Shoulder Joint Anatomy
This joint is classified as a ball-and-socket, allowing a wide range of movement in multiple directions.
What is the shoulder joint?
This movement at the elbow decreases the angle between the forearm and upper arm.
What is flexion?
This large, basin-shaped structure forms the base of the spine and helps support body weight.
What is the pelvis?
This movement involves bending the elbow to bring the hand closer to the mouth, commonly used when eating or drinking.
What is elbow flexion?
This type of joint allows the wrist to move in multiple directions, including flexion, extension, and deviation.
What is a condyloid joint?
This muscle is the primary abductor of the shoulder, enabling the arm to move outward
This muscle is the primary mover for elbow flexion and also assists in forearm supination.
What is the biceps brachii?
This movement involves the pelvis tilting forward, increasing the curve in the lower back.
What is anterior pelvic tilt?
This condition is caused by the compression of the median nerve at the wrist and is commonly treated with a neutral wrist splint.
What is carpal tunnel syndrome?
These two carpal bones articulate with the radius, forming the primary articulation of the wrist joint.
What are the scaphoid and lunate?
These four muscles work together to stabilize the shoulder joint and allow rotational movement.
What are the rotator cuff muscles?
These movements describe rotating the forearm so the palm faces either up or down.
What are supination and pronation?
These muscles work together to stabilize the pelvis and are crucial during activities like walking or standing on one leg.
What are the hip abductors?
These muscles, part of the rotator cuff, are essential for stabilizing the shoulder joint during arm movements.
What are the supraspinatus, infraspinatus, teres minor, and subscapularis?
This movement allows the thumb to touch the tips of each finger, a key function for grasping small objects.
What is opposition?
This structure deepens the glenoid cavity and provides additional stability to the shoulder joint.
What is the labrum?
This group of muscles extends the elbow, allowing for straightening of the arm.
What are the triceps?
This ligament connects the pelvis to the femur, supporting the hip joint and limiting excessive movement.
What is the iliofemoral ligament?
This wrist movement, which moves the hand toward the pinky side, is often paired with forearm pronation in daily activities like turning a key.
What is ulnar deviation?
These joints, found in the fingers, are responsible for bending and straightening each finger and are named based on their location.
What are the proximal interphalangeal (PIP) and distal interphalangeal (DIP) joints?
A patient presents with pain when raising their arm overhead. This rhythm, involving a 2:1 ratio, describes the coordinated movement between the scapula and humerus during shoulder elevation.
What is scapulohumeral rhythm?
After a fall, patients struggle to extend their elbow fully. This nerve might be compromised, affecting elbow extension and wrist drop.
What is the radial nerve?
A patient demonstrates excessive anterior pelvic tilt, causing strain on the lower back. Strengthening these muscles can help correct the tilt and improve posture.
What are the abdominal and gluteal muscles?
During a gripping action, this muscle group stabilizes the wrist to prevent excessive movement, allowing for a stronger grip.
What are the wrist extensors?
This repetitive strain condition affects the tendons in the thumb and is commonly seen in activities that involve gripping or pinching.
What is De Quervain’s tenosynovitis?