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MSK 1. C-Spine, Shoulder, Elbow, Wrist, Hand

Cervical Spine

C-spine Landmarks

(a) Trapezius muscles (b) External occipital protuberance. (c) Paraspinal muscles. (d) C7 spinous process.
(a) Inferior angle of scapula. (b) Spine of Scapula.

Inspection

Inspect the neck and shoulders posteriorly, observing for symmetry of shoulder height and musculature, especially the trapezius.

Palpation

Palpate rom the occipital protuberance to C7, observing for pain or tenderness of the spinal column or paraspinous muscles.

Range of motion:

Assess active range of motion

  • Flexion (normal is 80 to 90 degrees)
  • Extension (normal is 70 degrees)
  • Lateral rotation (normal is 90 degrees)
  • Side bending (normal is 20 to 40 degrees)

Strength and neurovascular testing:

Cervical radiculopathy can affect one or more levels of the cervical spine, with characteristic patterns of weakness, numbness and reflex changes based on the levels that are affected.

To assess for compression of nerve roots or spinal cord, test

  • Strength: Abduction of the shoulder, flexion and extension of the elbow, flexion and extension of the wrist, flexion, abduction and adduction of the fingers.
  • Reflexes: Biceps, triceps, and brachioradialis
  • Sensation: Key sensor points below

An examiner performing Spurling's test
Spurling’s test. If you are concerned about cervical radiculopathy, perform Spurling’s Test The patient’s neck is extended and laterally rotated slightly, then an axial load is placed on the head by the examiner.Pain, numbness or tingling recreated in the upper extremity is considered a positive test and supports a diagnosis of a cervical radiculopathy

Benchmark Exam: Shoulder

Inspection

  • Anterior, lateral and posterior shoulder

Palpation

  • Palpate systematically, noting warmth, deformity, swelling and tenderness:
    • Sternoclavicular joint
    • Clavicle
    • Acromioclavicular (AC) joint
    • Biceps tendon in the bicipital groove
    • Subacromial space and rotator cuff:
      • Supraspinatus tendon
      • Infraspinatus tendon
      • Teres minor
      • Subscapularis insertion
    • Scapula
    • Coracoid process

Range of motion  

  • Flexion, also called forward elevation
  • Abduction
  • Internal and external rotation

Strength Testing  

  • Flexion/forward elevation and extension
  • Abduction and adduction
  • Internal and external rotation

Stability and Special Tests (as directed by DDx)

  • If you suspect rotator cuff dysfunction: 
    • Perform targeted strength testing of rotator cuff muscles:
      • Empty can test
      • Lift off test
    • Assess for bursitis or impingement
      • Neer test
      • Hawkins test

Shoulder Landmarks

Right Shoulder– Anterior view Right Shoulder– Lateral view Right Shoulder– Posterior view
(a) Pectoralis Major Muscle. (b) Long Head Biceps Tendon. (c) Deltoid. (d) Acromion. (e) AC Joint. (f) Clavicle. (g) SC Joint.
(a) Deltoid. (b) Spine of Scapula. (c) Clavicle.
(a) Trapezius. (b) Spine of Scapula. (c) Acromion. (d) Deltoid. (e) Inferior Angle of Scapula.

Inspection

Assess for symmetry, swelling, trauma or erythema of the anterior, lateral and posterior shoulder.

Palpation

Palpate the shoulder systematically, starting with the sternoclavicular joint and moving systematically, from anterior to lateral to posterior.

    • Sternoclavicular joint
    • Clavicle
    • Acromioclavicular (AC) joint
    • Biceps tendon in the bicipital groove
    • Coracoid process is the origin of the short head of the biceps
    • Subacromial space and rotator cuff:
      • supraspinatus tendon lies just below the anterior lateral acromion
      • infraspinatus tendon lies just below posterolateral acromion
      • teres minor lies just inferior to the infraspinatus
      • subscapularis insertion lies just lateral to coracoid at the anterior shoulder
    • Scapula:
      • spine of the scapula  is the origin of the infraspinatus

Range of motion

Assess active and passive ROM in each plane: flexion, abduction, internal and external rotation.  If range of motion is limited, note whether it is limited by pain or “true” restriction.  Adhesive capsulitis, glenohumeral osteoarthritis and dislocation limit or cause pain with both active and passive ROM.  Injury of muscles or ligaments such as rotator cuff tendonitis affect active more than passive ROM. Increased ROM of the shoulder suggests ligamentous laxity or prior dislocations.

You can also assess the shoulder with simple functional tests.

  • Internal rotation and adduction:  Ask your patient to reach up behind the back to touch the highest point on the spine that they can.  This tests internal rotation and adduction. Normal shoulder ROM is to reach up to T10 (count down from T7 at the lower border of the scapula or up from L4 at the level of the iliac crest).
  • External rotation and abduction:  Ask your patient to reach as far down behind their head as they can to touch the spine.  This tests external rotation and abduction. Normal shoulder ROM is to reach down to T1 (below C7, the prominent bump at the base of the neck)

Strength testing

With your patient seated, test strength of shoulder flexion, extension, abduction, adduction, internal and external rotation, grading each movement on the 0-5 scale. If you suspect long thoracic nerve injury, you can test subscapularis strength by asking your patient to perform a ‘mini-push up’ against the wall and observing for scapular winging.

Stability & special testing

Targeted testing of rotator cuff muscles

Rotator cuff disorders include tendinitis, tear, subacromial bursitis, and impingement syndromes.  Different examiners prefer different special tests when rotator cuff pathology is suspected. You will practice those with the strongest evidence base in FCM.

The rotator cuff is made up of the 4 ‘SITS’ muscles. Targeted strength testing of these muscles may reveal pain, which suggests tendinitis, or weakness, which supports a rotator cuff tear.

  • Supraspinatus: abduction from 0 to 90 degrees
  • Infraspinatus: external rotation
  • Teres Minor: external rotation
  • Subscapularis: internal rotation

Lift-off test

The lift-off test assesses the subscapularis muscle.

With the shoulder fully internally rotated, the patient attempts to lift their hand away from the back as the examiner applies pressure to the forearm.

Pain with this maneuver supports tendinitis while weakness suggests a subscapularis tear.

 

Empty can test

Image of the empty can testThe empty can test isolates the supraspinatus muscle.The shoulder is held in 80 degrees of flexion, 45 degrees of abduction and full internal rotation as if emptying a can of soda. Downward pressure is placed on the arm as the patient resists.

Pain with this maneuver supports tendinitis while weakness suggests a supraspinatus tear

Special tests for rotator cuff impingement

The rotator cuff tendons occupy a narrow space between the acromion and the head of the humerus. Impingement, or pinching, of the tendons between these two structures is a common cause of shoulder pain. Pain with the Neer or Hawkins/Kennedy test, both of which narrow the space even further, support a diagnosis of rotator cuff impingement, which is usually caused by swelling of the tendons or bursa.

Image demonstrating Neer test, with the examiner flexing and abducting the shoulder.
Neer Test. With the examiner’s hand stabilizing the scapula, the shoulder is guided through full flexion and abduction.
Image of the Hawkins Kennedy test
Hawkins/Kennedy test. The shoulder is held at 90 degrees of abduction with the elbow flexed, as if a hawk were perched on the arm. The examiner then internally rotates the shoulder.

 

 

 

 

 

 

 

 

 

 

Elbow

Elbow Landmarks

Right elbow – Anterior view
(a) Lateral epicondyle. (b) Distal biceps tendon. (c) Medial epicondyle.
Right elbow– Lateral view
(a) Lateral joint recess. (b) Olecranon. (c) Lateral epicondyle. (d) Radial head.
Right elbow– Posterior view
(a) Ulnar nerve. (b) Lateral epicondyle. (c) Olecranon.

Inspect: Dorsal, lateral and ventral elbow

Palpate: affected area, observing for tenderness and swelling.

Range of motion: Flexion (140°)​, extension (10°), supination (80°) , p​ronation (80°)

Strength testing: Extension, flexion, supination, pronation

Valgus stress on the elbowStability testing of the ulnar and radial collateral ligaments is performed with the patient seated and the elbow extended to both zero and thirty degrees. Make note of pain or laxity with valgus or varus stress. Compare to the asymptomatic side.

        • Ulnar (medial) collateral ligament: Place valgus stress on the elbow by applying pressure to the lateral elbow with one of your hands and with the other hand, pushing the patient’s forearm laterally (image at left)
        • Radial (lateral) collateral ligament: Place varus stress on the elbow by applying pressure to the medial elbow with one hand on the medial elbow while pushing the patient’s forearm medially

Wrist & Hand

Landmarks

Right wrist and hand – Dorsal view Right wrist and hand– Palmar view
(a) Ulnar styloid. (b) Distal radius. (c) Anatomic snuffbox.
(a) Carpal tunnel. (b) Radial artery. (c) Ulnar artery. (d) Hook of the hamate.

Inspect and palpate the dorsal and palmer wrist and hand, focusing on the symptomatic area.

Range of motion of the wrist:

  • Flexion: 75°
  • Extension: 75°
  • Ulnar deviation: 40°
  • Radial deviation: 20°

Range of motion of the hand:

  • DIP/PIP Flexion: 90 °
  • DIP/PIP Extension: 0°
  • MCP Flexion: 90°
  • MCP Extension: 5 to -10 °

Stability and Special tests

Stability testing of the ulnar collateral ligament of the thumb.

Each metacarpophalangeal and interphalangeal joint has both ulnar and radial collateral ligaments. The UCL of the thumb is commonly injured (skier’s or gamekeeper’s thumb) which can lead to significant morbidity if not treated properly. To assess UCL stability, hold the thumb flexed 45 degrees towards the palm and apply valgus stress to the proximal phalanx. Compare the degree of laxity and firmness of the endpoint to the opposite side.

Image of Finkelstein's test for DeQuervain's tenosynovitis

Finkelstein’s test for DeQuervain’s tendinitis

The thumb is held in patient’s palm and the examiner moves the hand and wrist into ulnar deviation, which stresses the first dorsal compartment of the wrist.

Pain with ulnar deviation is considered a positive test

 

Tests for Carpal Tunnel Syndrome

Phalen's test.Phalen’s test

  • Hands are pressed together forcing both wrists into flexion and compressing the carpal tunnel
  • Pain, numbness, tingling the distribution of the median nerve indicates a positive test for carpal tunnel syndrome

Tinel’s testTinel's test

  • Examiner uses the thumb to compress the carpal tunnel
  • An alternative method is to tap the middle finger repeatedly over the carpal tunnel
  • Pain, numbness, tingling the distribution of the median nerve indicates a positive test for carpal tunnel syndrome

 

Knowledge check

After reviewing this chapter, what connections are you making with the anatomy and conditions that you have learned about in the MSK block? What anatomy and exam findings are still confusing?

License

The Foundations of Clinical Medicine Copyright © by Karen McDonough. All Rights Reserved.

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