[The anterior tarsal tunnel syndrome: a case report]. / LE CAS CLINIQUE DU MOIS. Le syndrome tarsien antérieur.

The anterior tarsal tunnel syndrome is a rare entrapment neuropathy of the deep peroneal nerve beneath the inferior extensor retinaculum of the ankle. It is frequently unrecognized and may lead to misdiagnosis and delayed treatment. We report the case of a 77 year old patient complaining of symptoms of an anterior tarsal tunnel syndrome with neuropathic pain located at the dorsal part of the foot, without any sensorimotor loss. The ENMG was in favour of a motor impairment of the deep peroneal nerve. MRI exploration of the ankle showed a millimetric bony overgrowth of the upper pole of the navicular bone, irritative to the deep peroneal nerve. Infiltration at overgrowth of the navicular provided a partial and temporary decrease in pain symptoms. Surgical nerve decompression was then considered.

[Bilateral peroneal neuropathy following bariatric surgery]. / Neuropathie bilatérale du nerf fibulaire commun après chirurgie bariatrique.

We report the case of bilateral peroneal neuropathy following massive weight loss after bariatric surgery. A few months after a gastric by-pass, the patient developed sequentially within 6 months a L2-L3 herniated disc that required surgery, a severe right peroneal nerve palsy that led to decompressive surgery and finally contralateral peroneal nerve palsy also operated. The electrophysiological analysis confirmed the clinical suspicion of peroneal nerve compression at the fibular head. Postoperative course was favorable. Literature reports peroneal nerve palsy after slimming, mostly when weight loss is fast and marked although the issue is rarely bilateral.