The 6 Types of Joints
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Anatomy of the Human Body

Torso(163 Lessons)
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The Basics

The 6 Types of Joints

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The 6 Types of Joints

3.8M
Mark as Completed

Assignment

I've posted 6 close-up images of Skelly's joints in the downloads tab. Your second assignment is to draw them as simple versions. When you try to put them into perspective, you may find it difficult, but I will have Marshall help you understand how to do it. Post your drawings in the Discussions.

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Samuel Sanjaya
I re-did the joints assignment again. Hoping to get some feedback/critiques on how the form looks. I think i simplify the elbow joint wrong.
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kaminari
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Samuel Sanjaya
My assignment for joints, It's a very interesting although somewhat mind taxing excersise. I hope I can get some critiques or feedbacks
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Steve Lenze
Hey Samuel, Make sure you are drawing the end of the joints the right size. I did a quick sketch to show you what I mean, I hope it helps :)
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Karas Rijji
Hello, teacher. The core of this anatomy course is to geometrize the parts of the human body, simplify complex structures, and memorize and understand the human body through the logic of perspective and geometry. Based on the teacher's demonstration (simplified geometric human body), I would like to know more about the actual human body structure, so I have shown some more complex geometric structures in my assignments, which is my understanding of the skeleton after geometrizing the figurative structures with reference to the medical mannequins. I would like to know if you think this is better? If there are any mistakes, I hope you can point them out, THANK YOU!
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Cseri Zsolt
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noemiemarques
I tried seeing the exercice of other pupils I hope I progress a little
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Logan McGaskey
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Macario Lopez
My first joint assignment (technically it's the second image) I didn't put much effort into getting accurate proportions and the angles are not completely accurate. Apart from that... What can be improved? Any feedback is much appreciated 😊
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Jesper Axelsson
Hi @Macario Lopez, nice study! - Maybe you could give the bottom of the palm a more rounded shape to emphasize that it's an ellipsoid joint, instead of drawing a box. - Some of the ellipses on the cylindrical forms are a little off. But you got it really nice on the inner lower end of the humerus. So maybe you know how to construct a cylinder already? Maybe it's just a matter of getting more experience doing it, trying some more difficult angles. If you're up to it, fill a page with cylinders from different angles. Remember to draw through. Feel free to tag me (@Jesper Axelsson) if you want me to take a look. - The circle for the sphere of the head of the humerus, isn't really circular. Maybe practicing drawing circles, and checking with a compass could be a good idea. The crosscontours are also a little off, so maybe do the same as with the cylinders; fill a page with spheres from different angles. Try to make it feel like the crosscontours are 90 degrees to one another (representing the x, y and z axis). Maybe you could use this 3D model as reference https://sketchfab.com/3d-models/lined-sphere-aa19bbaf6db94bfd93a40af6c0413d08. - A tip when drawing the crosscountors when drawing from reference, such as this image of the skeleton of the arm: Imagine touching the forms as if you had a sculpture in front of you. Imagine wrapping your hand around the humerus for example, to make sure that you know what direction it has. Your hand will wrap around like the crosscontour line would. I hope this helps :)
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Martin Dubček
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Tobias Wagner
The first three images of the assignment, before rewatching the examples by marshall (I did them 3 years ago)
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lgninal
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Jack
3mo
am I doing this right? This was fun but it definitely made me realize how much I need to work on perspective...
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Victoria Clegg
This was quite difficult.
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elliellie9956
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pencilstudent
Good practice on form. Looking forward to moving on and learning the specifics. Disregard the Skeleton head one,I will redo once I have more form and positional practice with the arms. Thought of a drill to do all rotation locations of the arm with simple forms. Need to do a cylinder isolation study to do that first.
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Jesper Axelsson
These look nice! I like the inventiveness with the mass conceptions. I'll try to look for things to improve on: - I think you could improve the accuracy of your geometric forms (boxes, cylinders & spheres). The forms feel three dimensional, but are a little off here and there (shape, angle of ellipses, convergence). This is especially clear in the spheres. If you want to work on this, draw 3 boxes in different angles from imagination, and do the same with the cylinders and boxes. Then tag me (@Jesper Axelsson) if you want me to take a look. When you draw: Draw through (drawing even the non-visible parts (lightly), as if the object was made out of glass). Boxes - Make them cubes (all the edges are the same length in space) Try to get the convergence right Cylinders - Try to get the convergence right Try to get the angle, shape and openness of the ellipses right If you draw crosscontours, remember to draw through here too Spheres (these are the most advanced) - Try to make the contour a true circle Try to get the angle, shape and openness of the ellipses right If you have 3 crosscontours (one for each axis), try to make them at right angles to eachother in space Do your best, and if there is anything you find yourself struggling with, we'll work on it😎👍 I hope this helps :)
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Macario Lopez
Is the assignment to draw the parts (as simple forms) in the same perspective as in the image or do we draw each of them in several different perspectives?
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Jesper Axelsson
I think the point is to get to know and understand the joints. So you do what you have to get there. Maybe start by drawing with the same perspective as in the image, then try drawing it in other positions or angles. I think Marshall's example videos will give you a good idea of how to approach the assignment. I hope this answers your question :)
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Manuel Rioja
Mi assignements are ready!! Nos son muy prolijas, espero ver como lo hace Proko para aprender como se hace.
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yash singh
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Amy Counsell
These are super crusty, the first 4 I did a couple of months ago and the rest I drew recently. I would've redrawn the others but I sorta wanted to move on with the course :] The perspective is off and lets not talk about the hands and feet...yeesh anyway if anyone has critique it would be greatly appreciated <3
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Benjamin Green
I'm a bit rusty. Haven't done any drawing in a few years now as I've mostly been doing 3D modeling. Feel free to critique. I know I was sloppy. I rushed it a bit. Line work is pretty wobbly with the digital tablet as well. Hopefully I'll keep getting better at it.
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Founder of Proko, artist and teacher of drawing, painting, and anatomy. I try to make my lessons fun and ultra packed with information.
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