Lena Savoie
Morton's neuroma is a common cause of forefoot pain, often occurring between the third and fourth toes. It is a benign inflammation of the nerve in the foot. While surgery is an option, non-surgical treatments include icing, padding, activity modifications, wider shoes, and custom-designed orthotics. Alcohol injections are another non-surgical option. The safety of alcohol injections for treating Morton's neuroma has been assessed in several studies, with one study finding that the treatment was well tolerated with no major complications. However, another study found that while short-term results are encouraging, alcohol injections do not offer a permanent resolution of symptoms and can be associated with considerable morbidity.
| Characteristics | Values |
|---|---|
| Safety | Alcohol injections for Morton's neuroma are generally considered safe, with no major complications reported in some studies. However, one study reported that it can be associated with considerable morbidity. |
| Efficacy | The injections have a high success rate, with 94% of patients reporting partial or total symptom improvement, and 84% becoming pain-free. The injections may shrink the neuroma, but they typically kill it, resulting in minor numbness that lasts about six months. |
| Advantages | Quick recovery, no downtime, and the ability to avoid surgery in most cases. |
| Disadvantages | May not provide a permanent resolution of symptoms and can cause increased local pain in some cases. |
| Treatment Frequency | Injections are typically given every 10 to 14 days until symptoms subside, with most cases requiring 3 to 7 injections. |
| Concentration | The concentration of alcohol varies depending on the type of injection. Sclerosing injections use a low concentration of around 4% alcohol, while neurolytic injections use a much higher concentration, more than ten times the dose of sclerosing injections. |
| Guidance | Ultrasound or sonographic guidance is recommended, especially for neurolytic injections with higher alcohol concentrations. |
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What You'll Learn
- A study found that alcohol injections for Morton's neuroma are safe and efficacious
- The injections are well tolerated and have a high success rate
- There are two types of alcohol injections: sclerosing and neurolytic
- Sclerosing injections have little effect and may increase discomfort
- Neurolytic injections are more effective but must be done under ultrasound guidance
A study found that alcohol injections for Morton's neuroma are safe and efficacious
A study published in the American Journal of Roentgenology assessed the safety, tolerance, and outcome of alcohol injections for 101 patients with Morton's neuroma. The results showed that a series of sonographically guided 20% alcohol injections for symptomatic Morton's neuroma is safe, well tolerated, and efficacious. The treatment allows patients to avoid surgery and resume their daily activities the day after treatment.
The study included 101 consecutive patients with a clinical and sonographic diagnosis of Morton's neuroma. An average of 4.1 treatments per person were administered, and follow-up images were obtained at a mean of 21.1 months after the last treatment. Technical success was 100%, with partial or total symptom improvement reported by 94% of patients and 84% becoming totally pain-free. The median visual assessed pain score decreased from 8 before treatment to 0 after treatment. There were no major complications, and only a transitory increase in local pain occurred in 17 cases (16.8%).
The alcohol injection treatment for Morton's neuroma is a form of chemical neurolysis that involves injecting a sterile solution of 4% ethyl alcohol mixed with long-acting Novocain containing epinephrine. This procedure is typically performed in an office setting and the injection is given just proximal to and around the neuroma. The alcohol penetrates the nerve, causing degeneration and atrophy of the neuroma, which eliminates its function. Most cases require about 3 to 7 injections, with a success rate of approximately 90%.
It is important to note that not all alcohol injections for Morton's neuroma are the same. There are two types: alcohol sclerosing injections and neurolytic alcohol injections. Alcohol sclerosing injections are typically done with a low concentration of alcohol (around 4%) and are blindly injected into the neuroma, often with limited effectiveness. On the other hand, neurolytic alcohol injections use a much higher concentration of alcohol and are performed under ultrasound guidance by experienced clinicians. These injections have been found to be highly effective, with an efficacy rate of over 85%.
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The injections are well tolerated and have a high success rate
Alcohol injections for Morton's neuroma are generally well tolerated and have a high success rate. One study found that out of 101 patients, 94% reported partial or total symptom improvement, with 84% becoming totally pain-free. The median visual pain score decreased from 8 before treatment to 0 after treatment. There were no major complications observed, and only a slight increase in local pain occurred in 17 cases (16.8%).
The injections are typically performed under ultrasound or sonographic guidance and can be an effective non-surgical option for treating Morton's neuroma, a common cause of forefoot pain. The procedure involves injecting a solution of alcohol, usually in low concentrations, into the affected nerve, causing degeneration and atrophy of the neuroma. This results in the elimination of nerve function. Multiple injections, usually between 3 to 7, may be required at intervals of 10 to 14 days until symptoms subside.
Neurolytic alcohol injections, which use much higher concentrations of alcohol, have also been found to be very effective, with research indicating an efficacy rate of over 85%. These injections are typically performed by experienced clinicians under ultrasound guidance to ensure accuracy and safety. While this type of injection may not shrink the neuroma, it effectively kills it, resulting in minimal complications aside from minor numbness that lasts about six months.
Overall, alcohol injections for Morton's neuroma offer a well-tolerated and successful treatment option, providing pain relief and improved mobility for patients.
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There are two types of alcohol injections: sclerosing and neurolytic
Alcohol injections are a non-surgical treatment option for Morton's neuroma, a common cause of forefoot pain. The procedure involves injecting alcohol into the affected nerve under sonographic or ultrasound guidance. This treatment has a high success rate, with many patients reporting significant pain relief and improved symptoms.
There are two types of alcohol injections for Morton's neuroma: sclerosing and neurolytic. The former, also known as the "typical" alcohol injection, is performed with a low concentration of alcohol (around 4%) and is blindly injected into the neuroma. This type of injection is often repeated multiple times, and some believe it may result in scar tissue growth and increased discomfort for the patient. The latter, the neurolytic alcohol injection, is performed with a much higher concentration of alcohol (more than 10 times the dose of sclerosing injections). Due to the higher concentration, neurolytic injections should always be administered under ultrasound guidance by experienced clinicians.
Neurolytic injections are considered very effective, with research showing an efficacy rate of over 85%. While this type of injection may not shrink the neuroma, it kills it and typically results in minor numbness that lasts about six months. One or two injections are usually sufficient for full pain relief, and the pain relief is often permanent. In rare cases, the nerve may regrow after 6-8 years, requiring a repeat injection.
Overall, alcohol injections for Morton's neuroma are generally safe and well-tolerated, with a low risk of major complications. However, it is important to note that, as with any medical procedure, there are potential risks and side effects associated with alcohol injections, including temporary increased local pain and, in rare cases, digital ischemia.
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Sclerosing injections have little effect and may increase discomfort
Alcohol sclerosing injections are a form of chemical neurolysis that uses a sterile solution of 4% ethyl alcohol mixed with a long-acting Novocain containing epinephrine. This procedure is typically performed in a clinical setting and consists of an injection of the mixture just proximal to and around the neuroma. The alcohol penetrates the nerve, causing degeneration and atrophy of the neuroma and eliminating its function.
While sclerosing injections are generally considered safe and well-tolerated, with a high success rate of around 90%, there are concerns about their limited effectiveness in treating Morton's neuroma. The typical alcohol sclerosing injection is performed with a low concentration of alcohol (around 4%) and is injected blindly into the neuroma, often requiring multiple repetitions. This type of injection may have minimal impact on the neuroma and could potentially lead to scar tissue growth and increased discomfort for the patient. In a study of 101 patients who received sonographically guided alcohol injections, there was a reported increase in local pain in 17 cases (16.8%), although no major complications were observed.
The limited effectiveness of sclerosing injections may be due to the low concentration of alcohol used. In contrast, neurolytic alcohol injections employ a much higher concentration of alcohol, typically more than ten times the dose of a sclerosing injection. These injections are designed to kill the neuroma rather than just shrink it, and they have been shown to have high efficacy rates of over 85%.
It is important to note that the success and comfort of any injection treatment can depend on the skill and experience of the clinician performing the procedure. Neurolytic injections, for example, should always be administered under ultrasound guidance by highly experienced professionals due to the higher risks associated with the increased concentration of alcohol.
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Neurolytic injections are more effective but must be done under ultrasound guidance
There are two types of alcohol injections for Morton's neuroma: sclerosing injections and neurolytic injections. The former is typically done by podiatrists and involves a very low concentration of alcohol (around 4%) that is blindly injected into the neuroma and repeated several times. This type of injection is believed to have little effect and may even result in scar tissue growth and increased discomfort for the patient.
Neurolytic injections, on the other hand, are done with much higher concentrations of alcohol (more than 10 times the dose of sclerosing injections). These injections are highly effective, with recent research showing they have over 85% efficacy. They deaden the neuroma, completely removing its ability to transmit pain and stopping its growth. Neurolytic injections usually result in very few complications, with some minor numbness being the most common side effect. This numbness typically lasts about six months, and one or two injections are usually sufficient for full and permanent pain relief.
Due to the higher alcohol concentration used in neurolytic injections, they must always be performed under ultrasound guidance by highly experienced clinicians. Ultrasound guidance helps ensure the accurate placement of the injection, reducing the risk of complications. In a case series of 101 individuals with Morton's neuroma, Hughes and colleagues (2007) administered four ultrasound-guided injections of 20% ethanol at 14-day intervals, with an average follow-up of 10.5 months after the last injection. This study demonstrated the effectiveness of ultrasound-guided neurolytic injections in treating Morton's neuroma.
While neurolytic injections are highly effective, they are not permanent solutions for everyone. In rare cases, the nerve can regrow, causing irritation or pain again after 6-8 years. However, even in these cases, a single repeat neurolytic injection is usually sufficient to provide long-lasting relief. Overall, neurolytic injections are a safe and effective treatment option for Morton's neuroma when performed by experienced clinicians using ultrasound guidance.
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Frequently asked questions
A study found that a series of sonographically guided 20% alcohol injections for symptomatic Morton's neuroma is safe, well tolerated, and efficacious with results comparable to surgical resection. There were no major complications.
Advantages of alcohol injections include quick recovery, no downtime, and in most cases, the ability to avoid surgery. The injections are also associated with less morbidity than surgery.
An average of 4.1 treatments per person were administered. However, most cases require about 3 to 7 injections, given every 10 to 14 days until symptoms subside.
