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We're talking foot and ankle tendons

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introduction, and it's as easy as 1, 2, 3, 4.

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One, in the back, the achilles.

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Out laterally, two,

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the peroneus brevis and longus.

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Medially, Tom, Dick, and Harry.

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The tibialis posterior, the flexor digitorum longus,

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and the flexor hallucis longus for Harry.

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Then up front, we've got Tom, Harry,

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and Dick.

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Tom is the tibialis anterior.

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Harry is the extensor hallucis longus.

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And Dick is the extensor digitorum traveling

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along with, number four, the peroneus tertius.

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Now we also, as we scroll through and look

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at these tendons, one, two, three, four,

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they are secured by various retinacula.

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In the front, the retinaculum is

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known as the extensor retinaculum.

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There it is.

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It's thin and wispy.

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Sometimes it's a little multi-laminated.

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When you're above the ankle, we call

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it the superior extensor retinaculum.

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When you're high up.

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When you're below the ankle, we call it 27 00:01:17,245 --> 00:01:18,964 the inferior extensor retinaculum.

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So you kind of use the ankle

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joint as a general guide.

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We also have a peroneal retinaculum out to the side.

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32 00:01:28,414 --> 00:01:32,925 And that peroneal retinaculum also has a superior

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and inferior lateral peroneal retinaculum.

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The inferior being below the ankle joint.

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There it is, we're below the ankle joint.

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Then as we get up higher, the superior

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peroneal retinaculum above the ankle joint.

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Then on the medial side, we've got the

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laciniate ligament, which is misnamed.

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It's also known as the medial retinaculum,

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it's not really a ligament,

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and helps secure the medial structures.

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You can see that these retinaculas start

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to fade and get a lot thinner and wispier

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as we go from anterior to posterior.

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There is not a specific retinaculum for the

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achilles, but what makes the achilles a little bit

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unique is it's surrounded by peritenon as opposed

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to being surrounded by a tenosynovial sheath,

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like many of the other tendons of the foot.

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Let's move on, shall we, from this introduction.