Forearm & Elbow

• Radius - lateral side
• Ulna - medial side
• What are the bones in the forearm classified as ?

  Long bones
• Each bone has one body and two articulations
• Ulna

  Olecranon Process - anteriorly and inferiorly concaving proximal process ; proximally forms trochlear notch
• Ulna

  Coronoid Process - distal anterior projecting process .
• 
  

  Radial Notch - a depression on the lateral aspect of the coronoid process .
• Ulna

  Ulnar Styloid Process - narrow , conic projection on the posteriomedial aspect .
• 
  

  Radial Tuberosity - roughened process on the medial side of the radial body .
• 
  

  Radial Styloid Process - conic projection on the lateral surface of the distal end of the radius .
• Humeral Condyle - entire distal end of humerus
• What parts make up Humeral condyle ?

  Trochlea , Capitulum , Medial and Lateral Epicondyle
• Trochlea - on the distal end of the humerus on the medial side .
• Capitulum - on the distal end of the humerus on the lateral side .
• Coronoid Fossa - a shallow depression on the anterior surface superior to the trochlea .
• Radial Fossa - receives the radial head when elbow flexed; lateral to coronoid fossa and proximal to capitulum
• Olecranon Fossa - deep depression immediately behind coronoid fossa ; accommodates olecranon process when elbow extended .
• What are the three joints of the elbow ?

  Proximal Radioulnar Articulation

  Humeroradial joint

  Humeroulnar joint
• Trochlea > Ulna
• Capitulum > Radius
• What two fat pads are only shown naturally on a lateral projection ?

  Anterior and Supinator fat pads
• What fat pad would you see in a lateral if a facture/ abnormality is indicated ?

  Posterior fat pad
• Bursitis - inflammation of bursa
• Dislocation - displacement of bone from joint space
• Gout - hereditary form of arthritis in which uric acid is deposited in joints .
• Joint Effusion - accumulation of fluid in joint associated with underlying condition .
• Osteoarthritis - form of arthritis marked by progressive cartilage deterioration in synovial joint and vertebrae .
• What is the patient position in a AP Forearm ?

  Seated near table
• Where is the IR in a AP Forearm ?

  Along the long axis parallel with forearm .
• What position is the hand supposed to be in during a AP Forearm ?

  Supinated
• What is the position of the elbow during an AP Forearm ?

  Extended elbow with dorsal surface against IR .
• Supinated = palm faced up
• What are supposed to always do when doing a forearm or elbow x-ray ?

  Shield Gonads
• Medial Epicondyle


  What is A?

  
• Trochlea (medial)


  What is B?

  
• Coronoid tubercle


  What is C?

  
• Radial head


  What is D?

  
• Capitulum


  What is E?

  
• Lateral epicondyle


  What is F?

  
• Olecranon process


  What is H?