The gluteus medius is an incredibly important muscle. It is functionally important at the hip joint, especially with frontal-plane mechanics. And this can have implications with dysfunctional movement patterns (e.g., Trendelenburg gait) as well as postural distortion patterns of scoliosis. And just as fascinating is to see the relationship between glute medius structure and function at the hip joint and compare it to the structure and function of the deltoid at the shoulder joint. Indeed, the gluteus medius can be described as the deltoid of the hip.
Brachialis – The First Muscle You Should Learn
Learn everything about the brachialis muscle — its attachments, open- and closed-chain functions, how to palpate, stretch, and massage it. The perfect muscle for teaching kinesiology biomechanics.
Piriformis – An Essential Muscle for Manual Therapists
Learn everything about the piriformis muscle — attachments, open- and closed-chain functions, piriformis syndrome, palpation, stretching, and massage techniques for manual therapists.
Brachioradialis – A Fascinating Study in Muscle Mechanics
Learn the brachioradialis muscle’s attachments, open- and closed-chain functions, palpation technique, and why it’s the ultimate example of a muscle that changes its joint action with joint position.
TFL: Anatomy, Functions, Palpation and Stretching
The tensor fasciae latae (TFL) is a hip flexor that is commonly tight, and strongly linked to lower crossed syndrome, and is a key target for massage and stretching.
Coracobrachialis: Attachments, Functions, Palpation & Treatment
The coracobrachialis is a muscle in the anterior compartment of the upper arm. It originates on the coracoid process of the scapula and inserts on the medial shaft of the humerus. It performs flexion and adduction at the glenohumeral joint and serves as a key teaching muscle for core kinesiology concepts including open-chain vs. closed-chain movement, cardinal-plane vs. oblique-plane motion, and anatomic vs. non-anatomic actions.
Muscle Anatomy Master Class (MAMC)
Muscle Anatomy Master Class (MAMC) is the most comprehensive and detailed muscle anatomy online video class in the world!
What is the “True” Function of the Gluteus Medius?
The major function of the gluteus medius is its “reverse” closed-chain action of pelvic depression at the hip joint to stabilize the pelvis when walking.
Psoas Major Function: Spinal Joint Actions – Frontal and Transverse Planes
The frontal plane spinal action of the psoas major is fairly clear; it crosses the spinal joints laterally, so it lateral flexes the spine to that side.









