Long-term outcome of fingertip reconstruction with the homodigital neurovascular island flap.

INTRODUCTION: Fingertip injuries are frequent and several surgical strategies exist to reconstruct the amputated part and restore function and appearance. Yet, long-term results are rarely published. The purpose of this study was to examine the long-term clinical outcome of neurovascular island flaps for traumatic fingertip amputation of Allen type III/IV injuries. MATERIALS AND METHODS: We retrospectively analysed a cohort of patients with traumatic fingertip amputation that underwent reconstruction with a neurovascular island flap from January 2003 to December 2014. No mandatory splinting was applied after surgery. 28 participants (29 fingers) were available for follow-up at mean 8 years after reconstruction. Activities of daily living were measured with the disabilities of the arm, shoulder and hand questionnaire. Grip strength and finger motion were assessed using a Jamar dynamometer and a goniometer. Two-point discrimination and Semmes-Weinstein monofilaments were used to evaluate sensory recovery. RESULTS: No intraoperative complications occurred and all flaps survived. Mean flap size was 4.7 ± 0.6 cm2. Active motion of the fingers was over 95% of the contralateral side at follow-up. Three patients showed mild extension lag of the proximal interphalangeal joint. The grip strength of the affected hand and of each of the affected fingers was over 70% of the contralateral side. In comparison to the contralateral side we did not detect any significant difference for the Semmes-Weinstein monofilament test, but two-point discrimination (5.1 ± 1.7 mm) was significantly impaired. According to the Lim classification 1 of 14 nails with hook nail deformity showed grade 3 breaking of the nail. The DASH score was 16.0. All patients returned to their original occupation and patient satisfaction with the procedure was high. CONCLUSIONS: The risk for disabling flexion contracture seems to be small even without mandatory splinting. Neurovascular island flaps for fingertip amputation of Allen type III/IV injuries are a reliable tool in fingertip reconstruction in the long term.

Thumb and first webspace reconstruction in nonsyndromic congenital mitten hand with symbrachydactyly.

INTRODUCTION: Nonsyndromic congenital mitten hand with thumb and index finger syndactyly is rare. Reconstruction of this condition is challenging, requiring repositioning of the thumb and creation of a wide and deep first webspace. The aim of this paper is to describe the characteristics of patients with this condition and also to describe our surgical technique. METHODS: We describe our technique in 16 consecutive children utilizing complete mobilization of the first metacarpal and thumb as an island flap on the neurovascular bundle, with a rotational osteotomy to reposition the thumb in pronation. In addition, a dorsal M flap was used to reconstruct the first webspace. Patients in this series also had varying degrees of symbrachydactyly with hypoplastic or aplastic phalanges of the central digits. RESULTS: There were 9 male and 7 female patients, with a mean age of 24.4 ± 22.4 months at the time of surgery. Mean follow-up was 19.1 ± 18.3 months. All reconstructions healed well. The mean thumb web distance in the affected hands was 4.2 cm (range 3.5 to 5). All reconstructed thumbs had a good opposition. Two children initially had mild hypertrophic scarring, which resolved with pressure gloves. No other complications were observed. CONCLUSION: One-stage reconstruction of the thumb and first webspace can be effectively achieved with our technique of complete mobilization of the thumb unit, rotational osteotomy, and a dorsal interdigitating M flap.

Long-term outcome of a "short" anterograde homodigital neurovascular island flap with a simple or double V-Y plasty.

INTRODUCTION: Anterograde homodigital neurovascular island flaps are very useful for reconstructing proximal fingertip amputations with exposed bone but have the disadvantage of bringing about proximal interphalangeal joint (PIPJ) stiffness. The addition of a single or double V-Y plasty increases mobility without having to extend the dissection beyond the PIPJ. The purpose of this study was to examine the long-term functional outcome of patients who received a "short" anterograde homodigital neurovascular island flap with a single or double V-Y plasty. Our primary hypothesis was that this flap did not induce PIPJ stiffness and our secondary hypothesis was that it preserved good fingertip sensation. MATERIALS AND METHODS: This was a retrospective study of patients operated between August 2017 and February 2019. The inclusion criteria were the following: a fingertip amputation caused by either a crush or laceration injury with exposed bone, treated during the acute phase of the injury or for secondary necrosis (attempted replantation or subtotal amputation) and classified as type II oblique palmar, type III or type IV amputations according to the Allen classification system. The assessment criteria were: joint mobility, sensory evaluation with the two-point discrimination and Semmes-Weinstein monofilament tests, time to healing, postoperative complications, postoperative splinting, duration of work stoppage, perioperative smoking, cold intolerance, touch hypersensitivity, nail deformity and excluded finger. RESULTS: Nine patients (mean age 53.9 years [32-67]) were operated, of which eight long fingers and one thumb. One procedure was complicated by skin flap necrosis. At the mean follow-up of 22.4 months [16-31], the mean mobility for the metacarpophalangeal joint (MCPJ), proximal interphalangeal joint and distal interphalangeal joint (DIPJ) were 92-0-0°, 97.8-1.5-0° and 60.3-6.8-0°, respectively. In comparison to the contralateral side, a significant difference was only detected in the DIPJs. The mean two-point discrimination in the proximal portion of the flaps were 7.1mm on the ulnar side (p<0.05) and 7.6mm on the radial side (p<0.01), while in the distal portion they were 7.3mm (p<0.01) and 7.8mm (p<0.01). The Semmes-Weinstein monofilament test also detected significantly reduced sensation. CONCLUSION: The combination of a "short" anterograde homodigital neurovascular island flap with a single or double V-Y plasty seems to avoid PIPJ stiffening while preserving good fingertip sensation. LEVEL OF EVIDENCE: IV; retrospective study.

Reconstruction of Wassel IV-D radial polydactyly with a boot-shaped neurovascular island flap: A Consecutive series of 91 thumbs.

INTRODUCTION: Reconstruction of Wassel IV-D radial polydactyly is challenging and requires a custom strategy dependent on the relative size and shape of the radial and ulnar duplicates. Herein, we describe a technique using a boot-shaped neurovascular island flap and review our outcomes. METHODS: Ninety-one consecutive patients had reconstruction with a boot-shaped neurovascular island flap. The flap was dissected out from the thumb to be removed. Specific flap modifications were inclusion of the lateral nail fold, Bruner incisions dorsally and volarly to reduce scarring at the interphalangeal (IP) joint and also complete mobilization of the island flap on its pedicle to allow easier inset. A flexor pollicis longus and extensor tendon rebalancing technique was used to correct the deviation of the reconstructed thumb IP joint. RESULTS: All boot-shaped neurovascular island flaps survived with good contour, shape, and symmetry. The average follow-up period was 25 months (range 6-60 months). Using the Japanese Society for Surgery of the Hand (JSSH) score for classification of outcomes, seven cases were classified as excellent and 84 cases as good. The median JSSH score was 18. The median Kapandji score for opposition was 9 (range 8-10). CONCLUSION: Using a boot-shaped neurovascular island flap completely mobilized on its pedicle with a custom strategy for each radial duplicate, good outcomes can be achieved in reconstruction of Wassel IV-D radial polydactyly. LEVEL OF EVIDENCE: Therapeutic Level IV.

The inverted love-heart flap: a new island flap design.

Background: Island flaps are more mobile than local flaps in-continuity and rely on the laxity of the adjacent tissues. We present a new island flap design, called the inverted love-heart flap, used to reconstruct cutaneous defects of the limbs.Methods: A retrospective chart review of patients who underwent inverted love-heart flap reconstruction post excision of a cutaneous malignancy during July 2017 to July 2019 was performed.Results: Seventeen patients underwent 18 inverted love-heart flap reconstructions postexcision of a cutaneous malignancies during the study period. There were no reported cases of partial or total flap necrosis.Conclusion: The inverted love-heart flap offers a reliable reconstruction for cutaneous defects. It has the advantage of a primary donor site closure, minimal patient morbidity and avoids the need for skin grafting and postoperative immobilization.

[Surgical flap according to Littler (neurovascular island flap)]. / Lappenplastik nach Littler (neurovaskulärer Insellappen).

OBJECTIVE: Defect coverage of medium-sized soft tissue defects on the ulnar side of the thumb and radial side of the index finger. By using the Littler flap, both, the lost soft tissue coverage and sensitivity, which is necessary for an exact grip to the long fingers, can be simultaneously restored. INDICATIONS: Medium-sized soft tissue defect of the ulnar tip of the thumb, exposed bones and parts of the tendons, extensive soft tissue defects with sensory deficit. CONTRAINDICATIONS: Limiting accompanying injuries of the hand. SURGICAL TECHNIQUE: All-layer incision of the flap at ulnar 3rd digit with proximal exploration of the nerve and vascular bundle. Tracing the bundle to the exit from the palmar arch. After subcutaneous tunneling, shift of the flap into the defect. POSTOPERATIVE MANAGEMENT: Immobilization of the thumb in adduction for 7 days in a dorsal plaster splint, followed by free exercise. RESULTS: Reliable defect coverage with low donor-site morbidity and immediate restoration of sensibility in the ulnar tip of the thump. However, microsurgical dissection, especially of the nerve, is challenging.

Maximal advancement of homodigital neurovascular island flaps.

We investigated the maximal advancement of the homodigital neurovascular island flap with the digit in full extension and its correlation to the digital length. In 32 adult cadaveric digits, flaps measuring 1 × 1 cm were sequentially elevated to different dissection points. Dissection of the flap to the proximal interphalangeal joint crease, palmo-digital crease, division of adjacent digital artery and the superficial arch resulted in flap advancement of 8, 12, 15 and 18 mm, respectively. The degree of advancement correlated to the length of the finger and was approximately 19% of the finger length. We conclude that dissection of a homodigital antegrade neurovascular island flap to the proximal interphalangeal joint, palmo-digital crease, after ligation of adjacent digital artery and the superficial arch allows progressively more advancement. The advancement obtained by flap dissection to the palmo-digital crease was about 19% of the finger length.

Treatment of a patient suffering from posttraumatic painful neuromas formed at the bilateral digital nerves of the left middle finger using two neurovascular island flaps.

Hand surgeons often encounter painful posttraumatic neuromas in daily practice and the treatment of these neuromas is still challenging for them, because of the tendency of recurrence.1,2 The patient injured his left middle finger and was treated by amputation in a previous hospital. After this operation, the patient started to feel pain at the fingertip and complained of severe electric radiating pain when the radial and ulnar ends of the finger were touched. We treated painful neuromas formed on both palmar digital nerve stumps using a reverse pedicle island flap containing subcutaneous nerves, which were connected to the nerve stumps after removal of the neuromas of the finger. This maneuver relieved the finger pain completely. Removal of finger digital nerve neuromas, connecting the nerve stumps to the subcutaneous nerves included in a skin island flap and, covering the neurorrhaphy sites with the flap may have reduced the chance of the recurrence of neuromas and resulted in restoration of considerable function of the hand.

Malignant Mixed Tumor of the Finger: A Case Report.

We present a very rare case of malignant chondroid syringoma of the fingertip in a 44-year-old man that was reconstruced by neurovascular island flap after the complete tumor resection of the fingertip. Although it is a rare tumor at an unusual area, it should be included in the differential diagnosis of the finger tumors.

Secondary restoration of fingertip sensation with Littler's heterodigital neurovascular island flap after ring avulsion injury: report of two cases.

Treatment of ring avulsion injuries is technically challenging. Surgical success depends not only on revascularization and anatomic restoration but also on functional recovery. A functional finger is mobile and sensible. We report two cases of secondary restoration of the finger pulp's sensibility with Littler's heterodigital neurovascular island flap after a ring avulsion injury. Two patients (47-year-old physiotherapist and 21-year-old student) suffered a degloving injury of the 4th finger on the left hand, classified in Urbaniak class III and Kay-Adani class IVd. The emergency treatment consisted in replantation with suture repair of the ulnar proper palmar digital artery; the nerve was not repaired due to its avulsion from the pulp. Four months later, once the vascularization was stable, restoration of the fingertip's sensibility was done using Littler's heterodigital neurovascular island flap. The 3rd finger's ulnar palmar digital pedicle was dissected using a hemi-Bruner incision. The pedicled flap was brought to the host site after being tunneled through the 4th finger's base. A split skin graft was performed at the donor site. After three years of follow-up, two-point discrimination on the 4th finger's radial pulp was 5mm and cortical integration was satisfactory. The donor site had only tactile sensitivity. The DASH (Disabilities of the Arm, Shoulder and Hand) score was 13.3 and 11.7, and the total arc of motion was 90° and 180°, respectively. Littler's flap seems to be appropriate for restoring sensation at fingertip after ring avulsion injuries. Donor site complications seem acceptable.