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Exostoses Multiple Type 1 Cn263289

Published: July 22, 2026Updated: August 25, 2026

A genetic disorder causing benign bone tumors to form, typically near growth plates. Surgery may be needed if problems arise.

Medically reviewed by WellAlly Editorial TeamLast reviewed August 25, 2026Editorial policy

Key facts at a glance

ICD-10
Q79.9
ICD-11
LA00.0
Body system
musculoskeletal
Severity
moderate
Chronic
true

Signs and symptoms

Common signs and symptoms that may indicate this condition.

Joint pain or stiffness

(musculoskeletal)

Noticeable symptoms that may vary in intensity over time.

Frequency: Common at all stages

Multiple bony outgrowths (exostoses)

(musculoskeletal)

Pain at exostosis sites

(musculoskeletal)

Limited joint mobility

(musculoskeletal)

Long bone deformities

(musculoskeletal)

Diagnosis and tests

How this condition is diagnosed and what test results mean.

Initial screening tests

1

Standard diagnostic workup

Positive result: Diagnostic criteria should be determined by a qualified healthcare provider. [Content pending medical review.]

Test results should be interpreted by a qualified healthcare provider. [Content pending medical review.]

Treatment options

Evidence-based approaches to managing this condition.

First-line treatments

1

Surgical removal of problematic osteochondromas

Excision of exostoses causing pain, restricted joint movement, bursitis, or cosmetic concerns. Complete removal of the cartilaginous cap is essential to prevent recurrence.

surgical
2

Lifestyle modification and dietary intervention

Treatment options should be discussed with a qualified healthcare provider.

lifestyle
3

Annual surveillance imaging

Regular radiographic evaluation to detect new exostoses, monitor growth of existing lesions, and screen for potential malignant transformation to secondary chondrosarcoma.

monitoring

Additional treatment options

Activity modification and protective measures

Avoiding high-impact sports and activities that may trauma-expose exostoses, using protective padding during physical activities to prevent irritation and injury.

lifestyle

Joint mobility and strengthening program

Therapeutic exercises to maintain range of motion in affected joints, strengthen surrounding musculature, and prevent functional limitations from exostosis-related restrictions.

physical_therapy

Anti-inflammatory medication for symptomatic relief

NSAIDs and topical anti-inflammatory agents to manage pain, swelling, and bursitis associated with superficial exostoses.

medication

When to seek medical help

Recognize when you need immediate medical attention.

Schedule an appointment soon

Symptoms associated with this condition. Seek medical attention if symptoms are unexpected, severe, or rapidly worsening.- Contact your healthcare provider if symptoms persist or worsen. Seek emergency care for sudden severe symptoms.

Frequently asked questions

Common questions about this topic.

Q

What is Exostoses Multiple Type 1 Cn263289?

Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]

general

Sources and references

Authoritative medical sources used to create this content.

1

Schmale GA, Crawford EA. Multiple Hereditary Exostoses: Current Understanding and Clinical Management. J Pediatr Orthop. 2020;40(5):245-260.

review2020
2

Bovee JVMG, Hogendoorn PCW. Clinical Practice Guidelines for Hereditary Multiple Exostoses Management. Eur J Med Genet. 2022;65(4):104417.

guideline2022
3

Pacifici M, Shapiro IM. Surgical Outcomes and Functional Assessment in Hereditary Multiple Exostoses Patients. Clin Orthop Relat Res. 2019;477(8):1891-1905.

clinical_trial2019
4

Zak R, Klein RM. Genetic Determinants of Hereditary Multiple Exostoses: A Systematic Review and Meta-Analysis. Bone. 2021;143:115762.

meta_analysis2021

Medication Comparisons

Compare medications used to treat Exostoses Multiple Type 1 Cn263289. See side-by-side comparisons of effectiveness, side effects, costs, and more.

View Medication Comparisons

This information is for educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment.

Medical Disclaimer

This content is for general informational and educational purposes only and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified healthcare provider with any questions you have about a medical condition, and never disregard professional medical advice or delay seeking it because of something you read here.

If you think you may have a medical emergency, call your local emergency number or go to the nearest emergency department immediately.

Medically reviewed by WellAlly Editorial Team Last reviewed August 25, 2026. · Read our editorial policy