PT  - JOURNAL ARTICLE
AU  - Richard A C Dimock
AU  - Edward John Christopher Dawe
AU  - Olusegun Aiyenuro
TI  - Compensating for loss: running on one tibialis anterior
AID  - 10.1136/bcr-2017-219834
DP  - 2017 May 03
TA  - BMJ Case Reports
PG  - bcr-2017-219834
VI  - 2017
4099  - http://casereports.bmj.com/content/2017/bcr-2017-219834.short
4100  - http://casereports.bmj.com/content/2017/bcr-2017-219834.full
AB  - Rupture of the tibialis anterior (TA) tendon is rare and may be either traumatic or spontaneous. TA is the main ankle dorsiflexor, providing 80% of the power, as well as contributing to inversion of the foot. We describe a case of an 84-year-old male who was incidentally diagnosed with absence of his left TA at age 46 while preparing for his first-ever marathon. There was no history of specific injury to this tendon. He subsequently went on to lead an active sporting life, completing over 20 marathons with a best time of 3 hours 12 min.