Proximal Symphalangism 1a C3714899
A genetic bone condition where fingers or toes are fused at the joints, limiting mobility. It can run in families. Treatment includes physical therapy and sometimes surgery to improve function.
Key facts at a glance
- ICD-10
- Q79.9
- ICD-11
- LA00.0
- Body system
- musculoskeletal
- Severity
- mild
- Chronic
- true
Signs and symptoms
Common signs and symptoms that may indicate this condition.
Joint pain or stiffness
(musculoskeletal)Mild symptoms that may not significantly impact daily life.
Frequency: Common at all stages
Proximal finger joint fusion
(musculoskeletal)Reduced finger flexibility
(musculoskeletal)Hand stiffness
(musculoskeletal)Difficulty gripping objects
(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
Clinical observation with periodic imaging
Regular follow-up appointments to monitor joint development, functional impact, and any progression of the symphalangism through physical examination and periodic X-rays.
Healthy lifestyle changes and stress management
Conservative management and lifestyle modifications may be sufficient. Monitor symptoms.
Footwear modification and orthotic support
Use of wide-toe box shoes and custom orthotic devices to accommodate toe anatomy, reduce friction, and improve gait mechanics.
Additional treatment options
Joint mobilization and strengthening exercises
Physical therapy program designed to maximize function of adjacent unaffected joints, improve overall foot biomechanics, and maintain range of motion in compensatory structures.
physical_therapyCorrective osteotomy and joint reconstruction
Surgical intervention to realign toe bones, separate fused joints if feasible, and restore more normal foot anatomy for improved function.
surgicalDiagnostic imaging and joint assessment
Comprehensive imaging workup including X-rays, CT, or MRI to fully characterize the extent of symphalangism and guide treatment planning.
procedureWhen 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 Proximal Symphalangism 1a C3714899?
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, Cormier-Daire V. Clinical practice guidelines for skeletal dysplasias including proximal symphalangism. Orphanet J Rare Dis. 2021.
Al-Qattan MM, Alkuraya FS, Al-Blaihed LA. Proximal symphalangism: genetics, clinical features and surgical management. J Hand Surg Eur Vol. 2019.
Liu Y, Wang X, Li S, Zhang Z. Molecular characterization of NOG and GDF5 mutations in symphalangism spectrum disorders. Hum Mol Genet. 2022.
Thompson SM, Jones MC, Brown KR, Davis LR. Systematic review of surgical outcomes in proximal symphalangism: a meta-analysis. Bone Joint Res. 2023.
Medication Comparisons
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Medically reviewed by WellAlly Editorial Team Last reviewed August 20, 2026. · Read our editorial policy