Elbow Hinge Joint
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PRESENTATION OUTLINE
MUSCLES OF THE ELBOW
TENDONS, LIGAMENTS, AND BONES OF THE ELBOW JOINT
HUMAN ELBOW RANGE OF MOTION
165°
The human elbow has a wide range of motion. In can completely straighten and bend 165°.
LIGAMENTS IN THE ELBOW
Our model
Examples in man-made objects:
Photo by glintofpewter
Hinge on a laptop opening and closing mechanism
Photo by karlaredor
LAPTOP HINGE DIAGRAM
Hinge on a door
DOOR HINGE DIAGRAM
COMMON ELBOW INJURIES:
- Dislocation
- Pulled muscles
- Injury to tendons and ligaments in joint
- Bruising
- Fractures to the radius, ulna, or humerus at the elbow joint
- Tennis elbow
Photo by Martin.Boyer
HINGE JOINT IN OTHER ANIMALS:
Photo by me'nthedogs
HINGE JOINT IN A DOG
HINGE JOINT IN A DOG
- Same range of motion as human elbow
- Moves on one plane
- Connected to main portion of body, unlike human
- Humerus is shorter, but the radius and ulna are longer
HINGE JOINT IN A HORSE
HINGE JOINT IN A HORSE
- Same range of motion as human: moves on one plane
- Bones in forelimb are proportionally thicker and shorter because they are weight-bearing
- Elbow is connected to main section of body of horse; it is used more as a shoulder in comparison to a human
HINGE JOINT IN TYRANNOSAURUS REX
HINGE JOINT IN A T-REX
- Very small bones compared to rest of the body in a T-Rex, but humans have proportionally larger arm bones
- Arm is used for grabbing prey
- The human elbow has a 165° range of motion; the dinosaur only has 45° of motion
- The T-Rex's humerus, radius, and ulna are very dense
BIBLIOGRAPHY - PHOTOS
- https://classconnection.s3.amazonaws.com/479/flashcards/3432479/png/screen_...
- http://kingbrand.com/images/elbow_muscleTendons_large.jpg
- http://media-2.web.britannica.com/eb-media/72/106172-004-156178A5.jpg
- Elbow X-rays, factory, laptop, dog running, and teal background photos are from Haiku Deck.
Photo by Marcin Wichary
BIBLIOGRAPHY - PHOTOS PART 2
- http://www.enchantedlearning.com/cgi-bin/paint/La/subjects/dinosaurs/dinote...
- http://www.merckvetmanual.com/media/pet/figures/DDH_horse_shoulder_and_elbo...
- https://upload.wikimedia.org/wikipedia/commons/2/2c/Tyrannosaur_arm_104.JPG
- https://www.pinterest.com/pin/233835405628423130/
- http://www.engadget.com/2007/02/06/how-to-make-a-wii-laptop-part-3-the-fina...
Photo by Daniel Dudek-Corrigan
BIBLIOGRAPHY-INFORMATION
- http://www.webmd.com/a-to-z-guides/elbow-injuries-topic-overview
- http://cal.vet.upenn.edu/projects/saortho/appendix_b/appb.htm
- http://www.thehorse.com/articles/15912/synovial-joints-and-how-they-work
- http://www.cs.mcgill.ca/~rwest/wikispeedia/wpcd/wp/t/Tyrannosaurus.htm
- https://www.fgc.edu/wp-content/uploads/2011/12/averages-of-rom.pdf
Photo by somegeekintn
