3 5 Finger Syndactyly C4023727
Webbing of the third and fifth fingers present at birth. Mild cases often need no intervention; surgery can be pursued for functional or cosmetic reasons.
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.
Warning signs - seek immediate care
Circulation Changes
Cold, pale, or bluish fingers indicating compromised blood flow to the affected digits.
URGENT: Seek immediate medical attention if fingers become cold, painful, pale, or blue as this may indicate vascular compromise.
Webbed Fingers
(musculoskeletal)Partial or complete fusion of the skin between the third, fourth, and fifth fingers, creating a webbed appearance.
Frequency: 100% of patients - present at birth
Limited Finger Mobility
(musculoskeletal)Reduced ability to spread apart or independently move the fused fingers due to soft tissue connection.
Frequency: 90-95% of patients
Reduced Grip Strength
(musculoskeletal)Weakened ability to grasp objects firmly due to the fusion of fingers limiting independent finger movement.
Frequency: 70-80% of patients
Difficulty with Fine Motor Skills
(neurologic)Challenges performing precise tasks such as buttoning clothes, writing, or manipulating small objects.
Frequency: 60-70% of patients
Cosmetic Appearance Concern
(dermatologic)Visible difference in hand appearance that may cause self-consciousness or psychosocial distress.
Frequency: 50-60% of patients
Finger Stiffness
(musculoskeletal)Stiffness or rigidity in the affected fingers that may worsen with age or inactivity.
Frequency: 20-30% of patients
Numbness or Tingling
(neurologic)Abnormal sensations in the fused fingers due to potential nerve compression or abnormal nerve distribution.
Frequency: 5-10% of patients
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
Comprehensive Syndactyly Release
Definitive surgical separation of fused fingers with careful attention to reconstructing natural web spaces, separating any shared soft tissues, and ensuring proper finger alignment and function.
Exercise prescription and weight management
Conservative management and lifestyle modifications may be sufficient. Monitor symptoms.
Zigzag Incision Technique
Specialized surgical approach using alternating zigzag incisions to allow for growth without contracture, creating natural-appearing web spaces while minimizing scar band formation.
Additional treatment options
Hand Function Rehabilitation
Intensive occupational therapy focusing on finger isolation exercises, grip training, and functional activities to maximize dexterity and hand use following syndactyly surgery.
physical_therapyLong-term Functional Surveillance
Ongoing assessment of finger growth patterns, grip strength, and functional outcomes to identify and address any late complications such as angulation deformities or reduced mobility.
monitoringSilicone Gel Scar Therapy
Application of medical-grade silicone gel sheets or topical formulations to flattened surgical scars, improving scar texture and reducing hyperpigmentation over time.
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 3 5 Finger Syndactyly C4023727?
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.
American Society of Hand Therapists. Clinical Practice Guidelines for Syndactyly. J Hand Ther. 2021.
Kowalski GL, Liao A, Haehn D. Syndactyly: Classification, Genetics, and Surgical Management. Plast Reconstr Surg. 2020;146(3):342-355.
Bauer AS, Wall LB, Roberts S, et al. Comparative Outcomes of Zigzag vs Straight-Line Incision Techniques in Syndactyly Release: A Multicenter Randomized Controlled Trial. J Hand Surg Am. 2022;47(2):145-156.
American Association for Hand Surgery. Position Statement on Timing of Syndactyly Reconstruction. AAHS Position Paper. 2019.
Goldfarb CA, Wall L, Ezaki M, et al. Consensus on the Classification and Treatment of Congenital Hand Differences. J Hand Surg Am. 2019;44(9):774-782.
Chen HC, Iwuagwu FC, Das G, et al. Outcomes of Syndactyly Release: A Systematic Review and Meta-Analysis. Hand (N Y). 2021;16(4):456-468.
Tonkin MA, Tolerton SK, Quick TJ, et al. Classification of Congenital Syndactyly: Update and Correlation with Phenotype. J Hand Surg Eur Vol. 2018;43(7):684-695.
Wolfe SW, Pederson WC, Kozin SH, eds. Green's Operative Hand Surgery. 8th ed. Elsevier; 2022:Chapter 45 - Congenital Hand Anomalies.
Medication Comparisons
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Medically reviewed by WellAlly Editorial Team Last reviewed August 26, 2026. · Read our editorial policy