Category Archives: Musculoskeletal Imaging

Foot Oblique
4
Feb

Overview

The oblique foot radiograph rotates the foot to separate metatarsal heads and reveal fracture lines. This projection improves visualization of the cuboid and navicular bones. It is routinely obtained with AP and lateral views for complete assessment.

Technique

Rotate the foot approximately 30 to 45 degrees and center the detector to the mid foot. Use tight collimation and a small focal spot for optimal detail. Immobilize the foot and ensure consistent rotation for follow up comparisons.

Clinical Indications

Oblique foot views are indicated for trauma and suspected occult fractures. They help visualize the tarsometatarsal joints and lateral column. Correlate with clinical findings and consider CT for complex injuries.

Image Assessment

Inspect cortical continuity and joint alignment and evaluate for small intra articular fragments. Assess the cuboid navicular and cuneiform bones for injury. Report findings relevant to orthopedic or podiatric management.

Calcaneus Axial
4
Feb

Overview

The axial calcaneus radiograph images the calcaneal body and subtalar joint to detect fractures and joint involvement. The beam is angled cephalad to project the calcaneus free of superimposition. This view is essential for suspected calcaneal injury after axial load trauma.

Technique

Position the patient supine or prone and angle the tube approximately 40 degrees cephalad to the plantar surface. Center the detector to the calcaneus and include the subtalar joint. Immobilize the foot to reduce motion artifact.

Clinical Indications

Axial calcaneus is indicated for trauma heel pain and suspected intra articular fractures. It complements lateral views for comprehensive assessment. CT is often used for detailed evaluation and surgical planning.

Image Assessment

Evaluate calcaneal height width and posterior facet integrity. Inspect for comminution and subtalar joint involvement. Document fracture pattern and recommend CT for operative planning when indicated.

Toes AP
4
Feb

Overview

The AP toes radiograph evaluates phalanges and metatarsal bases for fractures and dislocations. The toes are placed flat on the detector with slight separation. This targeted view provides high resolution assessment of small bone injuries.

Technique

Center the detector to the affected toes and collimate tightly to reduce dose. Use a small focal spot and appropriate exposure for fine detail. Immobilize the toes and use positioning aids for comfort.

Clinical Indications

AP toes are indicated for trauma localized pain and suspected fracture or dislocation. They help detect tuft fractures and joint subluxations. Additional oblique and lateral views complement the AP projection.

Image Assessment

Inspect cortical margins for fracture lines and evaluate joint spaces for subluxation. Look for foreign bodies and soft tissue swelling. Report findings and recommend follow up imaging if healing assessment is required.

Knee Lateral
4
Feb

Overview

The lateral knee radiograph profiles the femorotibial joint patella and soft tissues to assess effusion and fractures. The knee is flexed approximately 20 to 30 degrees for optimal visualization. This view is essential for trauma and preoperative evaluation.

Technique

Position the patient in true lateral with femoral condyles superimposed and the knee flexed. Center the detector to the joint and include the distal femur and proximal tibia. Use appropriate exposure and immobilize the limb.

Clinical Indications

Lateral knee is indicated for trauma suspected patellar fracture and evaluation of joint effusion. It complements AP and skyline views for comprehensive assessment. MRI is used for soft tissue evaluation when indicated.

Image Assessment

Evaluate patellar position and trochlear groove alignment and inspect for cortical disruption. Assess joint effusion and soft tissue swelling. Document findings relevant to orthopedic management.

Elbow AP
4
Feb

Overview

The AP elbow radiograph evaluates the distal humerus proximal radius and ulna. The patient extends the elbow with the palm up to obtain a true AP projection. This view is essential for detecting fractures and joint effusion.

Technique

Center the detector to the elbow joint and ensure the humeral epicondyles are parallel to the detector. Use appropriate exposure and immobilize the limb to reduce motion. Include the distal humerus and proximal forearm in the field.

Clinical Indications

AP elbow is indicated for trauma pain and limited range of motion. It helps detect supracondylar fractures radial head injuries and joint effusions. Additional lateral and oblique views complement the AP projection.

Image Assessment

Assess cortical continuity and joint alignment and look for fat pad signs indicating occult fracture. Evaluate the radial head neck and coronoid process for injury. Correlate with clinical findings and consider CT for complex fractures.

Elbow Lateral
4
Feb

Overview

The lateral elbow radiograph profiles the olecranon and distal humerus to assess alignment and displacement. The elbow is flexed 90 degrees with the forearm in neutral. This view is sensitive for detecting displaced fractures and joint effusion.

Technique

Position the elbow in true lateral with the humeral epicondyles superimposed. Use a short exposure time to minimize motion blur and include the distal humerus and proximal forearm. Ensure consistent positioning for follow up comparisons.

Clinical Indications

Lateral elbow is indicated for trauma suspected dislocation and evaluation of joint congruity. It helps identify olecranon fractures and posterior displacement. Correlate with AP and oblique views for comprehensive assessment.

Image Assessment

Evaluate the anterior humeral line and radiocapitellar alignment for pediatric fractures. Inspect the olecranon process and coronoid for cortical disruption. Document displacement and recommend orthopedic consultation when indicated.

Wrist PA
4
Feb

Overview

The PA wrist radiograph evaluates carpal bones distal radius and ulna for fractures and degenerative change. The patient places the palm flat on the detector with the wrist in neutral. This view is the foundation for wrist imaging and guides further projections.

Technique

Center the detector to the mid carpal region and ensure the wrist is flat without rotation. Use appropriate collimation to include the distal forearm and proximal metacarpals. Immobilize the hand to reduce motion artifact.

Clinical Indications

PA wrist is indicated for trauma pain and suspected scaphoid or distal radius fractures. It assesses carpal alignment and joint space narrowing. Additional oblique and lateral views complement the PA projection.

Image Assessment

Inspect cortical margins for fracture lines and evaluate carpal spacing and alignment. Look for signs of scapholunate dissociation and degenerative changes. Recommend targeted views or CT for occult injuries.

Wrist Lateral
4
Feb

Overview

The lateral wrist radiograph assesses sagittal alignment of the carpus and distal radius. The hand is positioned in true lateral with the thumb side up. This view is important for evaluating dorsal or volar displacement and carpal instability.

Technique

Align the wrist so the radius and ulna are superimposed on the lateral projection. Use consistent positioning and include the distal forearm and metacarpals. Immobilize the hand to minimize motion and ensure reproducibility.

Clinical Indications

Lateral wrist is indicated for trauma suspected dislocation and assessment of carpal alignment. It complements PA and oblique views for comprehensive wrist evaluation. It is useful in preoperative planning and follow up.

Image Assessment

Assess dorsal and volar displacement of fractures and evaluate carpal height and alignment. Look for perilunate and lunate dislocations. Correlate with clinical findings and consider CT for complex injuries.

Wrist Scaphoid View
4
Feb

Overview

The scaphoid view positions the wrist in ulnar deviation to elongate the scaphoid and improve fracture detection. It is obtained when scaphoid injury is suspected despite normal standard views. Early detection prevents non union and long term dysfunction.

Technique

Ask the patient to ulnar deviate the wrist and center the detector to the scaphoid waist. Use a slight cranial tube angle if needed to profile the scaphoid. Immobilize the wrist and minimize motion during exposure.

Clinical Indications

Scaphoid view is indicated for snuffbox tenderness and suspected scaphoid fracture. It complements PA and lateral views and may be followed by dedicated CT or MRI if radiographs are inconclusive. Early immobilization is recommended when clinical suspicion is high.

Image Assessment

Inspect the scaphoid waist and proximal pole for cortical disruption and sclerosis. Evaluate for associated radial styloid fractures and carpal instability. Report findings and recommend further imaging if needed.

Hand PA
4
Feb

Overview

The PA hand radiograph evaluates phalanges metacarpals and carpometacarpal joints for fractures and arthritis. The palm is placed flat on the detector with fingers extended. This view is standard for hand trauma and chronic disease assessment.

Technique

Center the detector to the third metacarpal and ensure fingers are parallel and separated slightly. Use appropriate exposure and immobilize the hand to reduce motion. Include the distal forearm when indicated for wrist pathology.

Clinical Indications

PA hand is indicated for trauma deformity and suspected infection or arthritis. It helps detect fractures dislocations and erosive changes. Additional oblique and lateral views provide complementary information.

Image Assessment

Evaluate cortical continuity joint spaces and alignment of the metacarpals and phalanges. Look for subluxation and periarticular erosions in inflammatory disease. Document findings relevant to surgical or conservative management.