Dipygus

Dipygus

Illustration of Dipygus Condition

Dipygus is a rare and severe congenital deformity characterized by a partial duplication of the lower body. This condition results in a forking of the body axis along the torso, with a duplication of the pelvis and lower limbs.

Definition and Characteristics

Dipygus involves the duplication of body parts from the waist downwards. This condition leads to the presence of four lower limbs, with the inner two often underdeveloped.

Anatomical Features

• The body axis forks left and right partway along the torso
• Duplication of the posterior end, including the pelvis and legs
• Inner hindquarters are typically smaller and less functional

Pathogenesis

Dipygus is a type of congenital deformity classified as teras catadidymum, meaning 'monster twinned below.' The exact cause of dipygus is not fully understood but is believed to involve genetic and environmental factors affecting embryonic development.

Comparison with Conjoined Twinning

• Dipygus differs from deformities caused by degenerated conjoined twins, such as in the case of Frank Lentini, who had a third leg from an incompletely separated twin.

Historical Cases

Myrtle Corbin

• Myrtle Corbin, born in the 19th century, was one of the most well-known individuals with dipygus.
• Despite her condition, she led a relatively normal life, marrying and having five children.

Clinical Presentation and Management

The severity and clinical implications of dipygus can vary. Management typically focuses on:

• Addressing mobility issues
• Surgical interventions to improve functionality and quality of life
• Physical therapy and rehabilitation

Epidemiology

Dipygus is an extremely rare condition, with only a few documented cases in medical history.

Social and Psychological Aspects

Individuals with dipygus may face significant social and psychological challenges, including mobility limitations and social stigma. Supportive care and counseling are important aspects of management.

References

Dipygus Resources
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