How to perform a partial nail avulsion (PNA) for an ingrown toenail (onychocryptosis)?

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Last updated: May 26, 2025View editorial policy

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From the Guidelines

To resect an ingrown toenail, I strongly recommend a partial nail avulsion under local anesthesia, as this approach has been shown to be effective in managing severe paronychia, which can be associated with ingrown toenails 1. When performing the procedure, it is essential to follow proper techniques to minimize complications and promote healing. The procedure typically involves cleaning the area, injecting a local anesthetic such as lidocaine (1-2%) at the base of the toe for pain control, and then using specialized nail splitters to cut the ingrown portion of the nail vertically from the tip to the base. Some key points to consider when resecting an ingrown toenail include:

  • Using proper sterile technique to minimize the risk of infection
  • Applying antibiotic ointment (such as bacitracin or mupirocin) and a sterile dressing after the procedure
  • Keeping the area clean and changing dressings daily to promote healing
  • Soaking the toe in warm water with Epsom salt for 15 minutes 2-3 times daily for several days to reduce discomfort and promote healing
  • Managing discomfort with over-the-counter pain relievers like acetaminophen or ibuprofen It is crucial to seek professional medical care from a podiatrist or physician rather than attempting self-treatment, as they can assess the severity of the condition and provide appropriate guidance and care. In some cases, applying phenol (88%) to the nail matrix may be necessary to prevent regrowth of the problematic portion of the nail, as suggested for the treatment of severe paronychia 1. Overall, a partial nail avulsion under local anesthesia is a effective approach for resecting an ingrown toenail, and proper post-procedure care is essential for promoting healing and preventing complications.

From the Research

Resection of Ingrown Toenail

To resect an ingrown toenail, several surgical approaches can be considered, including:

  • Partial avulsion of the lateral edge of the nail plate 2
  • Matrixectomy, which can be performed through surgical, chemical, or electrosurgical means 2
  • Chemical matrixectomy using phenol 3, 4
  • Mechanical resection of the lateral matrix horn 3
  • Other surgical techniques such as the Winograd technique, Vandenbos procedure, radiofrequency ablation, bipolar diathermy, carbon dioxide laser ablation, Zadik's procedure, Howard-Dubois procedure, Super U procedure, Noël's procedure, knot technique, and toenail paronychium flap 5

Considerations for Resection

The choice of surgical approach depends on the severity and recurrence of the ingrown toenail 5. It is essential to consider the patient's co-morbidities, severity, and associated symptoms when selecting a treatment option 6. Conservative treatments, such as correcting inappropriate footwear, managing hyperhidrosis and onychomycosis, soaking the affected toe, and applying topical steroids, should be considered before proceeding to surgical options 2, 6.

Surgical Techniques

Surgical techniques aim to remove the interaction between the nail plate and the nail fold to eliminate local trauma and inflammatory reaction 2. The use of traumatic surgical techniques, such as the "Emmert plasty" or wedge excisions, is not recommended 3. Phenol cauterization of the lateral nail matrix has been shown to be an effective, safe, and commonly performed method 4.

References

Guideline

Guideline Directed Topic Overview

Dr.Oracle Medical Advisory Board & Editors, 2025

Research

Ingrown Toenail Management.

American family physician, 2019

Research

[Ingrown toenail: when and how to treat?].

Dermatologie (Heidelberg, Germany), 2025

Research

Onychocryptosis - decrypting the controversies.

International journal of dermatology, 2020

Professional Medical Disclaimer

This information is intended for healthcare professionals. Any medical decision-making should rely on clinical judgment and independently verified information. The content provided herein does not replace professional discretion and should be considered supplementary to established clinical guidelines. Healthcare providers should verify all information against primary literature and current practice standards before application in patient care. Dr.Oracle assumes no liability for clinical decisions based on this content.

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