lubrication, free movement,
and nutrition of the cartilage
since it doesn’t have a blood
supply
viscous,
non-Newtonian fluid
found in the cavities
of synovial joints.
hyaluronic
acid
lubricin
collagenases
proteinases
They allow free movement
It doesn’t ossify, except
under certain pathological
conditions.
Articular surfaces
of the bone
Hyaline
cartilage(articular
cartilage)
The entire joint cavity is
covered by a dense fibrous
tissue capsule
Certain areas of
the dense
fibrous tissue
capsule are
thickened
occasionally by
capsular
ligaments
Outside of the capsule,
extra-capsular
ligaments are found
Intra-capsular (intra-articular)
structures can be found;
meniscus, labrum, tendons,
and disc.
A synovial
sheath .
a tubular bursa
that surrounds a
tendon.
Bones
14 phalanges
8 Carpals
Trapezium
Trapezoid
Sarah Looks Too Pretty, Try To Catch Her
Capitate
Hamate
Scaphoid
Lunate
Triquetrium
Pisiform
5 metacarpals
Arteries
Superficial Palmar Arch
mainly by ulnar a.)
is superficial to the long flexor
tendons just deep to the palmar
aponeurosis. On the lateral side
of the palm, the arch
communicates with the superficial
br. of the radial artery.
Deep Palmar Arch
mainly by radial a
penetrates the origin of the hypothenar muscles;
access the deep plane of the palm to anastomose
with the deep palmar arch derived from the radial
artery.
Nerves
Ulnar N.: medial
2/3 of the palm &
dorsum + medial
11/2 fingers
Median N.:
Lateral 2/3
of the palm
+ lateral 3
1/2
Radial n.: lateral 2/3 of the dorsum
of hand + lateral 3 1/2 fingers
Muscles
Joints
Wrist Joint
Synovial ,
Ellipsoid ,
biaxial
Articular disc that separates
the head of ulna from the
triquetral .
Mid-Carpal Joint
Synovial joints
Between the
two rows of
carpal bones
Positioning of the hand in abduction
, adduction , flexion and particularly
extension
Carpometacarpal Joint
Between the distal row of carpal
bones and proximal end of the
metacarpal bones .
more stability than mobility.
Metacarporhalangeal Joints
Between the distal heads of the
metacarpals and the proximal
phalanges of the digits .
basic patient
details and
statement of
presenting
problem.
Onset
and
Duration
Where
Progression
Quality
Quantity
Aggravating
factors
Alleviating
factors
Beliefs
Physical
Examination
of the hand
Causes
not fully understood
Complications
Haematological
Anemia of chronic disease
Iron deficiency anemia
Bone
marrow
hypoplasia
with
anemia
Vasculitis
Digital arteritis
Ulcers
Cardiac
Pericarditis
Myocarditis
Endocarditis
Pulmonary
Pleural effusions
Bronchiolitis
Neurological
Cervical cord
compression
Peripheral
neuropathy
Systemic
Fever
Weight loss
Susceptibility to infection
Lymphatic
Splenomegaly
Musculoskeletal
Osteoporosis
Bursitis
Pathophysiology
Autoreactive T cells
are activated by
antigen-presenting
cells presenting
self-peptide to CD4
cells.
Macrophages exacerbate the
disease by secreting TNF
usually found in rheumatoid
synovial tissues, resulting in
cartilage destruction via effects
on chondrocytes
Rheumatoid
factors are
released as a
consequence to
the activation
of B cells.
Macrophages also release
the chemokine IL-8 which
recruit neutrophils that
cause more damages to
the tissues
Inflammation
Cartilage damage
and joint space
narrowing
Bone erosion
During the process of the
disease, cells are damaged
releasing anti-DNA. RF then
binds the DNA-anti-DNA
forming a complex that binds
and damages basement
membranes.