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 HUM head

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

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 more ant. to ulna

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

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 next to lat vertebral border

  • rot towards the affected side = clav S-shape, greater space between spine and clav

  • rot away from the affected side = less space / SI of spine and clav

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 1st, 2nd, or 3rd ribs

• LAT 2/3 of clav projected superior to thorax and scapula

• clav bow upward slightly

rotation for AXIAL AP CLAV

torso rot (same as AP CLAV)

• medial end of clav next to lat vertebral border

• rot towards the affected side = clav S-shape, greater space between spine and clav

• rot away from the affected side = less space / SI of spine and clav