Foot Melanoma Localized to Subungual Toe Location Portends Poorer Prognosis.

Our group previously reported that melanoma of the foot is associated with advanced disease on diagnosis and decreased survival. Lesions localized to the toe appeared to have the worst outcomes. In this study, we both expanded our study to include a 10-year population of patient with invasive melanoma of the foot and ankle and investigated additional factors associated with prognosis. Between January 2007 and December 2016, 211 patients underwent biopsy diagnosis and surgery for invasive melanoma in the BLANK health care system. Demographic, pathologic, staging, and localization characteristics were studied for overall survival. Lesions were localized to dorsal foot, plantar foot, toe (nonsubungual), and toe (subungual) locations. Multivariable analysis found Breslow depth, ulceration, lymph node involvement, and subungual toe location to be associated with poorer survival. Overall survival rate for foot melanoma was 70.6%. Overall survival for nonsubungual toe melanoma was 60.7%, compared to 53.1% for subungual toe melanoma. Of the subungual melanomas, 37.5% of presented as deep lesions with a Breslow depth >4.0 mm. Subungual melanoma was statistically significant for and found to be an independent prognostic factor associated with poorer survival and advanced disease. Based on the results of this study, there should be a low threshold to biopsy suspicious lesions of the toe and foot with particular attention to be dedicated to subungual lesions.

Ponseti Idiopathic and Nonidiopathic Clubfoot Correction With Secondary Surgeries.

The Ponseti method has revolutionized clubfoot treatment for not only idiopathic clubfoot but also non-idiopathic clubfoot. This study aimed to validate the existing literature with respect to the Ponseti method serving as first line treatment for clubfoot. The purpose of this study was to compare clubfoot type and recurrence with secondary surgical procedures following Ponseti method. Kaiser Permanente Northern California database was queried to identify clubfoot children under 3 years old with a consecutive 3-year membership. Associated comorbidities and operative procedure codes were identified. Chart review was performed on all surgical clubfoot patients who completed Ponseti method. Patients' average age at time of surgery, frequency of surgeries, and types of procedures performed were recorded. A logistic regression analysis assessed the adjusted association between surgery status and clubfoot type. Clubfoot incidence was about 1 in 1000 live births. Of the 375 clubfoot children, 334 (89%) were idiopathic and 41 (11%) were non-idiopathic. In the total study population, 82% (n = 309) patients maintained Ponseti correction without a secondary surgery; 66 patients (18%) underwent subsequent secondary surgeries. The non-idiopathic clubfoot underwent surgery more frequently compared to idiopathic clubfoot patients (41.5% vs 14.7%, respectively, p = .0001). Non-idiopathic clubfoot children underwent surgery at a younger age. This study validates the Ponseti method is the first line treatment for clubfoot correction despite etiology. However, patients with recurrent clubfoot may require secondary surgery following Ponseti method. Clubfoot recurrence surveillance is key for identifying early symptomatic recurrence in order to minimize foot rigidity and the need for osseous procedures.

Microorganisms Associated With Osteomyelitis of the Foot and Ankle.

Osteomyelitis of the foot and ankle is a challenge to treat and creates a significant demand on both the patient and the healthcare system. The purposes of this study were to determine the microorganisms associated with foot and ankle osteomyelitis, to evaluate the change in methicillin-resistant Staphylococcus aureus (MRSA) between 2005 and 2010, and to determine the relationship between these infecting organisms and patient comorbidities. The medical records for 302 patients diagnosed with osteomyelitis of the foot and ankle, 151 in 2005 and 151 in 2010, were randomly selected and evaluated. The authors reviewed the demographics, comorbidities, microorganism(s) confirmed with bone biopsy and culture, location, and use of antibiotics before bone biopsy. Gram-positive bacteria were the most prevalent, composing 81.9% of the isolates in 2005 and 59.6% in 2010. Methicillin-sensitive Staphylococcus aureus was the most common in both cohorts. Conversely, the incidence of MRSA statistically decreased from 28.3% to 10.6% from 2005 to 2010 (p < .0001). Gram-negative bacteria were found in 39.5% of the 2005 isolates and 31.8% of those from 2010. Pseudomonas sp. was the most common gram-negative bacteria. Patients with peripheral vascular disease had a significantly higher incidence of gram-negative bacteria (odds ratio 2.1, 95% confidence interval, 1.3 to 3.6, p = .003). The results of this study reveal that MSSA was the most common bacteria, incidence of MRSA decreased between the 2005 to 2010, and patients with peripheral vascular disease have a significantly higher incidence of gram-negative bacteria.

Melanoma of the Foot Is Associated With Advanced Disease and Poorer Survival.

The purpose of the present study was to review the outcomes and assess the prognostic factors associated with foot melanoma. We hypothesized that primary melanoma of the foot would be more likely to present at an advanced stage and be associated with poorer outcomes. Both univariate and multivariate analyses were conducted to examine the relationships between patients' demographic, clinical, and pathologic characteristics and deaths within 5 years. Categorical data were summarized as frequencies and percentages and continuous variables as mean ± standard deviation. The primary outcome measure was overall survival. On univariate analysis, the significant prognostic variables found included Breslow thickness, ulceration, sentinel node positivity, and localized presentation on the toe. Age, sex, and race were not prognostically significant in this model. Multivariate Cox proportional hazards analysis resulted in a model of foot melanoma with ulceration and location on the toe as independent prognostic variables. The 5-year survival rate for melanoma of the toe was 50%. The results of the present study have shown that physicians should have a low threshold to biopsy suspicious lesions of the foot and ankle. Advanced disease and poorer survival were noted with toe melanoma. An ulcerative lesion of the foot was also associated with poorer survival.

Orthobiologics.

Use of orthobiologics in sports medicine and musculoskeletal surgery has gained significant interest. However, many of the commercially available and advertised products are lacking in clinical evidence. Widespread use of products before fully understanding their true indications may result in unknown adverse outcomes and may also lead to increased health care costs. As more products become available, it is important to remain judicial in use and to practice evidence-based medicine. Likewise, it is important to continue advances in research in hopes to improve surgical outcomes. This article reviews clinical evidence behind common orthobiologics in the treatment of foot and ankle pathology.