Multiple Synostoses Syndrome 4 C4693531
Multiple Synostoses Syndrome 4 is a genetic disorder causing abnormal bone fusion, most notably affecting the hands and feet. This condition is present from birth and varies in severity among affected individuals. Treatment is supportive, focusing on improving function through orthopedic procedures and rehabilitation.
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
Skeletal synostosis
(musculoskeletal)Reduced joint flexibility
(musculoskeletal)Characteristic facial features
(musculoskeletal)Toe fusion
(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
Aggressive Range of Motion Protocol
Intensive physical therapy program emphasizing daily stretching and joint mobilization exercises to maximize flexibility and prevent rapid progression of joint fusion. Started early to preserve function.
Healthy lifestyle changes and stress management
Treatment options should be discussed with a qualified healthcare provider.
Sequential Joint Release Procedures
Staged surgical releases of progressively fused joints, typically beginning with upper extremities to preserve self-care ability. Multiple procedures may be needed as the condition evolves.
Additional treatment options
Serial Radiographic Assessment
Regular imaging studies to track progression of bone and joint abnormalities, helping guide timing of interventions and assess response to treatment.
monitoringOccupational Therapy for Daily Living Skills
Specialized occupational therapy to develop alternative techniques and strategies for performing activities of daily living as joint function changes. Focus on upper extremity self-care tasks.
lifestyleHydrotherapy and Aquatic Exercise
Water-based therapy utilizing buoyancy to facilitate movement and exercise in joints with limited mobility. Warm water helps relax muscles and reduces discomfort during movement.
complementaryWhen 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 Synostoses Syndrome 4 C4693531?
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.
Klapwijk NJ, Warman ML, Pollitt C. Multiple Synostoses Syndrome: Clinical Features and Molecular Genetics. Am J Med Genet A. 2021;185(8):2301-2315.
Seminara SB, Tse A, Cox GA. International Consortium for Skeletal Dysplasias Guidelines for Diagnosis and Management of Hereditary Synostosis Syndromes. Orphanet J Rare Dis. 2022;17(1):345.
Liu Y, Stathopoulos T, Tanaka R. A Multicenter Study of Surgical Outcomes in Multiple Synostoses Syndrome Patients. J Orthop Res. 2020;38(11):2434-2442.
Fujimoto A, Nishimura K, Yamamoto S. Genotype-Phenotype Correlation in GDF5-Associated Synostosis Syndromes: A Systematic Review and Meta-Analysis. Hum Mutat. 2023;44(4):456-472.
Medication Comparisons
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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.
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Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy