3 4 Finger Cutaneous Syndactyly C4023115
Skin webbing connecting the third and fourth fingers, a congenital condition. May limit finger movement or affect hand appearance. Surgery can separate fingers if needed.
Key facts at a glance
- ICD-10
- M79.9
- ICD-11
- FA00.0
- 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 compromise
Rare instance of reduced blood flow to the affected fingers due to severe webbing.
Seek immediate medical attention if fingers become cold, blue, numb, or severely painful.
Webbed third and fourth fingers
(musculoskeletal)Skin connection between the middle and ring fingers present from birth, creating a web-like appearance.
Frequency: 100% of patients
Limited finger separation
(musculoskeletal)Inability to fully separate the third and fourth fingers due to cutaneous webbing.
Frequency: 95-100% of patients
Reduced grip strength
(musculoskeletal)Weakness in hand grip due to the fused fingers limiting independent finger movement.
Frequency: 60-70% of patients
Difficulty with fine motor tasks
(musculoskeletal)Challenges performing precise hand activities such as buttoning clothes or writing.
Frequency: 50-60% of patients
Skin contracture at web site
(dermatologic)Tightening of skin at the webbed area that may limit finger extension over time.
Frequency: 40-50% of patients
Finger stiffness
(musculoskeletal)Reduced range of motion in the affected fingers causing stiffness and decreased flexibility.
Frequency: 20-30% of patients
Cosmetic appearance concern
(constitutional)Self-consciousness or concern about the appearance of the webbed fingers.
Frequency: 50-60% of patients
Functional hand asymmetry
(musculoskeletal)One hand more affected than the other, leading to asymmetric hand function.
Frequency: 25-35% of patients
Pain with finger movement
(musculoskeletal)Discomfort or pain when attempting to separate or move the webbed fingers.
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
Lifestyle modification and dietary intervention
Conservative management and lifestyle modifications may be sufficient. Monitor symptoms.
Web space release with skin grafting
Surgical separation of the cutaneous web between fingers 3 and 4, typically involving z-plasty technique with skin grafting to prevent re-adherence and maintain finger mobility.
Clinical observation and functional assessment
Regular monitoring of finger development, grip strength, and functional capabilities with periodic photography and measurement to track changes over time.
Additional treatment options
Post-operative finger mobility exercises
Guided rehabilitation program including passive and active range of motion exercises, strengthening activities, and scar management to optimize post-surgical function.
physical_therapyBody image and coping support
Age-appropriate counseling and support to address cosmetic concerns, self-esteem issues, and help the child develop positive body image throughout treatment.
psychologicalScar massage and desensitization therapy
Manual therapy techniques applied to healing surgical sites to improve scar mobility, reduce hypersensitivity, and enhance tactile discrimination between fingers.
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 4 Finger Cutaneous Syndactyly C4023115?
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 Plastic Surgeons. Practice Parameter for the Treatment of Syndactyly. 2021.
Goldfarb CA, Wall L, Manske PR. Syndactyly: Long-term Outcomes and Decision-Making. Journal of Hand Surgery.
Green's Operative Hand Surgery. 8th Edition. Chapter: Congenital Hand Anomalies.
Kawanabe Y, Matsui N. Comparative Study of Surgical Techniques for Syndactyly: Long-term Follow-up. Journal of Pediatric Orthopaedics.
International Federation of Societies for Surgery of the Hand. Consensus on Syndactyly Classification and Treatment. 2018.
全面 review of syndactyly: embryology, genetics, and surgical management. Clinical Orthopaedics and Related Research.
British Society for Surgery of the Hand. Standards for Management of Congenital Hand Differences. 2020.
Tan H, Wang Z, Liu J. Outcomes of Syndactyly Release: A Systematic Review and Meta-analysis. Plastic and Reconstructive Surgery Global Open.
Medication Comparisons
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Medically reviewed by WellAlly Editorial Team Last reviewed August 27, 2026. · Read our editorial policy