MSK Flashcards
What are articular structures?
Joint capsule & articular cartilage, synovium & synovial fluid, intra-articular ligaments, and juxta-articular bone.
What are extra-articular structures?
Periarticular ligaments, tendons, bursae, muscle, fascia, bone, nerve, & overlying skin.
What are ligaments?
Rope-like bundles of collagen fibrils that connect bone to bone.
What are tendons?
Collagen fibers connecting muscle to bone.
What is cartilage?
Collagen matrix overlying bony surfaces.
What is bursae?
Pouches of synovial fluid that cushion the movement of tendons & muscles over bone or other joint surfaces.
Synovial joint?
Joint is freely movable.
Bones are covered by articular cartilage & separated by synovial cavity.
Synovial membrane secretes synovial fluid that lubricates joint movement.
Examples of synovial joint?
Shoulder & knee.
Cartilaginous joint?
Joint is slightly movable.
Bones separated by fibrocartilaginous discs that contain nucleus pulpous that cushions bony movement.
Examples of cartilaginous joint?
Vertebral bodies of the spine.
Fibrous joint?
Have no appreciable movement.
Bones separated by fibrous tissue or cartilage.
Examples of fibrous joint?
Sutures of the skull.
Spheroidal (ball & socket)?
Shape: Convex surface in concave activity.
Movement: Wide ranging flexion, extension, abduction, adduction, rotation, and circumduction.
Examples: Shoulder, hip
Hinge?
Shape: Flat, Planar.
Movement: Motion in one plane; flexion & extension.
Example: Interphalangeal joints of hand & foot; elbow.
Condylar?
Shape: Convex or concave.
Movement: Movement of two articulating surfaces not dissociable.
Examples: Knee; temporo-mandibular joint.
Steps to evaluating joint pain?
Articular vs. extra articular
Acute (<6 wks) vs. chronic (>12 wks)
Inflammatory vs. noninflammatory
Localized (monoarticular) vs. diffuse (polyarticular)
What do you ask a patient w’/ joint pain?
Fever/chills.
What is monoarticular?
Single joint –> injury, monoarticular arthritis, extra articular cause (tendinitis, bursitis)
What is polyarticular?
Several joints (>/= 4), Ask about pattern of involvement.
Pt presents w/ migratory pattern from joint to joint?
Rheumatic fever, gonococcal arthritis.
Pt presents with pain spreading from one joint to multiple joints or additive/progressive pattern & symmetric?
RA
What causes inflammatory joint disorders?
Infectious (Neisseria gonorrhea, Mycobacterium tuberculosis).
Crystal induced (gout) Immune related (lupus, rheumatoid arthritis).
Reactive (reactive arthritis).
Idiopathic
Signs of articular joint pain?
Decreased active & passive ROM and morning stiffness.
Signs of extra articular joint pain?
Decreased active ROM & nml passive ROM and periarticular tenderness (occurring around the joint).
Myalgias?
“Aches & pains”, pain is in the muscle.
Arthralgias?
Joint pain w/ no evidence of arthritis.
Tenosynovitis?
Inflammation of tendon sheaths.
Sprains?
Stretching/tearing of ligaments.
Extra articular conditions?
Myalgias, arthralgia, tendonitis, bursitis, tenosynovitis, & sprains.
Pt has joint pain and butterfly rash on cheeks?
Lupus
Pt has joint pain and scaly plaques on extensor surfaces?
Psoriasis
Pt has joint pain and stiffness especially in the morning, better throughout the day w/ movement?
RA
Pt has joint pain and bulls eye rash?
Lyme
Red Flags for Low Back Pain?
Age <20 yrs or >50 yrs
History of cancer
Unexplained weight loss, fever, or decline in general health
Pain lasting more than 1 mo or not responding to treatment
Pain at night or present at rest
History of intravenous drug use, addiction, or immunosuppression
Presence of active infection or human immunodeficiency virus (HIV) infection
Long-term steroid therapy
Saddle anesthesia
Bladder or bowel incontinence
Neurologic symptoms or progressive neurologic deficit
Lower extremity weakness
Pain when pt touches the opposite scapula also called Apley Scratch Test signifies?
Rotator cuff disorder or adhesive capsulitis.
Pain with adduction (crossover test) is positive for what disorder?
AC joint disorder.
What is the MCC of shoulder pain?
rotator cuff disorder.
Pain provocation tests for Rotator Cuff Disorder?
Pain arc test, neer impingement, & Hawkins impingement sign.
Strength Tests for Rotator Cuff Disorder?
External rotation lag test: Supraspinatus & infraspinatus disorders.
Internal rotation lag test: Subscapularis disorder
Drop-arm test: Supraspinatus rotator cuff tear/bicipital tendinitis
Composite Tests for Rotator Cuff Disorder?
External rotation resistance test and Empty can test.
What is a positive painful arc test and what does it mean?
Fully abduct the patient’s arm from 0° to 180° and shoulder pain from 60° to 120 and it signifies subacromial impingement/rotator cuff tendinitis disorder.
What test signifies infraspinatous disorder?
External Rotation Resistance Test
What test signifies a supraspinatous rotator cuff disorder?
Empty Can Test
What are the carpal tunnel syndrome special tests?
Tinel Sign: Tap lightly on median nerve & phalen sign: backwards praying for 60 s.
What does Finkelstein Test signify?
de Quervain’s Disease
Tests to check for MCL injury?
Abduction or valgus stress test.
Tests to check for LCL injury?
adduction or varus stress test.
Tests to check for ACL injury?
Anterior drawer sign, Lachman Test
Tests to check for PCL injury?
Posterior Drawer sign.
Tests to check for medial and lateral menisci injury?
McMurray Test