Your Cart

Shoulder Anatomy: Triceps Brachii

Jul 30, 2020


MUSCLE OF THE DAY: “Triceps Brachii”

Show Up Fitness – Where Great Trainers Are Made

Learn more about becoming a personal trainer HERE.

Triceps Brachii is a 3-head posterior arm muscle that crosses two-joints. There's the long, lateral, and medial heads. All heads of the triceps insert into the elbow therefore not having any impact on radioulnar supination or deviations. When you do a biceps curl, the positioning of your hands plays a role via EMG. When doing a triceps extension, hand position DOES NOT.

Origin (proximal): LH – Infraglenoid tubercle of scapula, LH – Posterior Humerus above spiral groove, MH -Posterior Humerus below spiral groove.

Insertion (distal): Olecranon process of ulna

Action: Long Head = Elblow Extension, Extension & Adduction of Humerus, Lateral & Medial Head = elbow extension only.


Common Injuries to the Triceps:

Here's what our partners at The Prehab Guys have to say about shoulder & Triceps health:


BACKGROUND INFO: The Triceps originate from the shoulder blade and Humerus (upper arm bone) inserting into the ulna (forearm bone). Distal Triceps Tendinopathy typically presents after overusing the triceps; these muscles are elbow extenders (help with straightening your arm). This overuse often occurs with repetitive pushing movements, ultimately leading to tendon degeneration where the triceps attach onto the elbow (olecranon). WHAT TO CHECK: Triceps tendinopathy often presents as pain in the back of the elbow, just above the bone. Typically, there will be pain as you straighten the arm, which will activate the triceps. There may also be a recreation of pain with palpation, to find the distal triceps come just above the elbow bone. There may also be some discomfort when you passively bend the elbow, this is stretching the triceps. WHAT TO AVOID: Avoid loading your triceps with very heavyweights. The triceps will extend or straighten your elbow. Be careful with movements that require heavy pushing like boxing, throwing, gymnastics, or push-ups. If you do load the triceps, make sure it is performed slow and controlled. The tendon will need load as part of the rehab process, the key is to slowly progress how much you load this region. WHAT TO EXPECT: Just like most tendinopathies, the rehab process is very slow. It may take a few months to get back to using that tendon pain-free.”



If you want to become a personal trainer, Show Up Fitness has the nation's best personal training internship program that you can complete within 2-months. Whether if your NASM, NSCA, ACSM or whatever lucky certification acronym you have, our internship program is for you! Our classes are for certified personal trainers, fitness enthusiasts, and aspiring trainers who need to gain experience, learn in-depth anatomy, nutrition, sales, how to grow your social media following, and designing programming. Over 80% of trainers who get certified (usually by NASM, ACE, or ISSA), invest too much money and then quit within 12-months because they have no idea how to train and'or maintain/grow their book of business. Now that SHOW UP FITNESS is online, you can take classes at , learn for 1-2 months and then SHOW UP for the in-person internship in San Diego, Los Angeles and NOW Santa Monica. We have 12-month payment plans for as little as $200/month.

Leave a comment

Please note, comments must be approved before they are published