Nerve Transfer for Finger Sensory Reconstruction With Dorsal Branch of the Digital Nerve

Study Overview
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Brief Summary
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A proper digital nerve (PDN) defect causes partial or complete sensory loss of the finger pulp, which results in functional disability.The dorsal branch of the PDN can be transferred for reconstruction of such nerve defects.In this study, the investigators modified the Lesavoy et al' technique and evaluated the efficacy of dorsal sensory branch transfer for PDN defects. For comparison, the investigators collected a consecutive series of 32 patients with finger PDN defects treated using a traditional sural nerve graft from February 2005 to October 2008.

Conditions
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Sensory Restoration of the Reconstructed Finger Pulps, Cold Intolerance of the Reconstructed Finger, Pain of the Reconstructed Finger

Intervention / Treatment
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* Procedure: Nerve transfer


Participation Criteria
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Eligibility Criteria
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Inclusion Criteria: Finger PDN defects proximal to the proximal interphalangeal joint Single or two PDN defects PDN defects longer than 1 cm. Exclusion Criteria: PDN defects less than 1 cm Concomitant injuries to the multiple dorsal sensory branches that preclude their use as nerve donor sites Thumb PDN defects.

Ages Eligible for Study
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Minimum Age: 15 Years
Maximum Age: 50 Years

Sexes Eligible for Study
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All

Accepts Healthy Volunteers
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No

Study Plan
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How is the study designed?
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Design Details

Primary Purpose: Treatment
Intervention Model: Single Group Assignment
Masking: None (Open Label)


Arms and Interventions

| Participant Group/Arm | Intervention/Treatment |
| --- | --- |
| Other: Nerve repair<br>the dorsal branch of the proper digital nerve was used as a pedicle nerve for reconstructing PDN defects | Procedure: Nerve transfer<br>* the dorsal branch was used as a pedicle nerve for reconstructing PDN defects<br>* Other names: Local pedicle nerve transfer;|

What is the study measuring?
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Primary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| static 2-point discrimination (2PD) test | At final follow-up, we measured the sensibility of the pulps and the donor sites using the static 2-point discrimination (2PD) test. The test points were at the center of the radial or ulnar portion of the pulp and the donor sites separately. Each area was tested 3 times with a Dellon-Mackinnon discriminator. Two out of 3 correct answers were considered proof of perception before proceeding to another lower value. | 26 months | 

Secondary Outcome Measures

| Outcome Measure | Measure Description | Time Frame |
| --- | --- | --- |
| self-administered Cold Intolerance Severity Score (CISS) questionnaire | The maximum score was 100 and was grouped into 4 ranges (0-25, 26-50, 51-75, and 76-100), corresponding to mild, moderate, severe, and extreme severity, respectively. | 26 months | 

 Terms related to the study
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Keywords Provided by Centre Hospitalier Valida
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defect, dorsal branch of the proper digital nerve, proper digital nerve, nerve transfer, finger sensory reconstruction