Muscle Palpation - Abductor Hallucis [1st Layer of Intrinsic Foot Muscle] [ASMR]

This is a detailed, step by step, description on how to palpate Abductor Hallucis by Keith Bootsma, RMT.
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Origins:
1-Medial Process of the Tuberosity of the Calcaneus
2-Flexor Retinaculum
3-Plantar Fascia
Insertion:
Medial Plantar Side of the Proximal Phalanx of the 1st (Big) Toe
Functions:
1-Abduction of the 1st (Big) Toe @ the MTP Joint
2-Flexion of the 1st (Big) Toe @ the MTP Joint
Nerve: Medial Plantar Nerve
Activation: Abduction of the 1st Toe and Slight Flexion of the 1st Toe
Lengthening: Adduction of the 1st Toe and Slight Extension of the 1st Toe

[@BodiaH]

hi. I can't help but wonder about Flexor Hallucis Brevis's outer head. Does it mean that the Abductor Hallucis overlaps with it?

[@blackriverbootsmaeducation]

The Flexor Hallucis Brevis muscle has two heads, the medial and lateral (or outer) head. It's located in the sole of the foot and is involved in flexing the big toe. The Abductor Hallucis muscle, on the other hand, is positioned on the medial side of the foot and is responsible for moving the big toe away from the other toes.
While these muscles are close to each other and both relate to the movement of the big toe, the Abductor Hallucis does not overlap with the outer head of the Flexor Hallucis Brevis. They are distinct muscles, each with its own specific function and attachment points on the foot. The Flexor Hallucis Brevis generally lies deeper in the sole of the foot compared to the Abductor Hallucis.
In human anatomy, the term "overlap" can be a bit misleading. The Flexor Hallucis Brevis and the Abductor Hallucis do not literally overlap in the sense of one muscle layering on top of the other. However, they are closely situated and can appear to blend together, especially at the point where their tendons insert near the big toe.
The muscles of the foot are intricately arranged and often have very close anatomical relationships. This close proximity allows them to work in coordination for complex foot movements. While they don't overlap in a strict sense, their close placement can give the impression of overlapping, particularly in a dissection or detailed anatomical diagram.

[@BodiaH]

Thank you for a very detailed answer. Seems like I have ruptured a lateral head of the abductor hallucis on my right foot.
Hurts when flexing (can't use it to balance myself when standing at all) and have a cavitation on the sole of the foot. Also, it looks like the most (if not all) of the flexion is done by the adbuctor hallucis.
I only hope that the tear is not full and it will recover with time... It's been 3 weeks since incident. (overuse). Now waiting for it to heal.
P. S. There was no swelling. But so some reason I noticed that there usually is no swelling when my muscles on hands/feet partially tear... Only the cavitation is left when the muscle used to be. And also the protrusion where the muscle is contructed.

[@CrisaaqYusuf-sk8lt]

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