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About instructor
Founder of Proko, artist and teacher of drawing, painting, and anatomy. I try to make my lessons fun and ultra packed with information.
assignments 2 submissions
Revisiting the arm bones. Feedback appreciated!
When I compared mine to Stan´s I noticed how we placed the radius differently at the wrist. I think mine looks a little weird, but I paid a lot of attention to this area, examined my own wrist; what bumps the muscles and bones form... so I´m going to be bold and say that mine is correct :)
What do you think?
I´m also conserned about my glenoid cavity placement. I found it by tracking the triceps long head to it´s origin, and I think the humerus is the right length, but I still end up with this gap between the head of the humerus and glenoid cavity. Should it be there?
Thanks in advance!
LESSON NOTES
Here’s a tracing of one of the arm bones assignments from the last lesson.
DOWNLOADS
Arm-Bones-Assignment-Example-2-1080.mp4
17 MB
ASSIGNMENTS![]()
![Marco Sordi]()
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![Jesper Axelsson]()
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![Liandro]()
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![Andrew Joseph Keith]()
2021/7/29. Hi everybody. This is my second assignment for the Arm Bones section. Thanks and have a good day.
•
5yr
Revisiting the arm bones. Feedback appreciated!
When I compared mine to Stan´s I noticed how we placed the radius differently at the wrist. I think mine looks a little weird, but I paid a lot of attention to this area, examined my own wrist; what bumps the muscles and bones form... so I´m going to be bold and say that mine is correct :)
What do you think?
I´m also conserned about my glenoid cavity placement. I found it by tracking the triceps long head to it´s origin, and I think the humerus is the right length, but I still end up with this gap between the head of the humerus and glenoid cavity. Should it be there?
Thanks in advance!
•
4yr
Hey @Jesper Axelsson, great study! One thing that stuns me in your drawings is how careful and sharp you like to be with the anatomy depiction.
I'm not sure about your glenoid cavity question, but have you considered maybe enlarging the Scapula a bit? I see you tracked the Lat, and, if I'm not mistaken, it should overlap the very bottom of the Scapula. So, by making the Scapula bigger overall, you might be able to reduce the gap between it and the Humerus.
About the Radius, I'm gonna agree with @João Bogo - when I look at that joint as very simple forms, I see the top plane of the forearm aligned with the top plane of the hand. I've also tried pressing my hand against my desk and attempting to move my forearm, but the wrist joint will always stay "locked" - when I tried this motion with my arm bent in a similar way to Laura's pose, I could only move my forearm a bit by using the shoulder joint; and even when I tried it with my arm straightened, the motion was on the elbow. So even though Laura is really super flexible (and strong by the way - that pose she's doing is absurdly difficult, I've dared to try a few times in yoga...), I guess it's anatomically impossible to rotate the forearm inward that much while keeping the hand pointing forward. Which actually makes sense with the The 6 Types of Joints lesson - since the wrist is an ellipsoid joint, it won't allow much for rotation.
Hope this helps.
Keep up the good work!
•
5yr
Nice study! I think a problem with the radius and ulna might be that it looks like it’s twisting more at the distal end in your drawing than in the reference. I really like the way you’ve treated the anatomy!
