Chapter 04

Q40: Where is the CR placed for a PA projection of the third digit?

At the proximal interphalangeal joint

Q41: A skiers thumb is an injury of the

Ulnar collateral ligament

Q42: Infection of bone or bone marrow caused by bacteria introduced by trauma or surgery is termed

Osteomyelitis

Q43: The second most common type of primary cancerous bone tumor is

Osteogenic sarcoma

Q44: The most common primary cancerous bone tumor is

Multiple myeloma

Q45: From a pronated position, required for a PA oblique of the fourth digit

45° lateral rotation

Q46: Why perform PA oblique with medial rotation for the second digit

Minimizes object image receptor distance OID

Q47: Where is the CR centered for a PA projection of the hand

At the third metacarpophalangeal joint

Q48: Why keep phalanges parallel to the IR for a PA oblique hand

Prevents foreshortening of phalanges and obscuring of interphalangeal joints

Q49: Anatomy better visualized with a fan lateral of the hand

Phalanges

Q50: Best projection for first carpometacarpal joint and trapezium

AP axial modified Roberts method

Q51: Wrist projection that best demonstrates wrist joint and intercarpal spaces

AP

Q52: CR placement for AP axial modified Roberts method of the thumb

First carpometacarpal joint

Q53: CR angle for modified Roberts method

15° proximally toward the wrist

Q54: Rotation of humeral epicondyles for AP medial oblique elbow

45°

Q55: Hand rotation for AP oblique bilateral Norgaard method

45° internally

Q56: Wrist projection that opens interspaces on the ulnar side

Radial deviation

Q57: CR angulation for tangential inferosuperior carpal sulcus canal

25° to 30°

Q58: Wrist projection ideal for calcification in dorsal aspect of carpals

Carpal bridge

Q59: Action that leads to proximal radius crossing over ulna

Pronation of the hand

Q60: Purpose of AP partially flexed projections of the elbow

Provide an AP perspective if the patient cannot fully extend the elbow

Q61: Elbow projection showing radial head and tuberosity free of superimposition

AP oblique with external rotation

Q62: Elbow projection best showing olecranon process in profile

Lateral

Q63: Basic elbow projection best showing trochlear notch in profile

Lateral

Q64: Alignment of humeral epicondyles for lateral elbow

Perpendicular to image receptor

Q65: Radius superimposed over ulna and coronoid in profile indicates projection

Medial internal rotation oblique

Q66: Routine elbow projection best for elevated posterior fat pad

True lateral with 100° flexion

Q67: Only difference among radial head lateromedial projections

Position of the hand and or wrist

Q68: Best demonstrates radial head with trauma lateral Coyle method

Elbow flexed 100°, CR 45° toward shoulder

Q69: How many projections for AP acute flexion study of the elbow

Two

Q70: Region to radiograph for a Smith fracture

Wrist and forearm

Q71: PA oblique hand shows 4th and 5th metacarpal midshafts superimposed, error

Excessive lateral rotation

Q72: PA hand cuts off distal radius ulna and carpals, correction

Repeat PA to include all carpals and about 1 inch of distal radius and ulna

Q73: AP elbow shows complete separation of proximal radius and ulna, error

Excessive lateral rotation

Q74: Carpal canal view shows hamular process over pisiform, correction

Rotate wrist and hand 10° internally

Q75: AP oblique elbow with medial rotation shows radial head over coronoid, error

Excessive medial rotation

Q76: Routine to confirm possible Bennetts fracture

Thumb

Q77: Patient cannot assume ulnar deviation for scaphoid, position

Modified Stecher

Q78: Postreduction with fiberglass cast original 60 kV, select

63 kV

Q79: Possible elbow dislocation with elbow flexed more than 100°, routine

Partially flexed AP and limited lateral

Q80: Partially flexed elbow with possible coronoid fracture, confirm

Coyle with 80° flexion CR 45° away from shoulder

Q81: Best projection to rule out abnormal calcifications in carpal sulcus

Gaynor Hart method

Q82: AP oblique bilateral hands ball catchers position evaluates early

Rheumatoid arthritis

Q83: PA scaphoid shows extensive superimposition of scaphoid and carpals cause

Insufficient ulnar deviation

Q84: Lateral elbow shows about half radial head superimposed by coronoid

No positioning errors

Q85: Confirm UCL injury of wrist near thumb with negative basic thumb

Folio method

Q86: Metal foreign body in palm, hand routine to confirm location

PA and lateral in extension

Q87: Additional projection to show coronoid in profile in a child

Radial head lateral projections