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Start free with EleplanTibial muscular dystrophy
ORPHA:609Disease
Also called Finnish tibial muscular dystrophy · TMD · Udd myopathy · Distal myopathy, Udd type · Distal titinopathy
What it is
Tibial muscular dystrophy (TMD) is a distal myopathy characterized by weakness of the muscles of the anterior compartment of lower limbs, appearing in the fourth to seventh decade of life.
Key facts
- Prevalence
- 1-9 / 100 000 (Europe)
- Age of onset
- Adult
- Inheritance
- Autosomal dominant, Autosomal recessive
- Classified as
- Disease
Prevalence figures describe populations, not individuals, and are often estimates from a single study. Where the figure is an incidence or a birth prevalence, it says so.
Signs and symptoms
Common30–79%
12- Ankle weakness
- Centrally nucleated skeletal muscle fibers
- EMG: myopathic abnormalities
- Foot dorsiflexor weakness
- Gait disturbance
- Increased muscle lipid content
- Increased variability in muscle fiber diameter
- Mildly elevated creatine kinase
- MyopathyDiagnostic criterion
- Peroneal muscle atrophy
- Rimmed vacuoles
- Steppage gait
These ranges are how often a sign appears across everyone diagnosed, not a prediction for one person — most people have some of these and not others. Orphanet also records findings that are specifically absent in this disease; those are in the data but not listed here.
Gene
ICD-10 codes
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.
Related health topics
Reached through the ICD-10 categories this disease is filed under, so these describe the broader group rather than this disease specifically.
Benefit programs to look at
Programs whose eligibility touches the same ICD-10 categories. Eligibility is decided by the administering agency, never by this page.
Cross-references
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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