Rheumatology Lecture Flashcards
Historical Background
a. Four humours (400 BC, Hippocrates)
- Black bile from spleen (melancholic)
- Yellow bile from gallbladder (choleric)
- Blood from liver (sanguine)
- Phlegm from brain/lungs (phlegmatic)
b. Rheuma- “a substance that flows”. First century AD.
c. “Rheumatism” introduced by Dr. G. Baillou in 1642.
d. Rheumatology: a medical science devoted to the study of rheumatic diseases and musculoskeletal disorders.
Arthritis burden
a. 60 million people (20% of the U.S. population) have one or more of 120 musculoskeletal or rheumatic disorders
- 45.9 million with doctor dx arthritis
- 50% less than age 65
- 32 million with frequent neck/low back pain
- 28 million with osteoporosis/osteopenia
b. Total cost to society: $127.5 billion (1% of 2005 GNP)
i. Direct medical costs: $80.5 billion
* ii. One out of 5 office visits to a PCP is for a MS disorder
iii. 20% of all hospital stays and 10% of all surgical procedures are for a musculoskeletal disorder.
c. Indirect costs: $47 billion in lost earnings
i. 30% of all workers with doctor dx arthritis have arthritis-associated work limitation.
ii. 25% of all disability payments is to a person with a MS disorder (3rd leading cause of work disability).
Arthritis burden: most common diseases
a. Arthritis and autoimmune diseases
1) Osteoarthritis 21 million
2) Crystalline arthritis (gout, CPPD) 3 million
3) Autoimmune dz
i. Rheumatoid arthritis 1.3 million
ii. Juvenile RA 50,000
iii. Spondyloarthropathies(AS,PsA) 700,000
iv. Connective tissue diseases
SLE 322,000
PMR 228,000
Scleroderma 50,000
Others (Sjogren’s, polymyositis, vasculitis)
b. Soft tissue rheumatism (periarticular)
i. Bursitis/tendinitis(periarticular) 5 million
ii. Fibromyalgia (nonarticular) 4 million
c. Osteoporosis/osteomalacia
i. Osteoporosis 10 million
ii. Osteopenia 18 million
Types of Joint pain
- Within Joint “Arthritis”
i. Subchondral bone
ii. Cartilage
iii. Synovial fluid
iv. Synovium - Around Joint “Periarticular”
i. Muscle
ii. Tendon
iii. Tenosynovium
iv. Enthesis
v. Bursa
vi. Ligament - Away From Joint “Nonarticular”
i. Muscle
ii. Bone - Away from Musculoskeletal System “Referred”
i. Visceral
ii. Neurological
“Arthritis”
Musculoskeletal Pain
Falls into two categories–> Either Arthritis or Soft tissue rheumatism
1. Arthritis cartilage - OA SF - Crystal synovium - Rheumatoid Arthritis sub/bone - AVN
- Soft tissue rheumatism
i. Periarticular
- Tendonitis
- Tenosynovitis
- Enthesopathy
- Ligament
- Bursitis
- Other
ii. Nonarticular
- Muscle
- Bone
iii. Referred
- Visceral
- Neurological
Classification
a. Arthritis
Noninflammatory: Osteoarthritis
Inflammatory: Crystalline (gout), autoimmune diseases [RA, CTD (SLE), spondyloarthropathies (AS, reactive, psoriatic)]
b. Soft tissue rheumatism
Periarticular: tendinitis, bursitis
Nonarticular: fibromyalgia, bone (osteomalacia, osteoporosis with fracture)
c. Referred pain and other causes
The Arthritis Classification
Will be either Inflammatory or Noninflammatory
a. Inflammatory
1. Crystal
2. Septic
3. RA, CTD
4. Spondylos
b. Noninflammatory
- Osteoarthritis
- Endo/metabolic/other
- Miscellaneous
- Trauma
- AVN
- Neuropathic/Charcot
Arthritis History and Physical
a. History
i. Pain in joint or in reference area of joint
ii. Pain in all directions of movement
b. Physical exam
i. Swelling and tenderness of entire joint line
ii. Limited/painful ROM in all directions
iii. Pain with active ROM = passive ROM
iv. Effusion=arthritis
Inflammatory vs Noninflammatory Arthritis
Inflammatory:
- Soft tissue swelling (tumor) +/- effusion
i. AM stiffness> 60min - Erythema (rubor)
i. Crystal or septic - Warmth (calor)
- Tenderness (dolor)
i. Pain with rest, nite, activity - Loss of function (functio laeso)-wax and wane
i. Fatigue and systemic sxs
ii. May respond to steroids
Noninflammatory : 1. Bony swelling i. Effusion in knee OA ii. AM stiffness<30min 2. No erythema 3. Minimal warmth 4. Mild tenderness i. Pain with use 5. Variable effect on ADLs i. Slowly progressive ii. No fatigue or systemic sxs iii/ No response to oral steroids
Inflammatory Arthritis
5 signs
- Soft tissue swelling (tumor) +/- effusion
i. AM stiffness> 60min - Erythema (rubor)
i. Crystal or septic - Warmth (calor)
- Tenderness (dolor)
i. Pain with rest, nite, activity - Loss of function (functio laeso)-wax and wane
i. Fatigue and systemic sxs
ii. May respond to steroids
Non-inflammatory arthritis signs
- Bony swelling
i. Effusion in knee OA
ii. AM stiffness<30min - No erythema
- Minimal warmth
- Mild tenderness
i. Pain with use - Variable effect on ADLs
i. Slowly progressive
ii. No fatigue or systemic sxs
iii. No response to oral steroids
Arthritis anatomy
- Inflammatory arthritis = synovitis
Synovitis is the medical term for inflammation of the synovial membrane. This membrane lines joints that possess cavities, known as synovial joints. The condition is usually painful, particularly when the joint is moved. The joint usually swells due to synovial fluid collection.
- Noninflammatory arthritis = cartilage degeneration
Noninflammatory arthritis
Osteoarthritis
a. Pain in joint with use in all directions both passive and active ROM
b. Morning stiffness < 30 minutes
i. shorter morning stiffness
c. Slowly progressive
- d. Weight-bearing joints, spine, DIPs, PIPs, 1st CMC, 1st MTP
- knee and hips, not ankles
e. Joint effusion< 2000 cells/mm3
f. Normal lab test results
g. Osteophytes on Xray
h. TX–> NSAIDs, analgesics
Imaging in Osteoarthritis
*good slide
*Osteoarthritis- Seagull sign
- Will see loss of cartilage, transfer of force to the bone
i. Will see sclerosis on bone
ii. Asymmetric joint space narrowing - Osteophytes
i. Osteophytes form because of the increase in a damaged joint’s surface area. This is most common from the onset of arthritis. Osteophytes usually limit joint movement and typically cause pain. - Will see swelling in PIP and DIP joints
* i. Heberden nodes
* ii. Bouchard nodes
*4. Osteoarthritis: Asymmetric joint space narrowing
- Clinically for hip osteoarthritis
i. will see hip contractures, will be stuck in hip flexion
ii. can see varus formation with kness - Bunyon formation
i. will see valgus bending of toes
Inflammatory arthritis
a. Monoarticular (1 joint)
i. Gout
ii. CPPD/Pseudogout
iii. Infectious
b. Oligoarticular, asymmetric (2-4 joints) +/- spine
i. Spondyloarthropathies
c. Polyarticular, symmetric (>/= 5 joints)
i. Rheumatoid arthritis
ii. CTD: SLE, others
d. Spine predominant
Ankylosing spondylitis
e. Signs
1) Pain in joint with rest and use and with active and passive ROM
2) Morning stiffness > 1 hour
3) Flares of disease
4) Any joint: STS, heat, erythema
* 5)Joint effusion> 2000 cells/mm3
6) Abnormal labs: ESR, CRP, RF, ANA, uric acid
7) Erosions on xrays
TX: NSAIDs, prednisone, DMARDs, biologics, dz specific
Laboratory tests for
a. Signs of inflammation
i. Anemia of chronic dz, elevated platelet count, low albumin
ii. Erythrocyte sedimentation rate (ESR): time RBCs fall in 1 hour. Immunoglobulins and large proteins which are produced in excess in response to inflammation cause the RBCs to fall faster.
iii. C-reactive protein(CRP): protein produced by liver in response to inflammation
b. Chemistries/ urinalysis
i. Look for abnormalities indicating other organ involvement
ii. Uric acid: usually elevated in gout
c. Serologies
i. Rheumatoid factor: Immunoglobulin (usually IgM) that reacts with the Fc portion of IgG. Seen in RA and other diseases
ii. Anti-cyclic citrullinated protein(CCP): specific for RA
iii. Antinuclear antibodies(ANA): antibodies that are directed against antigenic epitopes in the nucleus. Seen in SLE (>99%) and other diseases.
Erythrocyte Sedimentation Rate (ESR)
Inflammatory Arthritis
Upper limit for normal sed rate:
males= 15mm/hr or age/2
females= 20mm/hr or (age + 10 )/2
ESR increased by large asymmetric molecules: fibrinogen, alpha macroglobulins, and immunoglobulins
Signs/SX of inflammatory arthritis
1) Pain in joint with rest and use and with active and passive ROM
2) Morning stiffness > 1 hour
3) Flares of disease
4) Any joint: STS, heat, erythema
* 5)Joint effusion> 2000 cells/mm3
6) Abnormal labs: ESR, CRP, RF, ANA, uric acid
7) Erosions on xrays
TX: NSAIDs, prednisone, DMARDs, biologics, dz specific
Types of Inflammatory Arthritis
a. Monoarticular (1 joint)
i. Gout
ii. CPPD/Pseudogout
iii. Infectious
b. Oligoarticular, asymmetric (2-4 joints) +/- spine
i. Spondyloarthropathies
c. Polyarticular, symmetric (>/= 5 joints)
i. Rheumatoid arthritis
ii. CTD: SLE, others
d. Spine predominant
i. Ankylosing spondylitis
Signs of Inflammation in inflammatory Arthritis
- Anemia of chronic dz, elevated platelet count, low albumin
- Erythrocyte sedimentation rate (ESR): time RBCs fall in 1 hour. Immunoglobulins and large proteins which are produced in excess in response to inflammation cause the RBCs to fall faster.
- C-reactive protein(CRP): protein produced by liver in response to inflammation