[Emmert's plastic surgery]. / Emmert-Plastik.

OBJECTIVE: The aim of the surgical intervention is the elimination of infections, ulceration and pain caused by ingrown nails (unguis incarnatus). INDICATIONS: A surgical intervention is recommended for ingrown nails (the large toenail is most frequently affected) in stage III and higher (according to the Mozena classification) as well as in cases of nail plate defects and recurrences. CONTRAINDICATIONS: In cases where a disturbance of wound healing is expected and general contraindications for surgery. SURGICAL TECHNIQUE: The surgical approach incorporates a half-moon-shaped skin incision and a straight longitudinal nail incision. Both incisions extend to the bone. A wedge-shaped piece of tissue is removed and after thorough curettage and rinsing the wound is closed using transungual single-button sutures. POSTOPERATIVE MANAGEMENT: Regular changes of wound dressing, relief of the affected ray by immobilization during wound healing. An antibiotic therapy is only indicated in selected cases. RESULTS: Between 1 January 2013 and 1 January 2023 a total of 50 Emmert's plastic surgery operations (15 women and 35 men) were performed at the Klinikum Vest, Knappschaftskrankenhaus Recklinghausen. The average age of the patients was 50.6 years. The mean follow-up time was 63 months. The outcome and satisfaction of the patients were evaluated according to the self-reported foot and ankle score (SEFAS). The total point count (median value) of the evaluated SEFAS score was 44.

Winograd Wedge Resection Matrixectomy versus Partial Nail Avulsion with Chemical Cautery: A Tertiary Institution's Clinical Outcomes and Proposed Triaging Protocol.

BACKGROUND: Onychocryptosis, or ingrown toenail, is a common condition affecting patients of varying age groups, although usually, younger patients are affected. METHODS: We compared two techniques used in our institution: Winograd wedge resection with matrixectomy (WG-M) versus partial nail avulsion with phenolization of the nail matrix (PNA-P). RESULTS: Primary outcomes of interest were presence of nail regrowth and patient satisfaction postoperatively. Secondary outcomes were postoperative pain (within the first 2 weeks and after 2 weeks), postoperative inflammation, and healing time. A total of 65 patients were included in this study: 44 patients (19 female and 25 male patients), with a mean age of 45.7 years (range, 16-83 years) underwent WG-M in the orthopedic surgery department, whereas a total of 21 patients (10 female and 11 male patients), with a mean age of 44.5 years (range, 13 to 75 years) underwent PNA-P in the podiatry department. In patients who underwent WG-M, there was one case of regrowth (2.3%) compared with no regrowth cases (0%) in the PNA-P group. There was no significant difference in regrowth rate between the two procedures (P = .494). The satisfaction rate was high for both procedures: 100% patients in the WG-M group rated themselves better than before surgery, compared with 95.7% in the PNA-P group. CONCLUSIONS: From our study, we conclude that both techniques (WG-M and PNA-P) are able to achieve similar clinical outcomes, with the PNA-P procedure being less invasive and less resource intensive, and also achieving a shorter healing time.

Assessment of Ingrown Toenails Treated with Nail Fold Cryotherapy in Adolescent Patients: An Observational Pilot Study.

BACKGROUND: Cryotherapy reduces pain by making some reversible functional changes in peripheral nerves. It has also been reported to have a positive effect on the regression of inflammation and granulation tissue. Few studies have evaluated the efficacy and safety of nail fold cryotherapy in ingrown toenails (IGTN) in adults, and there are no studies in the pediatric population. We aimed to evaluate the clinical efficacy of cryotherapy applied to the nail fold in juvenile IGTN. METHODS: This study was conducted in adolescent patients aged 12 to 16 years with unilateral juvenile IGTN. Liquid nitrogen was sprayed into the nail fold for 10 to 15 seconds with a double freeze-thaw cycle. The effectiveness of cryotherapy was interpreted by the clinician's decision, the improvement in visual analogue scale score, Children's Dermatology Life Quality Index score, and granulation tissue. RESULTS: According to the physician, good efficacy was achieved in 91.7% of patients (n = 22 of 24). We found that 54.5% of them (n = 12 of 22) were still in remission after 6 months. Rates of complete regression in granulation tissue were pronouncedly less in sizes larger than 5 mm (≤5 mm, 55.6%; >5 mm, 16.7%). However, adequate symptomatic relief was observed in 83.3% of stage 3 patients, even if complete granulation tissue response was not achieved yet. Significant improvements in visual analogue scale and the Children's Dermatology Life Quality Index scores were observed after cryotherapy (P < .05). CONCLUSIONS: Nail fold cryotherapy is a useful alternative among conservative methods because of its rapid and high efficiency (91.7%), especially in mild to moderate cases, despite the high recurrence rates (45.5%) in juvenile IGTN.

Ingrown Toenails: A Survey Among Dermatologists on Current Treatments.

BACKGROUND: To date, there is no formal consensus on how to treat ingrown toenails. Despite the risk of causing irreparable damage to the nail, highly invasive procedures are still common. Less-invasive, matrix-directed techniques with shorter downtime and high cure rates exist, but, perhaps because of a lack of awareness, appear not to have been universally adopted. OBJECTIVE: The authors' study sought to generate data on common practices in the treatment of ingrown toenails. MATERIALS AND METHODS: The authors developed and conducted an online survey to ask dermatologists/dermatosurgeons how they would proceed in 9 different cases of ingrown toenails based on photographs. RESULTS: The authors received 154 replies. Nonsurgical interventions, including advice on nail care/foot baths/ointments/wraps/padding, were always the most frequently chosen option. Removal of the lateral nail plate followed by chemical partial matricectomy (phenolization) was the most or second-most frequently chosen surgical intervention. The answers were highly heterogeneous, and there was no unanimity based on morphology alone. CONCLUSION: Except for a preference for nonsurgical interventions, the authors could not identify any clear treatment standards. The heterogeneity of treatment approaches suggests the need for a guideline.

Surgical interventions for ingrown toenail.

BACKGROUND: Paronychia is a prevalent clinical disease affecting the soft tissue surrounding the nails. Most cases of toenail paronychia are commonly associated with ingrown toenails. While conservative treatment is effective for mild cases of ingrown toenails, surgical intervention becomes necessary for moderate to severe cases, particularly when granulomas form. OBJECTIVE: To provide a systematic understanding of these classic and modified procedures for surgeons to select the appropriate surgical interventions for patients suffering from moderate to severe ingrown toenails and discuss this technology's advantages and limitations for dermatologic surgery. METHODS: A literature search was performed using PubMed/MEDLINE and Google Scholar databases. Studies discussing surgical intervention for ingrown toenails were included. Moreover, the surgical steps were meticulously depicted by detailed schematic diagrams. RESULTS: These surgical techniques can be divided into three categories: matrix resection, debulking of periungual soft tissues, and the rotational flap technique. Each approach possesses distinct advantages and limitations. CONCLUSION: For moderate to severe cases, surgical interventions may exhibit superior outcomes, faster recovery times, and lower recurrence rates. The surgeon must possess a comprehensive understanding and proficient skillset in various surgical techniques for ingrown toenails.

Huge hypertrophic scar secondary to chronic ingrown toe nail mimicking tumor: A case report.

RATIONALE: A huge hypertrophic scar formation secondary to chronic ingrown toe nail mimicking tumor is a rare disease. It is not only causing concerns cosmetically, but also hindering normal daily activities physically and socially. In this paper, we present an unusual case of bilateral ingrown nails with different phases. One resulted in a large hypertrophic scar caused by stimulation from secondary to chronic ingrown nail. PATIENT CONCERNS AND DIAGNOSIS: A 44-year-old man with a huge mass (7 × 4 × 8.5 cm) in his right great toe and inflamed ingrown nail in his left great toe visited the clinic. The mass in the right toe showed an irregular and bizarre shape with a stellate ulcer (2 × 2 cm) at the distal end. After removing an ingrown nail 3 years ago with minor repetitive trauma, self-managed wound has grown into a tumor-like mass, resulting in intolerable discomfort. In gross appearance, a stalk appeared to originate from the lateral side of the nail bed with the ingrown nail in the great toe showing inflamed medial and lateral gutter and causing redness and tenderness. Huge hypertrophic scar formation secondary to chronic ingrown toe nail mimicking tumor is a rare disease that is not only causing a cosmetic concern, but also hindering normal daily activities physically and socially. INTERVENTION AND OUTCOMES: Excisional biopsy was performed for both great toes. Biopsy confirmed chronic ulcerative inflammation with a hypertrophic scar. The resection site healed and persisted well at 12 months after surgery. CONCLUSION: Our unusual case suggests that the natural course of an untreated ingrown toe nail may result in hypertrophic scar extending far to mimic tumorous conditions.

A systematic review and meta-analysis of randomised controlled trials of surgical treatments for ingrown toenails part II: healing time, post-operative complications, pain, and participant satisfaction.

BACKGROUND: When performing nail surgery, clinicians must choose from a multitude of procedures and variations within each procedure. Much has been published to guide this decision making, but there are a lack of up to date robust systematic reviews to assess the totality of this evidence. METHODS: Five databases (MEDLINE, Embase, CINAHL, Web of Science and CENTRAL) and two registers (Clinicaltrials.gov and ISRCTN) were searched to January 2022 for randomised trials evaluating the effects of a surgical intervention(s) for ingrown toenails. Two independent reviewers screened records, extracted data, assessed risk of bias and certainty of evidence. Data on co-primary outcomes of symptom relief and symptomatic regrowth were presented in our first paper. This paper presents data for the secondary outcomes and further discussion. RESULTS: Of 3,928 records identified, 36 randomised trials were included in the systematic review. Healing time appears to be reduced with shorter application of phenol. A reduced healing time was also apparent was with the addition of curettage, although this may also increase the risk of post-operative bleeding and pain. Post operative bleeding was also reportedly lower in people who received local anaesthetic with epinephrine but no tourniquet. Use of phenol with nail bed excision may decrease the risk of infection. Lower pain scores were reported when using partial matrixectomy and surgical interventions with phenol. Shorter duration of pain was reported with phenolisation and wedge resection. Participant satisfaction was high overall. CONCLUSION: This second paper reports secondary outcomes from a robust systematic review of randomised trials on surgical treatment of ingrown toenails. Despite the large volume of clinical trials conducted on the topic, few clinical conclusions can be drawn due to the poor quality of these studies. Further high-quality clinical trials are needed to answer fundamental questions in the surgical treatment of ingrown toenails.

A Subungual Nevoid Melanoma of the Right Hallux from a 65-Year-Old Man: A Case Report.

Nevoid melanoma (NeM) is a rare variant of malignant melanoma characterized by slight cellular atypia, polymorphism, and incomplete maturation. It most frequently occurs on the trunk and arms but rarely on the foot. Here, we report a subungual NeM of the right hallux. A 65-year-old man presented with severe pain of 6 months' duration to his right great toe following self-treatment for an ingrown nail. He was evaluated and treated with debridement of the toenail at an urgent medical center 3 months prior. However, this had not relieved his pain. The patient also noticed discoloration of his distal great toe over the past 3 months. Removal of part of the ingrown nail revealed a pigmented mass extending distally from the matrix. Surgical excision of the mass was performed because of the concern for malignancy. The diagnosis of NeM was based on histologic analysis along with enhanced diagnostic modalities. The patient was further treated with surgical amputation of the great toe and anti-programmed cell death-1 therapy. The patient had no relapse at 1-year follow-up. Nevoid melanoma is a rare variant of malignant melanoma on the toes, which needs to be differentiated from a nevus with atypia, with a variety of modalities including cellular and molecular profiling. The optimal treatment is amputation.

A systematic review and meta-analysis of randomised controlled trials on surgical treatments for ingrown toenails part I: recurrence and relief of symptoms.

BACKGROUND: Ingrown toenails are a common nail pathology. When conservative treatments are ineffective, a surgical approach is often utilised. Despite recent narrative reviews, there is a need for an up-to-date and rigorous systematic review of surgical methods for treating ingrown toenails. METHODS: Five databases (MEDLINE, Embase, CINAHL, Web of Science and CENTRAL) and two registers (Clinicaltrials.gov and ISRCTN) were searched to January 2022 for randomised trials evaluating the effects of a surgical intervention(s) for ingrown toenails with a follow-up of at least 1 month. Two independent reviewers screened records, extracted data, assessed risk of bias and certainty of evidence. RESULTS: Of 3,928 records identified, 36 (3,756 participants; 62.7% males) surgical interventions were included in the systematic review and 31 studies in the meta-analysis. There was very low quality evidence that using phenol with nail avulsion vs nail avulsion without phenol reduces the risk of recurrence (risk ratio [RR] 0.13 [95% CI 0.06 to 0.27], p < 0.001). No favourable effect was observed between chemical or surgical vs conservative management (0.55 [0.19 to 1.61], p = 0.280; 0.72 [0.33 to 1.56], p = 0.410), chemical or surgical vs other (e.g., CO2 laser, electrocautery) (1.61 [0.88 to 2.95], p = 0.120; 0.58 [0.25 to 1.37], p = 0.220), chemical vs surgical (0.75 [0.46 to 1.21], p = 0.230), surgical vs surgical (0.42 [0.21 to 0.85]), chemical vs chemical (0.19 [0.01 to 3.80], p = 0.280), surgical vs surgical + chemical (3.68 [0.20 to 67.35], p = 0.380), chemical vs surgical + chemical (1.92 [0.06 to 62.30], p = 0.710), local anaesthetic vs local anaesthetic + adrenaline (1.03 [0.22 to 4.86], p = 0.970), chemical timings 30 s vs 60 s (2.00 [0.19 to 21.41]) or antibiotics vs no antibiotics (0.54 [0.12 to 2.52], p = 0.430). Central toenail resection was the only procedure to significantly relieve symptoms (p = 0.001) but data were only available up to 8 weeks post-surgery. CONCLUSION: Despite the high number of publications, the quality of research was poor and the conclusions that can be inferred from existing trials is limited. Phenolisation of the nail matrix appears to reduce the risk of recurrence following nail ablation, and with less certainty 1 min appears to be the optimum time for application. Despite this being a widely performed procedure there remains a lack of good quality evidence to guide practice.

A novel cosmetic approach for partial matricectomy in treating ingrown toenails.

BACKGROUND: Toenails play a great part in protecting toes and peripheral soft tissues, simultaneously playing a cosmetic role. The ideal treatment should result in a functional and aesthetic outcome. OBJECTIVE: To describe a novel, aesthetic and minimally invasive method to treat ingrown toenail. METHODS: We retrospectively analyzed 436 lesions of 395 ingrown toes in 353 patients with a mean age of 26.0 ± 13.4 (range 10-55) from June 2014 to March 2020 in our department. A novel cosmetic approach for partial matricectomy in treating ingrown toenails was undergone. The average follow-up time was 27.5 ± 2.8 months. The average period prior to work resumption, recurrence rate, and infection rate were measured. Mean pain Visual Analogue Scale (VAS) and Mean satisfaction VAS were used to evaluate the foot appearance. RESULTS: The average period prior work resumption was 2.2 ± 2.1 days (range, 0-7 days). The recurrence rate was 1.6% (7 lesions in 6 patients) at more than 2 years of follow-up. There was no critical complication except infection (0.46%). Mean pain VAS reduced from a preoperative score of 7.7 ± 1.5 points (range, 6-10 points) to a postoperative 3-day score of 2.2 ± 1.0 points (range, 1-4 points; p < 0.001) while Mean satisfaction VAS improved from 1.5 ± 1.3 points (range, 0-3 points) to 9.2 ± 0.6 points (range, 8-10 points; p < 0.001). CONCLUSION: Our proposed approach is minimally invasive relative to conventional methods, which can achieve comparable efficacy to treat ingrown toenails with granulation tissue. Therefore, it can serve as another option to treat this specific type of ingrown toenails.

[Conservative treatment options for unguis incarnatus]. / Conservatieve behandelopties bij unguis incarnatus.

Unguis incarnatus (ingrown toenail) is a common problem in daily practice. Persons with unguis incarnatus stage two and three are often referred for surgical partial nail excision, however conservative treatment or minimal-invasive alternatives exist. In the latest Dutch guideline for ingrown toenails, there is minimal attention to these alternatives. A podiatrist can do a spiculectomy and places a bilateral orthonyxia (nail brace) or tamponnade afterwards. This treatment option was studied in a prospective cohort study in 88 persons with high risk for wound healing problems and was found to be a safe and effective treatment option. In this clinical lesson we discuss three casus and their treatment options including minimal-invasive treatments. Guidance of the nail growth needs more attention after procedures just like adequate nail clipping advices to prevent for recurrences. Both are not announced in the latest Dutch guideline.

High-frequency ultrasonography index in evaluation of pincer nail.

BACKGROUND: The measurements of width index, height index, and curvature index were used for assessment of the curvature severity. Nevertheless, both sides of the nail root are buried subcutaneously, impossibility in measuring the width index correctly. MATERIALS AND METHODS: We developed a technique to measure the index under high-frequency ultrasonography (HF-USG). RESULTS: There was good agreement between the HF-USG index and the result examined after surgery. CONCLUSION: The observation on HF-USG helps to distinguish between ingrown nail and pincer nail. The HF-USG index will be useful in the examination and measurement of nail roots buried subcutaneously or nail penetration under the hypertrophic lateral nail fold, and comparing the effectiveness among treatments for pincer nail objectively.

A novel modified Winograd surgical tricks and tips with a "bird flap" for the treatment of ingrown toenails.

BACKGROUND: The Winograd technique is the most commonly used surgical treatment for ingrown toenails. We describe a novel modified approach, more effective and simpler to perform with a better cosmetic outcome. METHODS: We retrospectively included 45 and 39 patients with 67 and 58 ingrown toenails who underwent our modified Winograd technique and the Winograd technique, respectively, from July 2017 to June 2020, and obtained data after 3, 6, and 12 months of follow-up. RESULTS: No significant differences in the postoperative time taken to return to regular activities in the modified Winograd and traditional Winograd groups (p = 0.103) and regarding the recurrence in both groups (p = 0.055) were found. The extent of proximal germinal matrix exposure with the modified Winograd technique was significantly more clearly revealed than in the traditional Winograd method contextually (p < 0.05). The postoperative appearance satisfaction rate was significantly higher in the modified Winograd group than in the traditional Winograd group (p = 0.029). CONCLUSION: The modified Winograd technique is effective in treating ingrown toenails.

Surgical Matricectomy Versus Phenolization in the Treatment of Ingrown Toenails: A Randomized Controlled Trial.

BACKGROUND: Treatment of ingrown toenail includes various nonsurgical and surgical treatments. However, there is no consensus on the ideal first-choice treatment. OBJECTIVE: To compare phenolization versus surgical matricectomy (SM) after lateral nail plate avulsion in terms of efficacy, recurrence rates, postoperative outcomes, and cosmesis. METHODS: The authors enrolled 45 consenting patients and randomized them into 2 groups (Group 1 = phenolization and Group 2 = SM) using stratified block randomization and followed them up at 1 week, 1 month, and 6 months. RESULTS: The median percentage improvement in pain visual analog scale (VAS) score was comparable between the 2 groups ( p = 0.793). The mean photo VAS showed significant improvement in Group 1 at 1 week ( p = 0.00) and 1 month ( p = 0.02) but not at 6 months ( p = 0.44). The median number of days for pain relief ( p = 0.169), for healing ( p = 0.192), and for resuming work ( p = 0.136) were not significantly different between the 2 groups. The time required to regain normal morphology was significantly longer in Group 2 ( p = 0.006). None of the patients in either group presented with recurrence at 6 months and 1 year. The authors observed failure of treatment in 1 patient in Group 2. CONCLUSION: Both procedures were equally efficacious, had minimal complications, and showed no recurrence at 6 months and 1 year.

Effectiveness of hyaluronic acid in post-surgical cures following partial matricectomies with the phenol/alcohol technique: A randomized clinical trial.

BACKGROUND: Post-operative cures with hyaluronic acid (HA) could potentially shorten the period recovery involved in the phenol technique for ingrown toenail. The aim of this study was therefore to compare a standard healing protocol with the experimental one based on hyaluronic acid cream. MATERIAL AND METHODS: 70 patients who had undergone phenol technique surgery for ingrown toenail were divided into two groups - control (n = 35) who received post-operative cures following the standard protocol with povidone iodine gel, and experimental (n = 35) who received cures with HA in the first 3 visits. Bleeding, total healing time, and perceived pain were assessed. RESULTS: Patients in the control group recovered from the intervention in a total of 26.17 ± 7.75 days, while those in the HA group recovered in a significantly shorter time - 22.42 ± 2.41 days (p = 0.007, effect size 0.653). However, there were no between-group statistical differences in bleeding or perceived pain over the course of the post-surgery visits. CONCLUSIONS: The use of low molecular weight hyaluronic acid is effective in reducing the phenol-technique healing time by 4 days compared with the standard cure. However, no extra effects such as reductions in bleeding or perceived pain can be expected in choosing this healing protocol.

Matrix Cauterization With Silver Nitrate in the Treatment of Ingrown Toenails in Children: Pilot Study / Cauterización de la matriz con nitrato de plata para el tratamiento de las uñas encarnadas en los dedos de los pies en niños: estudio piloto

Background Although partial onychectomy with chemical matricectomy has been described as the treatment of choice, there is sparse evidence in the literature regarding the use of silver nitrate for matricectomy. Our aim is to describe the effectiveness of silver nitrate for matrix cauterization after partial onychectomy. Methods A prospective observational study was performed on patients with ingrown toenails stage 2–3 who underwent partial onychectomy with silver nitrate chemical matricectomy during 2018–2019 in our institution. All patients were evaluated in the outpatient clinic on the 7th and 30th post-operative day and a telephone evaluation was performed every 6 months after the surgical procedure to date. Results One hundred and twenty-three patients, who underwent 231 partial onychectomies with silver nitrate chemical matricectomy were included, with a median follow-up of 21 months (interquartile range, 12–29). The procedure had an effectiveness of 95.3%, with only 11 recurrences (4.7%) reported so far on follow-up. Postoperative infections were observed in 4 patients (1.7%). Adverse effects, such as pain and postoperative drainage, were irrelevant in most patients. Conclusions Silver nitrate matricectomy after partial onychectomy is an effective and safe alternative for the treatment of ingrown toenail in children, with scarce postoperative morbidity and low recurrence rate (AU)

Antecedentes Aunque la onicectomía parcial con matricectomía química ha sido descrita como tratamiento de elección en los casos de uñas encarnadas en los dedos de los pies, existe escasa evidencia en la literatura en cuanto al uso de nitrato de plata para matricectomía. Nuestro objetivo es describir la efectividad del nitrato de plata para cauterización de la matriz tras onicectomía parcial. Métodos Se realizó un estudio observacional prospectivo en pacientes con uñas encarnadas en los dedos de los pies estadio 2-3, sometidos a onicectomía parcial con matricectomía con nitrato de plata durante los años 2018 y 2019 en nuestra institución. Se evaluó a todos los pacientes en la clínica ambulatoria el 7.° y 30.° días postoperatorios, realizándose una evaluación telefónica cada 6 meses, a contar desde la fecha de la intervención quirúrgica. Resultados Se incluyó a 123 pacientes, a quienes se realizaron 231 onicectomías parciales con matricectomía química con nitrato de plata, con un seguimiento medio de 21 meses (rango intercuartílico: 12-29). El procedimiento tuvo una efectividad del 95,3%, con solo 11 recidivas (4,7%) reportadas hasta el seguimiento. Se observaron infecciones postoperatorias en 4 pacientes (1,7%). Los efectos adversos, tales como dolor y el flujo postoperatorio, fueron irrelevantes en muchos pacientes. Conclusiones La matricectomía con nitrato de plata tras onicectomía parcial es una alternativa efectiva y segura para el tratamiento de las uñas encarnadas en niños, con escasa morbilidad postoperatoria y baja tasa de recidiva (AU)

[Artículo traducido] Cauterización de la matriz con nitrato de plata para el tratamiento de las uñas encarnadas en los dedos de los pies en niños: estudio piloto / Matrix Cauterization With Silver Nitrate in the Treatment of Ingrown Toenails in Children: Pilot Study

Antecedentes Aunque la onicectomía parcial con matricectomía química ha sido descrita como tratamiento de elección en los casos de uñas encarnadas en los dedos de los pies, existe escasa evidencia en la literatura en cuanto al uso de nitrato de plata para matricectomía. Nuestro objetivo es describir la efectividad del nitrato de plata para cauterización de la matriz tras onicectomía parcial. Métodos Se realizó un estudio observacional prospectivo en pacientes con uñas encarnadas en los dedos de los pies estadio 2-3, sometidos a onicectomía parcial con matricectomía con nitrato de plata durante los años 2018 y 2019 en nuestra institución. Se evaluó a todos los pacientes en la clínica ambulatoria el 7.° y 30.° días postoperatorios, realizándose una evaluación telefónica cada 6 meses, a contar desde la fecha de la intervención quirúrgica. Resultados Se incluyó a 123 pacientes, a quienes se realizaron 231 onicectomías parciales con matricectomía química con nitrato de plata, con un seguimiento medio de 21 meses (rango intercuartílico: 12-29). El procedimiento tuvo una efectividad del 95,3%, con solo 11 recidivas (4,7%) reportadas hasta el seguimiento. Se observaron infecciones postoperatorias en 4 pacientes (1,7%). Los efectos adversos, tales como dolor y el flujo postoperatorio, fueron irrelevantes en muchos pacientes. Conclusiones La matricectomía con nitrato de plata tras onicectomía parcial es una alternativa efectiva y segura para el tratamiento de las uñas encarnadas en niños, con escasa morbilidad postoperatoria y baja tasa de recidiva (AU)

Background Although partial onychectomy with chemical matricectomy has been described as the treatment of choice, there is sparse evidence in the literature regarding the use of silver nitrate for matricectomy. Our aim is to describe the effectiveness of silver nitrate for matrix cauterization after partial onychectomy. Methods A prospective observational study was performed on patients with ingrown toenails stage 2–3 who underwent partial onychectomy with silver nitrate chemical matricectomy during 2018–2019 in our institution. All patients were evaluated in the outpatient clinic on the 7th and 30th post-operative day and a telephone evaluation was performed every 6 months after the surgical procedure to date. Results One hundred and twenty-three patients, who underwent 231 partial onychectomies with silver nitrate chemical matricectomy were included, with a median follow-up of 21 months (interquartile range, 12–29). The procedure had an effectiveness of 95.3%, with only 11 recurrences (4.7%) reported so far on follow-up. Postoperative infections were observed in 4 patients (1.7%). Adverse effects, such as pain and postoperative drainage, were irrelevant in most patients. Conclusions Silver nitrate matricectomy after partial onychectomy is an effective and safe alternative for the treatment of ingrown toenail in children, with scarce postoperative morbidity and low recurrence rate (AU)