Systems
Bones respond and adapt to the stresses placed on them
What is Wolff's Law?
Acceleration is proportional to force and inversely proportional to mass.
What is Newton's second law of motion?
Between the 2nd and 7th rib
What is the position of the scapula in the frontal plane?
The joint where the sacrum meets the ilium
What is the sacroiliac joint?
Landmarks at the hip that should be level to indicate symmetry in the frontal plane.
What are the iliac crests/ASISs?
A muscle’s ability to return to its original shape after being stretched
What is elasticity?
The ability to maintain equilibrium
What is stability?
Pronation and supination happen here
What happens at the proximal radioulnar joint?
Ligaments that prevent anterior and posterior translation of the tibia.
What are the ACL and PCL?
The spinal position that results in the lowest disc pressure
What is lying supine?
In this position, a joint is most congruent and stable
What is close-packed position?
The ground pushing back against a sprinter’s foot is this type of force.
What is ground reaction force?
What are the symptoms seen with Carpal Tunnel Syndrome?
120–135 degrees
What is the normal range for the angle of inclination at the hip?
The distance between two successive steps of opposite feet
What is step length?
Proprioceptors located within muscles and detect stretch
What are muscle spindles?
In a bicep curl, the elbow joint acts as this in the lever system
What is the axis?
Injury from a fall on an outstretched hand which presents with dorsal displacement of the distal radius
What is a Colle's fracture?
The movement that produces the greatest force at the hip joint
What is hip extension?
During a forward sway, these muscles act eccentrically to stabilize the body
What are the gastrocnemius and soleus?
The end-feel commonly felt in elbow flexion
What is characterized as "soft"?
All five factors that influence stability and mobility
What are the size of the BOS, height of COG, line of gravity relative to BOS, body mass, and friction?
The two extensor tendons making up the anatomical snuffbox
What are extensor pollicis longus and extensor pollicis brevis tendons?
The structures that are injured with the "unhappy triad"
What are the ACL, MCL, and medial meniscus
60%
What percentage of the gait cycle is spent in the stance phase?