World of Joints A look at the joint examination Pediatric Rheumatology Red Team Resident Teaching...
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Transcript of World of Joints A look at the joint examination Pediatric Rheumatology Red Team Resident Teaching...
![Page 1: World of Joints A look at the joint examination Pediatric Rheumatology Red Team Resident Teaching Series.](https://reader035.fdocuments.us/reader035/viewer/2022062314/56649e705503460f94b6d62f/html5/thumbnails/1.jpg)
World of JointsA look at the joint examination
Pediatric Rheumatology
Red Team Resident
Teaching Series
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Joint - Definition
• Joints are discontinuities in skeleton that permit mobility
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Diarthrotic Joint Components
• Hyaline Cartilage or Diarthroses – joints that allow significant movement; – ex: knee/ elbow
• Synovium – Covers all intra-articular
surfaces, except articulating areas of cartilage
– Synovial membrane are special fibroblasts that secrete viscous ultrafiltrate and also have macrophage functions
– Synovial fluid used for lubrication and nutrition
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Diarthrotic Joint Components
• Muscles • Bone• Cartilage
– Precursor to bone
– At the ends of bone
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Joint Components
• Tendons • Ligaments• Entheses
• connections between muscle and bone; are active drivers
• site of insertion into the periosteum
• connections between bones and bones; passive restraints
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Joint Terminology
• Arthralgia: joint pain without abnormality• Arthritis (Synovitis): Objective joint abnormality
– Either joint swelling, or pain/tenderness with limitation
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Arthritis: History
• Objective symptoms lasting minimum of 3 days in same joints
• Pain is usually insidious onset but can be significant enough to affect daily activities
• Morning stiffness – due to gelling phenomenon very common
• Night pain not common• Can have accompanying constitutional symptoms• Inflammatory vs. mechanical joint pain
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• Pain characterization– Site– Number of joints involved– Severity– Frequency– Duration– Pattern of pain– Exacerbating and alleviating factors– Onset: acute or insidious– At rest?– Radiation
• Swelling?• Warmth?• Discoloration?• Stiffness?
Arthritis: History
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• Pain characterization– Frequency, Duration, Pattern of pain:
• Persistent- JIA, infection, malignancy
• Intermittent- associated with activity, more likely due to mechanical problem.
• Migratory pain- last for several days, then resolves, while other previously unaffected joints become painful. Characteristic of ARF, PSRA, HSP, leukemia/ lymphoma
• Recurrent-with spontaneous resolution, may indicate Lyme arthritis, FMF or other periodic syndromes
Arthritis: History
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• Pain characterization– Time of day
• Diurnal variation: JIA is worse in the morning, trauma or mechanical pain worsens with activity, growing pains usually at night, malignancy pain day or night
– Rapid onset within 1-2 days: infection, vasculitis (HSP)
– Insidious onset: JIA– Inflammatory (red, warm, swollen) or mechanical
pain (locks, gives way)
Arthritis: History
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• Pain characterization– Exacerbating factors: inactivity (gelling phenomenon)
in JIA, physical activity worsens mechanical joint pain and growing pains
– Alleviating factors: physical activity usually helps in JIA
• Precipitating factors: – Trauma– Antecedent infection
• Disability
Arthritis: History
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Physical Exam - Joints
• Inspection at rest and during movement and palpation
• Positioning of the joint (with pain placed in minimal pressure position)
• Deformity correctable or non-correctable (swan neck)
• Skin changes – including erythema• Warmth – signs of inflammation
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• Swelling: Bulge sign – confined space with small fluid volume
Balloon sign – pressure on one side makes a ballooning of other side
•Tenderness – diffuse, point, and along the joint line
Physical Exam - Arthritis
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Physical Exam
• Inspect from front of patient:– Swelling over skin changes over
sternoclavicular and acromioclavicular joint site
– Equal shoulder height– Muscle asymmetry– Knee and foot deformities– Extend elbows
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Physical Exam
• Inspect from side of patient:
– Loss of normal cervical and lumbar lordosis
– Facial profile
– Knee deformity
– Lumbar spine flexibility
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Physical Exam
• Inspect from behind the patient:– Straight spine– Similar level of iliac crests– Normal muscle bulk/symmetry– Popliteal swelling– Achilles tendon swelling– Hindfoot deformity– Lumbar spine flexibility (Schoeber’s test)
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Back evaluation
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Back pain: SI pain
• FABERE test reproduces pain at the affected SI joint
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Back pain: SI pain
• FABERE test reproduces pain at the affected SI joint
The FABERE test (Patrick test or "figure of four" test) consists of Flexion of the hip and knee, with ABduction and External Rotation at the hip, so that the ankle of one leg is on top of the opposite knee (a figure four configuration). Force is applied downwards on the bent knee and the opposite hip, causing Extension at the sacroiliac joint.
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Physical Exam - Gait
• Different phases: stance and swing
• Different gaits: • Trendelenburg• Antalgic• high stepping/foot drop• scissors gait/spastic diplegia
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Knee Ranging
Arthritis: Knee Exam
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Muscle bulk and leg length evaluations
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Arthritis: Clinical Evaluation• Affected joints can grow faster causing leg length
discrepancies
Leg lengths – anterior superior iliac spine to medial malleolus
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Hip Ranging
Arthritis: Hip Exam
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Arthritis: Ankle Exam
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Entheses
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Entheses
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Arthritis: Clinical Evaluation
• Local and general growth delay seen– Jaw
– MCP/MTP
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Extra-articular Manifestations
• Skin Rashes• Nailfold Capillaries• Eyes• Muscles
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Manual Muscle Testing
• Muscle – bulk and strength; wasting of muscles– Grading:
• 0-no contraction• 1-visible contraction w/o movement• 2-motion only with gravity eliminated• 3-motion against gravity only• 4-against gravity and some applied load• 5-normal against significant load
• Used for dermatomyositis evaluation
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Normal Nailfolds
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UVEITIS with synechiae
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Band Keratopathy
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Reactive arthritis: conjunctivitis
Iritis