Ultrasound Diagnosis of Adventitial Bursitis at The First Metatarsal Head

Abstract

Adventitial bursitis in the plantar aspect of the first metatarsal heads is characterized by abrupt onset of localized deep and discomfort in the plantar aspect of the first metatarsal head aggravated by walking. Diagnosis of adventitial bursitis is difficult to be established based solely on clinical findings, conventional radiography does not allow diagnosis of soft-tissue disorders especially bursitis. Musculoskeletal ultrasound is a useful imaging modalities to support the clinical diagnosis of soft tissue disorders such as bursitis. To our knowledge, sonographic findings of adventitial bursitis have been rarely reported. Here we present a case report of a patient with pain in the plantar aspect of the left first metatarsal head.

Association between forefoot pain and sesamoid rotation angle determined using a weight-bearing plantar ultrasound imaging device

“…The first metatarsophalangeal joint (1MTPJ) transmits approximately 50% of the body weight during gait [16] and the sesamoids transmit loads greater than 300% of body weight during the pushoff phase of gait [11,17]. These functions and the complicated anatomy of the sesamoids make this region more susceptible to injuries leading to forefoot pain [9,[18][19][20].…”