orthopedic pathology (joint pathologies) Flashcards

1
Q

joint pathologies

A

..

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2
Q

types

A

degenerative
(Osteoarthritis)

inflammatory
(Reumatoid arthritis, Ankylosing spondylitis, Psoriatic arthritis)

metabolic
(Gout, pseudogout)

infectious
(Septic arthritis)

neurogenic
(Charcot’s arthropathy)

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3
Q

OA, aka

A

DJD

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4
Q

abut OA

A

Chronic, degenerative condition that affects joints, specifically articular cartilage and subchondral bone

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5
Q

what structure particularly affet

A

articular cartilage
subchondral bone

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6
Q

prealance increaes with

A

age

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7
Q

MOST COMMON JOINT DISORDER IS???

A

OA

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8
Q

primary vs seconary OA

A

Primary OA – idiopathic

Secondary OA – to joint trauma, infection, hemarthrosis, osteonecrosis, etc.

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9
Q

primary OA

A

MOST COMMON

via regualr wear/tear

caused by the breakdown of cartilage

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10
Q

secondary OA

A

caused by another disease, infection, injury, or deformity. Osteoarthritis starts with the breakdown of cartilage in the joint.

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11
Q

seconary via

A

joint trauma, infection, hemarthrosis, osteonecrosis, etc.

also eg
RA cause OA (?)

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12
Q

risk factors OA

A

joint immobilization

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13
Q

jint immobilziatson oa

A

Conclusions. Joint immobilization caused multiple OA-like lesions in both mice and humans. Joint immobilization induced progressive sensory innervation, synovitis, osteophyte formation, and cartilage loss in mice, which can be partially ameliorated by remobilization.

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14
Q

other isk fators

A

Altered biomechanics – developmental deformities; Genu valgum/varus

Immobilization

Trauma

Pathology

Genetics – familial forms of some hand OA

Gender – mc in women over age 50

Lifestyle- obesity (high correlation w/ knee OA and even hand OA)

Low vitamin D and Vitamin C intake are associated with increased risk of knee OA progression

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15
Q

which vitamin definicency, OA

A

Low vitamin D and Vitamin C intake

knee OA progression

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16
Q

OA define

A

can be defined as a gradual loss of articular cartilage, combined with thickening of the subchondral bone, bony outgrowths (osteophytes) at joint margins, and mild, chronic nonspecific synovial inflammation.

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17
Q

other features of oa

A

osteophytes (exostosis)

nonsepcific synovial infalmation

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18
Q

OA part of

A

aging

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19
Q

can you distinguish bw oa and aging

A

3 states identified

normal cartiage –> aginng cartilage –> OA cartilage

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20
Q

pathogeneiss OA

A

Phase 1: Edema and Microcracks

Edema of the extracellular matrix

Cartilage loses its smooth aspect and microcracks begin to appear

Cartilage softens and thins
Loss of joint space

There is a focal loss of chondrocytes

Unable to repair as normal

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21
Q

phase 2

A

Phase 2: Fissuring and Pitting

Microcracks deepen perpendicularly in the direction of tangential forces and along collagen fibers

Vertical clefts form in the cartilage above the subchondral bone

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22
Q

phase 3

A

Phase 3: Erosion

Fissures cause fragments of cartilage to detach off; causing:
Osteocartilaginous loose bodies

—> Synovial inflammation (often more focal than inflammation occurring due to rheumatoid synovitis)

—> Inflammation caused synovial hypertrophy and capsular thickening

Uncovering subchondral bone:
—> Sclerosing of subchondral bone

—> Subchondral cysts

—> Osteophyte formation

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23
Q

Dx oA

A

History
Physical exam
Lab tests
X-ray

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24
Q

Sx

A

Pain is the cardinal symptom of OA and is the major determinant of disability and functional impairment

Pain is not always present in patients with radiographic findings

Degree of radiographic findings does not always correlate with clinical symptoms

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25
IMPORTANT NOTE: IS BAD OA ALWAYS WITH PAIN
no, very bad OA might not have proporitonal pain and very mild OA might have a lot of pain RADIOGRAPHIC FINDINGS NOT PROPORTIONAL WITH PAIN
26
mechanisms of pain?
multifactoral and may include: Periostitis (bone remodeling) Subchondral microfractures Synovial inflammation Periarticular muscle spasm Bone ischemia Elevated interosseus pressure
27
SSx OA
Monoarticular or polyarticular Joint pain (usually relieved w/ rest) Tenderness Crepitus Occasional effusion Variable degrees of local inflammation Bony enlargement Stiffness (morning stiffness- less than 30min) Decreased ROM Deformities; misalignment Muscle spasm/contractures
28
how long stiffness last OA
usually less than 30 mins
29
ROM OA
decrease
30
muscle spasms/conttractures OA
yes (bracing/protective spasms to avoid pain) contractures due to prolonged limited ROM?
31
crepitus?
a grating sound or sensation produced by friction between bone and cartilage or the fractured parts of a bone.
32
common features/locaitons hand
Heberden’s nodes at distal IP joint accompanied by lateral joint deviation Bouchard’s nodes found at proximal IP joint
33
knee
Pain worsens with stair climbing, standing Highly associated w/ obesity
34
spine
Vertebrae of L4, L5, C4-C7, upper T-spine
35
hip
Internal rotation and extension are reduced note CPR: mr/abd, f/e, er
36
treatment oa
Analgesics Topical creams/gels NSAIDs Corticosteroids
37
other tx
Exercis: Strengthening, low impact ROM exercise Avoid stress on joints Control weight Warm-up/cool down Ice Pacing
38
note the dilemma
exercises that are good for osteoporosis cna be bad for OA activiites that are good for OA, while not bad for osteoporosis, will not prevent it as well either OA develops quicker, or osteoporosis
39
other tx OA, hydro surgery, complementary therapy (Vs allotherapy)
Hydrotherapy Heat/cold (chronic) Surgery Clean up (arthroscopy) or replace joint Complementary therapy Acupuncture Massage Mobilization/manipulation PT chiro (?)
40
RA
A systemic inflammatory disease that predominantly manifests in the synovial membrane of diarthrodial joints
41
important feature of RA
hyperplasia of synovial fibroblasts structural damage of cartilage, bone, and ligaments
42
where else? extra articular manifestation
can effect a variety of organs and is a significant factor in morbidity and mortality of people w/ RA Esp kidneys
43
etiolgoy
genetic + viral (?)
44
gender RA
Women > men (3:1)
45
age RA
ny age, prevalence incr. with age (25-50)
46
RA onset, remission
Onset gradual Symptom free for months or years Exacerbations and remissions
47
RA prognosis
Prognosis uncertain Death can occur from extra-articular disease
48
RA and immune response
aberrant immune response in a genetically predisposed host that leads to chronic progressive synovial inflammation and destruction of joint archeticture
49
synovium and RA
Primary inflammatory lesion involves the synovium Edema, fibrin exudation and hyperplasia of synovium
50
what type of exudate RA , where?
fibrin exudation and hyperplasia of synovium
51
other common feature/sx
Tenosynovitis is present in a majority of patients
52
extraarticualr menif
Extra-articular manifestations are common but individuals differ in the pattern of tissues involved
53
Ssx RA
Pain Warm, red, swollen, tender joints tiffness Morning stiffness usually lasting more than 2 hours Structural damage Cartilage loss and erosion of periarticular bone (evident on xray)
54
how long morning stiffness
more than2 hours
55
where often begin RA
Often begins in hands and wrists Usually symmetrical and uniform
56
most common site
PIP, MCP, wrists, knees, MTP, subtalar, C1, C2 (TV LIGAMENT OF C1-C2 articulation)
57
Han ddefomirtities
Swan neck – PIP hyperextended, DIP flexed Boutonniere (buttonhole) – PIP flexed, DIP hyperextended
58
other ssx
tendon/muscle spasm (REFLEX MUSCLE GUARDING?) Contracture (scar tissue, inflammation immune damage) Subluxations and deformities may develop Knee valgus Baker’s cyst d/t inflamed synovium Neck pain Unstable C1-C2 (important to rule out prior to mobilization/adjustments of upper cervical complex)
59
IMPORTANT CYST ASSOCIATED WITH RA
Baker’s cyst d/t inflamed synovium
60
IMPORTANT LIGAMENT ASSOCIATED WITH RA NECK PAIN
TRANSVERSE LIGAMENT OF ATLAS Unstable C1-C2 (important to rule out prior to mobilization/adjustments of upper cervical complex)
61
extra articular SSx
Rheumatic nodules Develop in 50% of individuals Form subcutaneously, in bursae and along tendon sheaths Systemic symptoms include aching, stiffness, weight loss, fatigue Ocular manifestaions Dry eyes Pericarditis Pleurisy and laryngeal pain Renal complications Rare Weight loss Anemia
62
inflammation of SEROUS membranes
PERICARIDUM pleura Pleuritis (Pleurisy) pericarditis
63
rheumatic nodules, devleop in what percentage of patients
Rheumatic nodules Develop in 50% of individuals Form subcutaneously, in bursae and along tendon sheaths
64
RA why dry eyes
Inflammation from RA causes abnormalities in the tear glands (lacrimal), significantly reducing fluid secretion The symptoms associated with dry eyes are more common in the later part of the day, when tears from the tear gland (systemic) have dried up and evaporated.
65
RA why anemia
RA can be associated with different types of anemia, including anemia of chronic inflammation and iron deficiency anemia. When you have an RA flare-up, the immune response causes inflammation in the joints and other tissues. Chronic inflammation can lower the production of red blood cells in your bone marrow.
66
RA Dx
family history Lab tests: rheumatoid factor – present in 85% of people w/ RA ESR & C-reactive protein X-ray, imaging
67
C reactive protein test
C-reactive protein (CRP) is a protein made by the liver. The level of CRP increases when there's inflammation in the body
68
ESR test (erythrocyte sedimentation rate)
What Is an ESR Test? An ESR test measures how far red blood cells settle to the bottle of a test tube in 1 hour. Inflammation or infection can lead to extra proteins in the blood, which can make the red blood cells settle farther in a test tube. When this happens, the ESR is higher.
69
rheumatoid factor test
This test measures rheumatoid factors in a sample of your blood. High levels of rheumatoid factors may be a sign of rheumatoid arthritis
70
Tx RA
Corticosteroids to decrease inflammation and pain Immunosuppressive drugs NSAIDs Surgery Physiotherapy
71
RA prognosis
Difficult to establish d/t chronic nature of the disease, its variability and the difficulty in identifying milder forms Spontaneous remission is possible Approx 10% of cases 90% of joints affected are usually involved within the first few years of the disease Patients with severe forms have a mortality rate approx 10 -15 years earlier than expected and d/t infections, pulmonary, renal, and gastrointestinal bleeding.
72
remission in what percentage
Spontaneous remission is possible Approx 10% of cases
73
ankylosing spondylitis (AS) etymology
ankylos meaning crooked, curved or rounded, spondylos meaning vertebra, and -itis meaning inflammation
74
AS affects
systemic disorder characterized by inflammation of the axial skeleton (SI joints, facets, IVDs) and large peripheral joints.
75
Seronegative spondyloarthropathy
MEDICINE adjective: seronegative giving a negative result in a test of blood serum, e.g. for the presence of a virus. Spondyloarthropathies are a family of long-term (chronic) diseases of joints. These diseases occur in children (juvenile spondyloarthropathies) and adults. They include ankylosing spondylitis, reactive arthritis, psoriatic arthritis, and joint problems linked to inflammatory bowel disease (enteropathic arthritis).
76
Seronegative spondyloarthropathies
Seronegative spondyloarthropathies (SpA) are a family of rheumatologic disorders that classically include[1]: Ankylosing spondylitis (AS) Psoriatic arthritis (PsA) Inflammatory bowel disease (IBD) associated arthritis. Reactive arthritis (formerly Reiter syndrome; ReA)
77
ankylosis spondylitis
Ankylosis - immobility and fixation of a joint Spondylitis - inflammation of the vertebrae
78
AS gender
Men > women (3:1) Onset insidious
79
AS age
Typically occurs between ages 20 – 40 Average age is 26
80
remissions or no
Development variable Exacerbations and remissions Can lead to deformities
81
ettiology/cause
Idiopathic genetic/ environmental "Has genetic component (20% increased risk w/ 1st degree relative), but thought to be influenced by environmental factors"
82
HLA-B27 test Human Leukocyte Antigen; subtype B27
The HLA-B27 test is primarily ordered to help strengthen or confirm a suspected diagnosis of ankylosing spondylitis (AS), reactive arthritis, juvenile rheumatoid arthritis (JRA), or sometimes anterior uveitis. "Human leukocyte antigen B27 is a class I surface molecule encoded by the B locus in the major histocompatibility complex on chromosome 6 and presents antigenic peptides to T cells. "
83
ENTHESES ???????????????????????
Entheses are boney insertion sites of tendons and ligaments. Enthesopathies are defined as the pathologies that affect the entheses. ENTHESIS "Enthesis" is rooted in the Ancient Greek word, "ἔνθεσις" or "énthesis," meaning “putting in," or "insertion."
84
AS pathogneesis
Inflammation at the entheses is the central feature of AS (enthesitis) (Entheses is the site where tendons and ligaments attach to bone.)
85
then what
Inflammation of ligaments results in fibrosis, bony erosions and eventually causes reactive bone growth and spurring
86
WHAT CAN HAPPEN EVENTUALLY
Eventual fusion of joint can occur
87
where usualyl begin ****************
Usually begins in the lumbar spine and SI joints (sacroiliitis) and proceeds up the spine (over years)
88
AS and back pain
Insidious onset Persistent for more than 3 months Worse at night and w/ inactivity Improved by activity
89
UNIQUE about AS (AS and ACTIVITY LEVELS)
Worse at night and w/ inactivity Improved by activity
90
L spine stiffness in morning and time to improve
L-spine stiffness: Typically AM Takes more than 2 hours to get better
91
pain in posteiror thigh?
Pain in buttocks, low back, post. thigh referral?)
92
what are some changes to spine posture?
thoracic hyperkyphosis lumbar hypolordosis Lumbar lordosis lost Thoracic curve increases Flexion contracture (hips)
93
AS and breathing problems
note fusion of vertebrae and surround joints/structures of costovertebral joints Chest is fixed/flattened Chest expansion limited "Trouble breathing as the upper body curves forward and the chest wall stiffens. Severe ankylosing spondylitis can also cause scarring of the lungs (pulmonary fibrosis) and an increased risk of lung infection."
94
decreased ROM of spine and pain
Pain diminishes over the years as fusion occurs Muscle wasting Fatigue
95
complications AS
Osteoporosis, fractures, stenosis, C1-C2 subluxation
96
SPINAL STENOSIS
Spinal stenosis happens when the space inside the backbone is too small. This can put pressure on the spinal cord and nerves that travel through the spine. Spinal stenosis occurs most often in the lower back and the neck. "In severe cases, spinal stenosis may cause partial or complete leg paralysis that requires emergency medical treatment."
97
AS c1-c2 subluxation
In ankylosing spondylitis, cervical spine can be involved and may progress to C1-C2 subluxation, also known as atlantoaxial subluxation, with a prevalence ranging from 13.8 to 21% in adults [5–8].
98
what percentage systemic manifestation
30% 1/3
99
which parts affected?
Uveitis, iritis, conjunctivitis Inflammation of eyes Pain, blurred vision, blindness Large and small bowel disease Cardiovascular involvement
100
is AS autoimmune?
Ankylosing spondylitis is an autoimmune disease.
101
Dx AS
History Phiscal exam Lab : HLA B27 test X-rays Bamboo spine – vertebrae take on a fused appearance
102
Tx AS
Meds (anti-inflammatories) Massage/Chiro/Physio Sleep on hard mattress or cold floor (during inflammation) Exercise, stretching Breathing exercises Surgery (severe cases)
103
AS breathing
Breathing exercises
104
AS where to sleep during flareup
Sleep on hard mattress or cold floor (during inflammation)
105
Psoriatic arthritis
Is an arthritis often associated with psoriasis of the skin
106
psoriasis
a skin disease marked by red, itchy, scaly patches.
107
psoriasis and arthritis
1 in 20 will develop arthritis with the skin condition
108
cause
idiopathic
109
psoriatic arthritis affects
Primarily affects distal joints of fingers and toes When spine is affected (L/S and sacrum) Stiffness, burning, pain
110
psoriatic arthritis Dx, Tx
same in men and women Dx Physical exam, joint swelling, skin sores Tx NSAIDS Antirheumatic drugs ---> E.g. Methotrexate Steroids Surgery RMT, PT, Hydro
111
polyarthritis define
the medical term for having arthritis that affects five or more of your joints at the same time
112
Gout (METABOLIC ARTHRITIS)
group of disorders in which crystals of monosodium urate (uric acid) are deposited in the tissues, accompanied by attacks of acute arthritis
113
where does uric acid go
Marked by an elevated level of serum uric acid and the deposition of urate crystals in the joints, soft tissue AND KIDNEYS
114
normal presence of uric acid
Uric acid is normally formed with the break down of purines (Adenine, Guanine) Uric acids dissolves in the blood, passes through the kidneys and is then excreted
115
abnormal presence of uric acid
With too much production or with poor kidney function uric acid may precipitate out and accumulate in body tissues Crystals frequently collect on articular cartilage These trigger an inflammatory response resulting in local tissue necrosis and proliferation of fibrous tissue (scar tissue?)
116
tophi (tophus)
Tophi are ordered aggregates of monosodium urate (MSU) crystals that develop in long-lasting, neglected gout. Most of them are subcutaneous and involve the feet, hands, knees, and elbows. They are a feature of advanced gout and indicate a large crystal load.
117
1) primary hyperuricemia
Inherited disorder of uric acid metabolism
118
2) Secondary hyperuricemia
Occurs as a result of some other metabolic problem Increased DNA turnover via Leukemia, lymphoma, chemotherapy
119
3) Idiopathic hyperuricemia
..
120
cause gout (metabolic arthritis)
Can be the result of urate overproduction or decreased urinary excretion of uric acid
121
note intracellular accumulation (?) uric acid underexretion, oversecretion, underutilization (?) and gout (?)
..
122
risk factors
Diet rich in purines (adenine, guanine) Nitrogen containing compounds found in foods Purine-containing foods: red meats, organ meats, shellfish, sweet breads, dairy, beer
123
gender distribution, gout (Metabolic arthritis)
Male > female – 9:1 Usually 40-50 years
124
other risk factors, gout
Obesity Excessive weight gain, especially with puberty Moderate-heavy alcohol intake Hypertension Abnormal kidney function Certain medications
125
more risk factors
Certain diseases - lymphoma, leukemia, hemoglobin disorders ---> Increased nuclear-protein turnover Decreased thyroid function Dehydration Excessive dining
126
gout and kidney stones
Studies have shown that patients with gout are 60 percent more likely to develop kidney stones. Kidney stones, also known as renal lithiasis, are similar to gout in that they are both related to a high concentration of uric acid in the blood.
127
most common where?
Most common - first MTP joint Can also affect fingers, wrists, elbows, ankles, knees
128
onset of pain, and inflammation
Rapid onset pain, swelling, heat, redness, tenderness, +/- fever
129
tophi...
Nodular masses of uric acid depositing in soft tissues of body - tophi
130
is gout unilateral or bilateral
Tends to be unilateral can be bilateral (..)
131
gout (metabolic arthritis) diagnosis
differential diagnosis (DDx) ---> RULE OUT OTHER POSSIBILITIES E.g. Septic (Infectious) Arthritis, RA, neoplasm (vs tophi)
132
important diagnostic tools
Monosodium urate crystals (tophi) are found within synovial fluid, connective tissue or articular cartilage Serum uric acid levels are elevated
133
Gout treatment
To end acute attacks and prevent recurrent attacks (NSAIDS, Colchicine) correct the hyperuricemia
134
Colchicine
a yellow compound present in the corms of colchicums, used to relieve pain in cases of gout.
135
Gout, Tx
Adequate fluid intake Weight reduction Dietary changes Decrease alcohol (increases purine catabolism) NSAIDS, corticosteroid injections, colchicine Uric acid inhibitors (allopurinal)
136
infectious arthritis (SEPTIC ARTHRITIS)
Joint inflammation as a result of infection Can be due to bacteria, fungus, virus
137
bacterial pathogens vs septic arthritis
Staphylococcus aureus - the most common cause in adults (Staph Infection) Haemophilus influenzae - the most common cause in children Neisseria gonorrhoea - in sexually active young adults
138
other bacterial pathogens vs septic arthritis
Escherichia coli - in the elderly, IV drug users and the seriously ill (E. coli) M. tuberculosis - Cause septic spinal arthritis (Pott’s Disease) Streptococcus Gonococcus
139
how does infection get into joint for spetic arthritis
septicemia (blood poisoning) blood poisoning, especially that caused by bacteria or their toxins. the presence of microorganisms or their toxins in the blood, causing disease; septicemia.
140
how else does infection get into joints
Direct infection – needle users Iatrogenic – medical treatment Catheters Trauma Immunocompromised patients
141
Direct infection – needle users Iatrogenic – medical treatment Catheters
during medical treatment insufficient protocols
142
pathogenesis, septic arthritis
Bacteria adheres to synovium: Leads to scar tissue and synovium proliferation Hydrolysis of proteoglycans and collagen (breaks down articular cartilage) *** Cartilage and bone destruction occur: Takes a very short time for joint death and direct pressure necrosis
143
infective arthritis clinical manifestations
Acute onset of joint pain, swelling, tenderness, loss of motion Males and females (equal?) Fever, chills Pus Skin lesions Polyarthralgia Joints primarily affected: Shoulders, knee, hips (proximal joints)
144
Infective arthritis Dx
PE - pain, swelling, redness in joint History - STI’s, IV drug use, IC state, surgery, trauma Blood test - increased WBC count, high RBC sedimentation rate ---> ESR TEST Fever Aspirate and culture synovial fluid X-ray
145
Aspirate and culture synovial fluid (Synovial Fluid Analysis)
Gram stain and bacterial culture: synovial fluid aspirate is analyzed for gram stain and both aerobic and anaerobic culture to determine the presence of infection; the presence of any organism indicates abnormal findings.
146
Infective arthritis Tx
Medical emergency Antibiotics via IV Drain infected joint to decrease pain Rest
147
infective arthritis prognosis
Acute nongonococcal bacterial arthritis can destroy articular cartilage, permanently damaging the joint within hours or days
148
"
Although it's rare, septic arthritis is a serious condition. It can cause permanent damage to your affected joint and other complications. It can also cause death if it's not treated. Be sure to see your healthcare provider or go to the nearest hospital immediately if you experience symptoms.
149
antibiotics
Septic arthritis often needs treatment right away with antibiotics. This can improve symptoms within 48 hours. Some infections caused by fungi need treatment with antifungal medicine. Viral infections are not treated with medicine. Antibiotics often stop the infection in a few days, but in some cases, they must be given over several months. Infectious arthritis caused by a virus usually goes away on its own with no specific treatment and fungal infections are treated with antifungal medication. Joint Drainage.
150
Charcot disease
Aka Charcot’s arthropathy, neuropathic arthropathy Progressive degeneration of the stress-bearing portion of a joint Most commonly associated with diabetic neuropathy Most commonly occurs in the foot
151
charcot
Involves bone destruction and absorption leading to deformity, dislocation, ulcerations, bone fragments and a unstable joint Cause Any condition that decreases peripheral sensation, proprioception and fine motor control
152
most common cause
DM neuropathy m/c
153
diabetic neuropathy
.
154
first theory of underyling mechanism
Neurotrauma: Loss of peripheral sensation and proprioception leads to repetitive microtrauma to the joint in question; this damage goes unnoticed by the neuropathic patient, and the resultant inflammatory resorption of traumatized bone renders that region weak and susceptible to further trauma. Indeed, it is a vicious cycle. In addition, poor fine motor control generates unnatural pressure on certain joints, leading to additional microtrauma.
155
second theory of underyling mechanism
Neurovascular: Neuropathic patients have dysregulated autonomic nervous system reflexes, and de-sensitized joints receive significantly greater blood flow. The resulting hyperemia leads to increased osteoclastic resorption of bone, and this, in concert with mechanical stress, leads to bony destruction.
156
both mechanisms?
In reality, both of these mechanisms probably play a role in the development of a Charcot joint.
157
charctor SSx
Swelling, warmth, redness, subluxation/dislocation, deformity, fractures Complications: joint infections, hemarthrosis, septicemia
158
tx charcot
.
159