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Well, we need to do a little drawing to attack wrist

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ligaments, TFC attachments, palmar, and dorsal.

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Let's draw.

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So in the short axis projection, let's make a radius,

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not a very good drawing, and let's make an ulna.

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And the joint between the two is

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the radioulnar articulation.

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Let me change color here so I can draw my

0:28

dorsal and my palmar radioulnar ligaments.

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Yeah, it's very rudimentary, but I'm kind of liking it.

0:36

A polar bear, a caveman, I'm keeping it simple.

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But, coming from these ligaments

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to the carpus are attachments.

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And you can best appreciate those by

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me drawing a little more sophisticated

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the triangular fibrocartilage.

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Then I'm going to change color again.

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And from the triangular fibrocartilage, we're

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going to have attachments that go to the

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carpus more towards the middle of the wrist.

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The ulnocarpal ligaments.

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And there'll be some in the front, volar ones.

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And there'll be some in the back.

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Dorsal ones.

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And then there'll be a peripheral set.

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I'll make those yellow.

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And those are also ulnocarpal ligaments, but they have

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a nice specific name, the ulnotriquetral ligaments.

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I'm gonna have some in the front,

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volar, and some in the back, dorsal.

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Now, granted, this is a planar drawing, but

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you have to imagine in your head that these

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ligaments are going from proximal to distal.

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Now, let's have a look in the sagittal projection.

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Which is often a source of confusion.

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Remember we have a dorsal radioulnar ligament.

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Here it is.

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It's the condensation of the TFC dorsally.

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From that ligament, we're gonna have another

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ligament that goes from it, from the dorsal

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radioulnar ligament, to the carpus.

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There it is.

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And that particular one is right here.

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Right near the lunotriquetral ligament.

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So this is an ulnocarpal ligament.

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If we follow that same supposition, and we go more

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peripherally towards the triquetrum, that's an

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ulnocarpal ligament known as the ulnotriquetral

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dorsal ligament, or dorsal ulnotriquetral ligament.

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If we take the same supposition in the

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front, this anterior condensed tissue here

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would be the palmar aspect, here it is, the

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palmar aspect of the radioulnar ligament.

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or volar radioulnar ligament.

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The ligament going from it to the carpus

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is going to be an ulnocarpal ligament.

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If we then follow that same supposition and we

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go off towards the side, towards the triquetrum,

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there, coming off the volar condensation

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of the TFC, coming off the palmar or volar

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radioulnar ligament, is the ulnocarpal

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ligament known as the ulnotriquetral ligament.

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The palmar ulnar triquetral ligament.

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The dorsal ulnotriquetral ligament.