Exam 2 Ligaments Flashcards
GH (glenohumeral) Ligaments
Coracohumeral
Superior GHL
Middle GHL
Inferior GHL
Transverse humeral
Superior transverse scapular
Coracohumeral
Greatest stiffness
Superior GHL
Limits inferior translation and external rotation
Middle GHL
Limits anterior translation
Inferior GHL
“Hammock”
Prevents the humeral head from dislocating anteriorly or inferiorly
Transverse humeral
Keeps tendon of long head of biceps in intertubercular groove
Superior transverse scapular
Bridges suprascapular notch to form a foreman
SC (stenoclavicular) ligaments
Anterior SCL
Posterior SCL
Costoclavicular
Interclavicular
Anterior and Posterior SCLs
Limits excessive anterior and posterior motion
Costoclavicular
Limits clavicular elevation and superior glide
Interclavicular
Limits excessive depression downward glide
AC (acromioclavicular) ligaments
Acromioclavicular
Coracoacromial
Coracoclavicular
Acromioclavicular
Stabilizes AC joint
Coracoacromial
Roof of subacromial space, cut during surgery
Protects the head of the humerus during abduction with the acromion and coracoid process
Coracoclavicular
Trapezoid = most lateral, guides clavicle during rotation
Conoid = triangular shape, prevents vertical displacement
Elbow ligaments
Radial collateral (RCL)
Ulnar collateral (UCL)
Anular
Quadrate
Oblique cord
Radial collateral (RCL)
Limits active adduction/varus, 1 band
Ulnar collateral (UCL)
Limits active abduction/ valgus
3 bands = anterior, posterior, oblique
Angular
Keeps radial head in place
Quadrate
Keeps radial head in place
Oblique cord
Limits distal inferior motion of radius (“pulled elbow”)
Wrist ligaments
Volar/ dorsal radioulnar
Radial collateral
Ulnar collateral
Volar/dorsal radioulnar
Stabilize distal radioulnar joint, part of TFCC
Radial collateral
From radius to trapezium; limits excessive ulnar deviation
Ulnar collateral
From ulna to triquetrum; limits excessive radial deviation
Thumb ligaments
Ulnar collateral
Ulnar collateral
Stabilizes base of thumb ( injured with gamekeeper’s or skier’s thumb)
