WEEK 5 - Humerus, Clavicle

HUMERUS CP

mid humerus

Respiration HUM

suspend

Structures Included for HUM

• elbow joint → shoulder joint

• surrounding ST

Alignment of HUM

LA of HUM // to IR and colli

• but often the part and colli will be aligned but askew to IR

Rotation of AP HUM

Proximal

• GT projected LAT

• LT between GT and HH

Distal

• epicondyles in profile, no rot.

• 1/8 SI of ulna and radius (like an AP elbow)

  • SI of radial head, tub; neck just touching

F/E of AP HUM

no waist F/E = SI of ~1/2 acromion and hum

diff between MEDLAT and LATMED HUM

*whatever part is further away from IR will be displaced distally*

medlat

• will have flipped marker

• radius and ulna sep prox/dist

latmed

• radius and ulna SI

Rotation of MEDLAT HUM

Humeral Rot.

• LT in profile medially

Elbow Rot. (optimal lat elbow)

• cap and troch SI ant/post

• open elbow joint

• ulna is distal from the radius due to diverging beam

F/E of MEDLAT HUM

elbow

• flexed at 90degrees

waist

• SSA is SI or slightly superior to clavicle

Humerus // to IR - MEDLAT HUM

rad head and coronoid almost SI prox/dist (slight sep due to beam divergence)

AP CLAVICLE CP

mid clavicle

alignment of CLAVICLE

• spine // to SA of IR

• midcoronal plane // LA of IR

rotation of AP CLAVICLE

no torso rot

• lat ½ scap SI on thorax

• med clav adj to lat vertebral border

  • SP mid VB

  • SCJ equidistant

F/E of AP CLAVICLE

mid clav SI the SSA

• SSA superior = flexion

• SSA inferior = extension

AXIAL AP CLAV - CP

2.5 cm inferior to mid clav

CR for AXIAL AP CLAV

15-30 degrees cephalad

BTP for AXIAL AP CLAV

• medial end of clav SI rib 1-3

• LAT 2/3 of clav free of any SI

• clav bow upward slightly

rotation for AXIAL AP CLAV

torso rot (same as AP CLAV)

• clav bowing upwards

• med clav adj to lat vertebral border

  • SP mid VB

  • SCJ equidistant