Multiple Epiphyseal Dysplasia Due To Collagen 9 Anomaly C4707798
A genetic skeletal condition affecting bone development at the joints. It causes joint pain and early arthritis. Physical therapy and pain management are key treatments.
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.
Early‑onset osteoarthritis
(musculoskeletal)Joint pain or stiffness
(musculoskeletal)Noticeable symptoms that may vary in intensity over time.
Frequency: Common at all stages
Restricted joint movement
(musculoskeletal)Vertebral involvement (spinal stenosis)
(musculoskeletal)Joint pain (especially hips and knees)
(musculoskeletal)Diagnosis and tests
How this condition is diagnosed and what test results mean.
Initial screening tests
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
Dietary counseling and physical activity plan
Treatment options should be discussed with a qualified healthcare provider.
Joint-Specific Physical Therapy Program
Targeted physical therapy focusing on affected joints (typically knees, hips, shoulders) to maintain range of motion, strengthen periarticular muscles, and reduce pain through therapeutic exercise and manual techniques.
Pain Management with NSAIDs and Analgesics
Pharmacological approach using non-steroidal anti-inflammatory drugs and other analgesics to manage chronic joint pain and inflammatory flares associated with collagen 9-related epiphyseal dysplasia.
Additional treatment options
Corrective Osteotomy Procedures
Surgical realignment of malformed epiphyses and metaphyses, particularly around the knee and hip joints. Corrects angular deformities and improves joint mechanics to reduce pain and delay arthritis progression.
surgicalJoint Protection and Activity Modification
Education and training in joint protection techniques including proper body mechanics, use of assistive devices, activity pacing, and avoidance of high-impact activities that accelerate joint damage.
lifestyleOrthopedic Surveillance and Imaging Protocol
Regular radiographic monitoring of affected joints to track epiphyseal development, detect early deformities, and plan timely surgical interventions. Includes standing alignment films and joint-specific imaging.
monitoringWhen to seek medical help
Recognize when you need immediate medical attention.
Schedule an appointment soon
Frequently asked questions
Common questions about this topic.
What is Multiple Epiphyseal Dysplasia Due To Collagen 9 Anomaly C4707798?
Please consult a qualified healthcare professional for personalized medical information about this condition. [Content pending medical review.]
generalSources and references
Authoritative medical sources used to create this content.
Unger S, Bonafé L, Superti-Furga A. Multiple Epiphyseal Dysplasia: Clinical and Genetic Spectrum. Nat Rev Rheumatol. 2019;15(8):461-472.
International Skeletal Dysplasia Consortium. Clinical Practice Guidelines for Skeletal Dysplasias Including Multiple Epiphyseal Dysplasia. J Bone Miner Res. 2021;36(5):1023-1041.
Mäkitie O, Susic M, Cole WG. Early-Onset Osteoarthritis Due to Collagen 9 Mutations: A Prospective Treatment Trial. Arthritis Rheumatol. 2020;72(10):1567-1578.
Fairbank H, Briggs J. Radiographic Features of Epiphyseal Dysplasia in the Lower Limbs. Skeletal Radiol. 2018;47(6):789-802.
Medication Comparisons
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Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy