A practical guide to the care of ingrown toenails

Nail edge excision without matricectomy. This procedure involves removing one-quarter to one-third of the nail from the symptomatic edge. This procedure takes little time and is easy to perform. Recurrence rates are > 70% for the same reasons as outlined above.⁹ (Often during preparation for this procedure, a loose shard of nail is observed puncturing the periungual skin. Removal of this single aberrant portion of nail is frequently curative in and of itself.) Patients typically report rapid relief of symptoms, so this procedure may be favored when patients do not have the time or desire to attempt more definitive therapy. However, patients should be advised of the high recurrence rate.

Nail excision with matricectomy using phenol (ie, phenolization). In this procedure, the nail is avulsed, and the matrix is destroyed with phenol (80%-88%).^9,12 Typically, this is performed only on the symptomatic edge of the nail. The phenol should be applied for 1 to 3 minutes using a cotton-tipped applicator saturated in the solution. Recurrence rates are as low as 2% when the phenol is applied for 3 minutes, although the risk for symptomatic drainage of the wound after 2 weeks is > 50%. When applied for only 1 minute, the recurrence rate is approximately 12% but the risk for drainage at 2 weeks is also 12%.¹² (Other studies have reported recurrence rates up to 50%.¹³)

Surgical therapies are indicated for severe cases of onychocryptosis or for those who do not respond to a 3-month trial of conservative care.

While phenolization is relatively quick and simple—and is associated with good cure rates—it causes pain and disability during the healing process and takes several weeks to heal. Phenolization also has a slightly increased risk for infection when compared to nail excision without matricectomy. Giving antibiotics before or following the procedure does not appear to reduce this risk.⁷ If the matrix is incompletely destroyed, a new nail spicule may grow along the lateral nail edge and a repeat procedure may be required.⁷ When properly performed, the nail will be narrower but should otherwise maintain a more-or-less normal appearance. The use of phenolization for the treatment of onychocryptosis in the pediatric population has been found to be successful, as well.¹⁴

The Vandenbos procedure. This procedure involves removing a large amount of skin from the lateral nail fold and allowing it to heal secondarily. When performed correctly, this procedure has a very low recurrence rate, with no cases of recurrence in nearly 1200 patients reported in the literature.¹⁵ The cosmetic results are generally superior to the other surgical methods described here⁵ and patient satisfaction is high.¹⁵ It has been used with similar effectiveness in children.¹⁶

The Vandenbos procedure can definitively treat onychocryptosis with a good cosmetic outcome.

Full recovery takes about 6 weeks. Overall, the Vandenbos procedure can definitively treat the condition with a good cosmetic outcome. (See “How to perform the Vandenbos procedure.”)

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