osteoarthritis osteoarthrosis degenerative joint disease prof. dr. Ülkü akarırmak
TRANSCRIPT
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OSTEOARTHRITIS
OSTEOARTHROSIS
DEGENERATIVE JOINT DISEASE
Prof. Dr. Ülkü Akarırmak
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DEFINITION
Osteoarthritis OA is a degenerative disease of diarthrodial (synovial) joints, characterized by
Breakdown of articular cartilage
and proliferative changes of surrounding bones
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EPIDEMIOLOGY
Osteoarthritis(OA) is the most common joint disease
OA of the knee joint is found in 70% of the population over 60 years of age
Radiological evidence of OA can be found in over 90 % of the population
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LIMITED FUNCTION
OA may cause functional loss
Activites of daily living
Most important cause of disability in old age
Major indication for joint replacement surgery
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CHARACTERISTICS OF OA
OA is a chronic disease of the musculoskeletal system, without systemic involvement
OA is mainly a noninflammatory disease of synovial joints
No joint ankylosis is observed in the course of the disease
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CLASSIFICATION OF OA
Primary OA Secondary OA
Etiology is unknown Etiology is known
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AGE
Primary OA > 40 years
Direct correlation
Aging process
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RISK FACTORS FOR PRIMARY OA
Age
Sex
Obesity
Genetics
Trauma (daily)
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SECONDARY OSTOARTHRITISTraumaPrevious joint disorders;Congenital hip dislocationInfection: Septic arthritis, Brucella, TbInflammatory: RA, ASMetabolic: GoutHematologic: HemophiliaEndocrine: DM
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ETIOLOGY OF OA
Cartilage properties
Biomechanical problem
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Morphology of Primary OA
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Primary Generalized OA
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STRUCTURE OF JOINT CARTILAGE
Collagen (Type 2)
Proteoglycan
- Hyaluronic acid
- Glycoseaminoglycan
Water
Condrocyte
Regeneration and Degeneration
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PATHOLOGY OF OA
Fibrillation
Eburnation
Osteophytes
Subcondral cysts
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LABORATORY FINDINGS OF OA
There are no pathognomonic laboratory findings for OA
Laboratory analysis is performed for differential diagnosis
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RADIOLOGIC FINDINGS OF OA
Narrowing of joint space
(due to loss of cartilage)
Osteophytes
Subchondral (paraarticular) sclerosis
Bone cysts
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RADIOLOGIC GRADE OF OA
G1 Normal
G2 Mild
G3 Moderate
G4 Severe
Kellgren Lawrence Classification
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DIAGNOSIS OF OA
CLINICAL FINDINGS
Joint pain
+
RADIOLOGIC FINDINGS
Osteophytes
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CLINIC OF OA SIGNS AND SYMPTOMS
Joint pain - degenerative
Stiffness following inactivity – 30 min
Limitation of ROM – later stages
Deformity – restricition of ADL
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OA OF KNEE JOINT (GONARTHROSIS)
More common in obese females over 50 years of ageJoint stiffness (<30 minutes)Mechanical painPhysical examination findings: CrepitusPain on pressurePainful ROM and functional limitationLimitation of ROM in later stages of OA (first extension)Laboratory analysis within normal limits
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GENU VALGUM - ORTHOSIS
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RADIOLOGIC FINDINGS? GRADE 1 - 4?
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OA OF HIP JOINT
More common in males over 40 years of age
Joint stiffness
Pain of hip, gluteal and groin areas radiating to the knee (N obturatorius)
Mechanical pain
Limited walking function
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COXARTHROSIS
Physical examination:
Antalgic limping
Limitation of ROM (first internal rotation)
Painful ROM
Trendelenburg test positivity
Leg length discrepancy
Laboratory analysis within normal limits
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BIOMECHANICS
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X-RAY OF HIP OA
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Peripheral Joints
Hands
Feet
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ETIOPATHOGENESIS OF OA
Age,gender
Local
Genetic OA biochemical effects
Other factors
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ETIOPATHOGENESIS OF OA
Dysfunction of joint cartilage
Condrocyte function: 1- Degredative enzymes
(metalloproteases)
2- Inhibitors
Degeneration and regeneration functions are balanced
IL-1 , degredative enzymes + synovial inflammation results: Breakdown of cartilage
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PATHOGENESIS OF OA
Cytokines IL-1, IL-6, TNF-
Cell destruction
Membrane phospholipids
Arachidonic acid
Cox-1, Cox-2
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IL-1 and metalloproteases have been found to play an important role in cartilage destruction.
Local growth factors, especially transforming growth factor (TGF) are involved in the formation of osteophytes
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TREATMENT OF OA
Symptomatic treatment
Structure modifying treatment
Surgical treatment
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STRUCTURE MODIFYING TREATMENT
Hyaluronic acid injection (HA)
Glycose amino glycans (GAG)
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PRIMARY PREVENTION OF OA ??
Regular exercises
Weight control
Prevention of trauma
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AIMS OF OA TREATMENT
Pain relief
Preservation and restoration of joint function
Education
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Non-Pharmacologic Treatment of OA
Patient educationWeight loss (if overweight)Aerobic exercise programsPhysical therapy Range-of-motion exercises Muscle-strengthening exercisesAssistive devices for ambulationPatellar tapingAppropriate footwear Lateral-wedged insoles (for genu varum)BracingOccupational therapyJoint protection and energy conservation
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PHARMACOLOGIC TREATMENT OF OA
Oral Systemic Medical Agents - Analgesics (acetaminophen) - NSAIDs - Opioid analgesics
Intraarticular agents: Hyaluronan Glucocorticoids (effusion)
Topical agents
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HAND OA - RESTING SPLINT
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SYMPTOMATIC TREATMENT OF OA
Decrease of joint loading
- Weight control
- Splinting
- Walking sticks
Exercises
- Swimming
- Walking
- Strengthening
Patient education
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INDICATIONS OF SURGICAL INTERVENTION
Severe joint pain,
resistant to conservative treatment methods
Limitation of daily living activities
Deformity, angular deviations, instability
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INVASIVE METHODS
Joint lavage
Arthroscopy
Cartilage grefting- genetic engineering
Surgery
Osteotomy
Joint replacement
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QUESTIONS?