Treatment of Morton's neuroma with minimally invasive distal metatarsal metaphyseal osteotomy (DMMO) and percutaneous release of the deep transverse metatarsal ligament (DTML): a case series with minimum two-year follow-up.

BACKGROUND: The optimal treatment of symptomatic Morton's neuroma remains unclear; conservative methods are sometimes ineffective and neurectomy has significant rates of patient dissatisfaction. The aim of this study was to evaluate the outcome of minimally invasive distal metatarsal metaphyseal osteotomy (DMMO) and percutaneous release of the deep transverse metatarsal ligament (DTML) in patients with Morton's neuroma. METHODS: Between January 2018 and November 2019, 27 patients (29 feet) diagnosed with Morton's neuroma after clinical and radiological evaluation underwent DMMO and percutaneous DTML release. The primary clinical outcomes were pain (VAS) and function (AOFAS score). Secondary outcomes included patient satisfaction, complications, and radiographic outcomes. Patients were followed up for a minimum of two years. RESULTS: The median age of the participants was 66 years (range 48-79) and the follow-up time was 28 months (24-47). There was a decrease of 5.7 points in the VAS for pain (p < .001) and an increase of 19.9 in AOFAS (p < .001) after the surgical procedure. There was one case of superficial infection and one patient required resection of the neuroma (neurectomy). The majority of patients (89.7%) were satisfied and considered the procedure outcome as excellent or good. CONCLUSION: Treatment of Morton's neuroma with minimally invasive distal metatarsal metaphyseal osteotomy and percutaneous release of the deep transverse metatarsal ligament showed significant improvement in pain and function with a low incidence of complications and a high rate of personal satisfaction.

Interdigital Commissural Approach for Morton's Neuroma.

BACKGROUND: Morton's neuroma is a frequent cause of metatarsalgia. Operative treatment is indicated if nonoperative management has failed. The objective of the present study was to describe a technique of Morton's neuroma excision by a minimally invasive commissural approach and evaluate the long-term outcome and complications. METHODS: A retrospective study of 108 patients with Morton's neuroma treated surgically with a commissural approach between September 1990 and December 2010 was performed. The surgical technique is described. Clinical outcomes and complications were evaluated. The average follow-up was 121 months. Eleven patients were men and 97 women. The average age was 49.4 years; 56.8% neuromas were at the third space and 43.2% at the second space. Six patients presented 2 neuromas in the same foot, and 9 patients had bilateral neuroma. RESULTS: The visual analog scale (VAS) average pain score was 5.4 points preoperatively and 0.2 points at the final follow-up. The author found a significant difference between the VAS scores preoperatively and postoperatively (P < .01). Excellent and good satisfaction outcomes were achieved in 93.6%. The postoperative complication incidence was 3%. CONCLUSION: The author believes a minimally invasive commissural approach has advantages over a dorsal or plantar incision. It is a simple and reproducible technique, with satisfactory outcomes, low complication rates, and a quick return to usual activities. LEVEL OF EVIDENCE: Level IV, retrospective case series.

Effectiveness of customized insoles in patients with Morton's neuroma: a randomized, controlled, double-blind clinical trial.

OBJECTIVE: To assess the effectiveness of customized insole in patients with Morton's neuroma. DESIGN: Double-blind randomized controlled trial with intent-to-treat analysis. SETTING: Outpatients, University Hospital. SUBJECTS: A total of 72 patients with Morton's neuroma met the inclusion criteria and were randomly allocated to either the study group (n = 36) or the control group (n = 36). INTERVENTIONS: The study group was assigned to use a customized insole with metatarsal and arch support made of ethyl vinyl acetate and the control group received a flat insole of the same material, color, and density. MAIN MEASURES: The primary outcome measure was walking pain intensity measured by the visual analogue scale. The secondary outcomes were as follows: pain at rest, palpation, and paresthesia (visual analogue scale); functional disability (6-minute walk test, Foot Function Index, and Foot Health Status Questionnaire); quality of life (Health Survey Short Form-36 (SF-36)); and foot pressure (AM Cube FootWalk Pro program). RESULTS: In the comparison between the groups over time, a statistically significant difference, with improvement in favor of the experimental group, was found for pain during walking (P = 0.048); in the general health domains (P < 0.001) and physical activity (P = 0.025) of the Foot Health Status Questionnaire; in the general Foot Function Index score (P = 0.012); and in the functional capacity domain of the SF-36 questionnaire (P = 0.046). For the other parameters, no difference was found between groups. CONCLUSION: The study demonstrated that customized insole with metatarsal and arch support relieved walking pain and improved patient-reported measures of function in patients with Morton's neuroma.

[Assessment of pain, function and complications after minimelly invasive decompression of morton´s neuroma using a dorsal approach in 16 patients]. / Evaluación del dolor, función y complicaciones posteriores a la descompresión del neuroma de Morton con abordaje dorsal por mínima invasión en 16 pacientes.

BACKGROUND: The purpose of this paper is to assess pain, function and complications after decompression of Mortons neuroma using a minimally invasive dorsal approach. METHOD AND RESULTS: 16 patients who underwent 19 decompressions were followed-up for 18 months. Pain was assessed with the visual analog scale (VAS), and function was assessed with the American Orthopedic Foot and Ankle Society (AOFAS) scale. Data was analyzed with the Student t test for related samples, which yielded a p value 0.05. The possible postoperative complications assessed were: skin problems, infections, wound dehiscence, delayed bone healing and recurrence. CONCLUSION: Minimally invasive decompression of Mortons neuroma is a procedure that provides pain relief and improvement in function, with a low complication rate.

ANTECEDENTES: El objetivo de este trabajo es evaluar el dolor, la función y las complicaciones posteriores a la descompresión del neuroma de Morton con abordaje dorsal por mínima invasión. MÉTODO Y RESULTADOS: Se estudiaron 19 descompresiones en 16 pacientes, en quienes se llevó a cabo un seguimiento de 18 meses. Se evaluó el dolor con la escala visual análoga (EVA) y la función con la escala de la American Orthopaedic Foot and Ankle Society (AOFAS). Los datos fueron aplicados a la prueba de T de Student para muestras relacionadas, con la cual se identificó un valor p 0.05. Se valoraron como posibles complicaciones postquirúrgicas lesiones dérmicas, infecciones, dehiscencia, retardo en la consolidación y recurrencia. CONCLUSIÓN: La descompresión por mínima invasión del neuroma de Morton es un procedimiento que aporta alivio del dolor y mejoría de la función con un porcentaje bajo de complicaciones.

Evaluación del dolor, función y complicaciones posteriores a la descompresión del neuroma de Morton con abordaje dorsal por mínima invasión en 16 pacientes / Minimal invasive Morton's neuroma decompression: assessment of pain, function and complications in 16 patients

Resumen: Antecedentes: El objetivo de este trabajo es evaluar el dolor, la función y las complicaciones posteriores a la descompresión del neuroma de Morton con abordaje dorsal por mínima invasión. Método y resultados: Se estudiaron 19 descompresiones en 16 pacientes, en quienes se llevó a cabo un seguimiento de 18 meses. Se evaluó el dolor con la escala visual análoga (EVA) y la función con la escala de la American Orthopaedic Foot and Ankle Society (AOFAS). Los datos fueron aplicados a la prueba de T de Student para muestras relacionadas, con la cual se identificó un valor p < 0.05. Se valoraron como posibles complicaciones postquirúrgicas lesiones dérmicas, infecciones, dehiscencia, retardo en la consolidación y recurrencia. Conclusión: La descompresión por mínima invasión del neuroma de Morton es un procedimiento que aporta alivio del dolor y mejoría de la función con un porcentaje bajo de complicaciones.

Abstract: Background: The purpose of this paper is to assess pain, function and complications after decompression of Morton's neuroma using a minimally invasive dorsal approach. Method and results: 16 patients who underwent 19 decompressions were followed-up for 18 months. Pain was assessed with the visual analog scale (VAS), and function was assessed with the American Orthopedic Foot and Ankle Society (AOFAS) scale. Data was analyzed with the Student t test for related samples, which yielded a p value < 0.05. The possible postoperative complications assessed were: skin problems, infections, wound dehiscence, delayed bone healing and recurrence. Conclusion: Minimally invasive decompression of Morton's neuroma is a procedure that provides pain relief and improvement in function, with a low complication rate.