

treatment. Our strategy is to begin with<br />

physiotherapy, rehabilitation and bracing<br />

as soon as possible and according to the<br />

course of curvature (regular radiographic<br />

follow up especially during growth spurt)<br />

the decision for conservative and/or surgical<br />

treatment is individually made.<br />

An important pathognomonic sign of<br />

SSD as well as CSD is secondary osteoporosis<br />

of any degree. Growth (especially acceleration<br />

of growth in puberty) is the most<br />

suitable period for complex treatment of<br />

SSD and also CSD that instead of mentioned<br />

conservative and surgical treatment<br />

includes monitored medication of suitable<br />

calciotropic drugs. Treatment using calciotropic<br />

drugs should be monitored by<br />

examination of bone metabolism markers<br />

and dual energy densitometry (DXA) with<br />

application of child soft wear (at indicated<br />

cases by histological, histochemical examination<br />

and histomorphometry is carried<br />

POHYBOVÉ ÚSTROJÍ, ročník 14, 2007, č. 3+4 245

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