Congenital pseudoarthrosis of the tibia

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Congenital pseudoarthrosis of the tibia

ORPHA:295018Clinical subtype

Also called Congenital pseudarthrosis of the tibia

What it is

A rare bone development disorder characterized by mostly anterolateral bowing of the tibia usually evident at birth, with subsequent non-healing fractures and formation of a false joint (pseudoarthrosis), and instability and angulation at the pseudoarthrosis site. In the vast majority of patients the defect is unilateral, and more than half of the cases are associated with neurofibromatosis type 1.

Key facts

Classified as
Clinical subtype

ICD-10 codes

Q74.2filed under a broader ICD-10 category — shared with 9 other rare diseases

ICD-10 has no distinct code for most rare diseases, so many are filed under the nearest available one. A shared code identifies the group, not this disease — the ORPHAcode above is what identifies it.

Cross-references

MONDO 0017462UMLS C0265661

Orphadata Science: Free access data from Orphanet. © INSERM 1999. Data version 2026-06-23. Available under CC BY 4.0. This is a reference, not medical advice.

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