Think You Are Ready for Minimalist Shoes…Think Again
Ability to isolate the Flexor Hallucis Brevis: a key factor that distinguishes humans from primates is our medial longitudinal arch. This arch is actively stabilized by the flexor hallicus brevius (FHB). While standing, try to drive the big toe (1st MTP) into the ground (plantar flexion) while slightly elevating (dorsiflexing) the lesser toes. Make sure not to roll the ankle in or out. This test enables screening of muscles inside the foot that stabilize the arch. The FHB can be easily distinguished from the longus (FHL), as the FHL crosses another joint in your big toe (1st IP joint), resulting in your big toe curling. Spend some time getting to know your foot. Aim to drive the big toe down while lifting the little toes (without curling the big toe!), and lift the big toe up while driving the little toes down. It’s the best way to work on coordination of muscles that actively stabilize the foot in stance. It’s your foot – control it! If you can do this, it’s a sign that you can keep the rear foot stable on the forefoot when the body sees the greatest amount of pronation (which is just slightly after midstance and AFTER the heel is off of the ground by the way.)1 Midstance is when forces are highest throughout the body- about 2.5x’s your body weight. You need the internal strength to be able to respond to these forces to keep things in alignment.