Closed and Loose Packed Positions Quiz
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Questions and Answers

What is the closed packed position of the facet joint (spine)?

  • Extension (correct)
  • Neutral position
  • Midway between flexion and extension
  • Flexion

    • What is the loose packed position of the facet joint (spine)?

  • Midway between flexion and extension (correct)
  • Flexion
  • Extension
  • Neutral position

    • What is the loose packed position of the TMJ?

    Mouth slightly open (freeway space)

    What is the closed packed position of the TMJ?

    <p>Clenched teeth</p> Signup and view all the answers

    What is the loose packed position of the glenohumeral joint?

    <p>55 degrees abduction, 30 degrees horizontal adduction (scapular plane)</p> Signup and view all the answers

    What is the closed packed position of the glenohumeral joint?

    <p>Abduction and lateral rotation</p> Signup and view all the answers

    What is the loose packed position of the AC joint?

    <p>Arm resting by side in normal physiological position</p> Signup and view all the answers

    What is the closed packed position of the AC joint?

    <p>90 degrees abduction</p> Signup and view all the answers

    What is the loose packed position of the humeroulnar joint?

    <p>70 degrees flexion, 10 degrees supination</p> Signup and view all the answers

    What is the closed packed position of the humeroulnar joint?

    <p>Extension</p> Signup and view all the answers

    What is the loose packed position of the radiohumeral joint?

    <p>Full extension, full supination</p> Signup and view all the answers

    What is the closed packed position of the radiohumeral joint?

    <p>Elbow flexed to 90, forearm supinated to 5 degrees</p> Signup and view all the answers

    What is the loose packed position of the proximal radioulnar joint?

    <p>70 degrees flexion, 35 degrees supination</p> Signup and view all the answers

    What is the closed packed position of the proximal radioulnar joint?

    <p>5 degrees supination</p> Signup and view all the answers

    What is the loose packed position of the distal radioulnar joint?

    <p>10 degrees supination</p> Signup and view all the answers

    What is the closed packed position of the distal radioulnar joint?

    <p>5 degrees supination</p> Signup and view all the answers

    What is the loose packed position of the radoiocarpal joint (wrist)?

    <p>Neutral and slight ulnar deviation</p> Signup and view all the answers

    What is the closed packed position of the radoiocarpal joint (wrist)?

    <p>Extension with radial deviation</p> Signup and view all the answers

    What is the loose packed position of the carpometacarpal joint?

    <p>Midway between abduction - adduction and flexion - extension</p> Signup and view all the answers

    What is the loose packed position of the metacarpophalangeal joint?

    <p>Slight flexion</p> Signup and view all the answers

    What is the closed packed position of the metacarpophalangeal joints (fingers)?

    <p>Full flexion</p> Signup and view all the answers

    What is the closed packed position of the metacarpophalangeal joint (thumb)?

    <p>Full opposition</p> Signup and view all the answers

    What is the loose packed position of the interphalangeal joints?

    <p>Slight flexion</p> Signup and view all the answers

    What is the closed packed position of the interphalangeal joints (hand)?

    <p>Full extension</p> Signup and view all the answers

    What is the loose packed position of the hip joint?

    <p>30 degrees flexion, 30 degrees abduction, slight external rotation</p> Signup and view all the answers

    What is the closed packed position of the hip joint?

    <p>Full extension, medial rotation</p> Signup and view all the answers

    What is the loose packed position of the knee joint?

    <p>25 degrees flexion</p> Signup and view all the answers

    What is the closed packed position of the knee joint?

    <p>Full extension, external rotation of the tibia</p> Signup and view all the answers

    What is the loose packed position of the talocrural (ankle) joint?

    <p>10 degrees plantar flexion, midway between maximum inversion and eversion</p> Signup and view all the answers

    What is the closed packed position of the talocrural (ankle) joint?

    <p>Maximum dorsiflexion</p> Signup and view all the answers

    What is the loose packed position of the subtalar joint?

    <p>Midway between extremes of range of motion</p> Signup and view all the answers

    What is the closed packed position of the subtalar joint?

    <p>Supination</p> Signup and view all the answers

    What is the loose packed position of the midtarsal joint?

    <p>Midway between extremes of range of motion</p> Signup and view all the answers

    What is the closed packed position of the midtarsal joint?

    <p>Supination</p> Signup and view all the answers

    What is the loose packed position of the tarsometatarsal joint?

    <p>Midway between extremes of range of motion</p> Signup and view all the answers

    What is the closed packed position of the tarsometatarsal joint?

    <p>Supination</p> Signup and view all the answers

    What is the loose packed position of the metarasophalangeal joint?

    <p>Neutral</p> Signup and view all the answers

    What is the closed packed position of the metarasophalangeal joint?

    <p>Full extension</p> Signup and view all the answers

    What is the loose packed position of the interphalangeal joints (foot)?

    <p>Slight flexion</p> Signup and view all the answers

    What is the closed packed position of the interphalangeal joints (foot)?

    <p>Full extension</p> Signup and view all the answers

    Study Notes

    Closed Packed Position

    • Achieved when joints are fully congruent, meaning they are in contact with each other.
    • Characterized by full tightness in surrounding ligaments.
    • Specific closed packed positions vary by joint, such as:
      • Facet joint (spine): extension
      • Glenohumeral joint: abduction and lateral rotation
      • AC joint: 90 degrees abduction
      • SC joint: maximum shoulder elevation
      • Humeroulnar joint: extension
      • Radiohumeral joint: elbow flexed to 90 degrees with forearm supinated to 5 degrees
      • Wrist (radoiocarpal joint): extension with radial deviation
      • Hip joint: full extension with medial rotation
      • Knee joint: full extension with external rotation of the tibia
      • Talocrural joint (ankle): maximum dorsiflexion
      • Subtalar joint: supination
      • Tarsometatarsal joint: supination
      • Metarasophalangeal joint: full extension
      • Interphalangeal joints (hand): full extension
      • Interphalangeal joints (foot): full extension

    Loose Packed Position

    • Results in minimal congruency, allowing significant space between joints.
    • Surrounding ligaments are in a relaxed or maximally lax state.
    • Specific loose packed positions include:
      • Facet joint (spine): midway between flexion and extension
      • TMJ: mouth slightly open (freeway space)
      • Glenohumeral joint: 55 degrees abduction and 30 degrees horizontal adduction
      • AC joint: arm resting by side in normal physiological position
      • SC joint: arm resting by side in normal physiological position
      • Humeroulnar joint: 70 degrees flexion and 10 degrees supination
      • Radiohumeral joint: full extension and full supination
      • Proximal radioulnar joint: 70 degrees flexion and 35 degrees supination
      • Distal radioulnar joint: 10 degrees supination
      • Wrist (radoiocarpal joint): neutral with slight ulnar deviation
      • Carpometacarpal joint: midway between abduction-adduction and flexion-extension
      • Metacarpophalangeal joint: slight flexion
      • Hip joint: 30 degrees flexion, 30 degrees abduction, and slight external rotation
      • Knee joint: 25 degrees flexion
      • Talocrural joint (ankle): 10 degrees plantarflexion, midway between maximum inversion and eversion
      • Subtalar joint: midway between extremes of range of motion (ROM)
      • Midtarsal joint: midway between extremes of ROM
      • Tarsometatarsal joint: midway between extremes of ROM
      • Metarasophalangeal joint: neutral
      • Interphalangeal joints (foot): slight flexion

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    Description

    Test your knowledge on the concepts of closed packed and loose packed positions in joint mechanics. This quiz covers definitions, characteristics, and specific examples related to joint congruency and ligamentous stretch. Ideal for students in anatomy or physiotherapy.

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