Interdigital neuroma in the foot, generally known as Morton's neuroma, is a painful condition that produces neuropathic pain in the distribution of the affected interdigital nerve .
Here, we report a case of interdigital neuroma in the second intermetatarsal space accompanied with MTP joint instability of the second and third toes due to plantar plate rupture.
The taping was not continued for over a month by the patient because of discomfort; therefore, surgical treatment with excision of the interdigital neuroma and plantar plate repair was offered to the patient.
The histopathology result reported neural fibrosis, which was consistent with an interdigital neuroma.
Open neurectomy for interdigital neuroma is the most common procedure in patients with persistent symptoms unresponsive to the conservative treatment; however, some patients complain of continued forefoot pain even after the procedure.
Several theories have been advocated as etiologies of interdigital neuroma including the chronic repetitive trauma theory, entrapment theory, ischemic theory, and intermetatarsal bursitis theory .
When MTP joint instability and interdigital neuroma coexist, it is not easy to confirm which pathology produces the patient's chief complaint.
We reported a case of interdigital neuroma in the second intermetatarsal space which could be attributed to the MTP joint instability.
Bloome, "Concurrent interdigital neuroma and MTP joint instability: long-term results of treatment," Foot & Ankle International, vol.
Ultrasound-guided Interdigital Neuroma Injections: Short-term Clinical Outcomes after a Single Percutaneous InjectionPreliminary Results.
Occurrence of two interdigital neuromas in one foot.