Reconstruction of the thumb interphalangeal joint from the second toe proximal interphalangeal joint combined with artificial dermis covering: A case report.

RATIONALE: Thumb function is one of the most fundamental components of hand function, and a vast majority of hand functions are derived from thumb motion. Injury of the thumb interphalangeal joint has a tremendous impact on the function of the thumb, and damage to the thumb interphalangeal joint (IPJ) caused by trauma is usually accompanied by dislocation of the surrounding skin; therefore, it is particularly important to restore the thumb anatomy and skin coverage. PATIENT CONCERNS: A 41-year-old woman presented with IPJ disfigurement accompanied by a local skin defect caused by machine compression of her right thumb. Restoring the appearance and function of the thumb is key to this operation. DIAGNOSES: Open fracture of the right thumb. INTERVENTIONS: After detailed preoperative and radiographic evaluation, the appearance and function of the thumb were reconstructed by IPJ grafting and artificial dermis covering. OUTCOMES: At 4 months' follow-up, the patient's visual analogue score was 0, no complications (eg, osteomyelitis, osteolysis, osteoarthritis, and nonunion of the artificial dermis) were observed, and the range of motion of the thumb IPJ returned to 60% of that of the healthy side. LESSONS: The innovative application of the second toe proximal IPJ flap combined with double-layer artificial dermis covering to reconstruct the thumb IPJ defect not only solves the problem of skin defects in the recipient area after transplantation in previous cases but also restores the beauty of the recipient area, making it easier for patients to accept this surgical program.

Reconstruction of a nail bed with double-layer artificial dermis for a pincer nail: A case report and literature review.

Background: A pincer nail (PN) is a type of nail deformity. Although it is a minor ailment, it can cause intractable pain, affecting daily work and life. Currently, there is no standard invention for PN. The main purpose of treatment is to correct the curvature of the nail, so we apply double-layer artificial dermis (DLAD), a novel treatment, for PN according to this aim. Case presentation: A 40-year-old man suffering from PN was treated with DLAD. After 1 year of follow-up, the patient's great toenail plate of the right foot was completely grown out. His pain was relieved, and the curvature of the toenail was corrected. Conclusion: The innovative method of using DLAD to fill the ingrown nail bed not only solves the problem of recurrent pincer nail deformity but also restores the original appearance of the toenail. It suggested that this simple procedure can be widely applied in clinical practice.