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  2. Proximal femoral focal deficiency - Wikipedia

    en.wikipedia.org/wiki/Proximal_femoral_focal...

    There are typically four classes (or types) of PFFD, ranging from class A to class D, as detailed by Aitken. [4] [5]Type A — The femur bone is slightly shorter on the proximal end (near the hip), and the femoral head (the ball of the thigh bone that goes into the hip socket) may not be solid enough to be seen on X-rays at birth, but later hardens (ossifies).

  3. Thanatophoric dysplasia - Wikipedia

    en.wikipedia.org/wiki/Thanatophoric_dysplasia

    Type I is characterized by extreme rhizomelia, bowed long bones, narrow thorax, a relatively large head, normal trunk length and absent cloverleaf skull. The spine shows platyspondyly, the cranium has a short base, and, frequently, the foramen magnum is decreased in size. The forehead is prominent, and hypertelorism and a saddle nose may be ...

  4. Congenital amputation - Wikipedia

    en.wikipedia.org/wiki/Congenital_amputation

    Congenital amputation is birth without a limb or limbs, or without a part of a limb or limbs.. It is known to be caused by blood clots forming in the fetus while in utero (vascular insult) and from amniotic band syndrome: fibrous bands of the amnion that constrict fetal limbs to such an extent that they fail to form or actually fall off due to missing blood supply.

  5. Sirenomelia - Wikipedia

    en.wikipedia.org/wiki/Sirenomelia

    IV) partially fused femur, fused fibula V) partially fused femur VI) fused femur, fused tibia VII) fused femur, tibia absent. Sirenomelia is classified by the skeletal structure of the lower limb, ranging from class I, where all bones are present and only the soft tissues are fused, to class VII where the only bone present is a fused femur. [1]

  6. Tetra-amelia syndrome - Wikipedia

    en.wikipedia.org/wiki/Tetra-amelia_syndrome

    Hirotada Ototake (born 1976), Japanese sportswriter. Nick Vujicic (born 1982), The founder of Life Without Limbs. [6] A speaker and evangelist from Australia and America. [7] Prince Randian (1871–1934), A Guyanese-born American performer and a famous limbless sideshow performer of the early 1900s, best known for his ability to roll cigarettes ...

  7. Caudal regression syndrome - Wikipedia

    en.wikipedia.org/wiki/Caudal_regression_syndrome

    Formation of the sacrum/lower back and corresponding nervous system is usually nearing completion by the 4th week of development. Due to abnormal gastrulation, the mesoderm migration is disturbed. This disturbance results in symptoms varying from minor lesions of the lower vertebrae to more severe symptoms such as complete fusion of the lower ...

  8. Baby born with bones so brittle a sneeze could cause a fracture

    www.aol.com/news/china-doll-baby-brittle-bones...

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  9. Congenital vertebral anomaly - Wikipedia

    en.wikipedia.org/wiki/Congenital_vertebral_anomaly

    One study found that male German Shepherd Dogs with a lumbosacral transitional vertebra are at greater risk for cauda equina syndrome, which can cause rear limb weakness and incontinence. [ 10 ] The significance of transitional vertebrae has been questioned by one study finding similar prevalence in the general population as those with low back ...