Ortho rest Flashcards
what is subacromial impingement syndrome
irritation and inflammation of rotator cuff tendons (esp supraspitnatus) as they pass through the subacromal space
what are causes of subacromial impingement syndrome
Intrinsic:
- muscle weakness (rotator cuff weakness > imbalanced forces > humerus rotates)
- hounder overuse (inflammation > reduced space)
- degenerative tendinopathy (acromium degeneration > cuff tear)
Extrinsic
- glenohumeral instabiklity
- anatomical variation
what are signs and symptoms of subacromial impingement syndrome
painful arc (esp overhead activities)
decreased range of movement
weakness
hawkins +ve
list differentials for a painful arc
- subacromial
- frozen shoulder
- rotator cuff tear
- OA
- septic arthritis
- gout/pseudogout
- RhA
How do you investigate subacromial impingement
XR (true AP, caudal tilt, supraspinatus outlet)
CT arthrography /USS
MRI (RCM and tendons)
How do you manage subacromial impingement
conservative: rest, physio
medcal: NSAID, steroid into subacromial bursa
Surgical: arthroscopic acromioplasty
what is calcific tendonitis
calcification of tendons
unknown aetiology
stages of calcific tendonitis
- pre-calcific (pain free)
- calcific (pain gradually increases)
- post calcific
S/S calcific tendonitis
loss of ROM
Pain (catching / locking with crepitus)
supraspinatus atrophy
Hawkins positive
Ix calcific tendonitis
XR (calcific deposiits)»_space; US
Management of calcific tendonitis
non-operative: analgesia, phyiso, ECST, USS guided injection
Operative: surgical decompression
what are the four muscles in the rotator cuff
supraspinatus
infraspinatus
subscapularis
teres minor
what is the function of the rotator cuff muscles
to STABILISE the shoulder jount
what are RF for rotator cuff tears
age, smoking, FH, hypercholesteraemia
what are symotoms of rotator cuff tear
painful arc (if partial tear)
if complete tear:
- shouldertip pain, full range of passve movement
- inability to abduct arm
- lowering the arm beneath 90 degrees causes a SUDDEN DROP (as this is supraspinatus role, which is torn)
management of rotator cuff tear
non-operatve: analgesia, physio, steroid injection
operative: shoulder arthroscopy, rotator cuff repair
how does rotator cuff arthropathy occur
rotator cuff tear > loss of joint congruence > abnormal glenohumeral joint > degeneration
What anatomical changes occur in rotator cuff arthropathy ?
rotator cuff insufficiency
glenohumeral joint dsestructon
subchondral osteoporosus
humeral head collapse
What are S/S of rotator cuff arthropathy
Night pain with weakness / stiffness
Limited range of movement, crepitus, inability to abduct
management of rotator cuff arthropathy
non-operative (analgesia, physio, subacromial steroid injection)
operative (arthroscopic debridement, hemiarthroèlasty ( reverse shoulder arthroplasty=
what is the medical term for frozen shoulder
Adhesive capsulitis
what is frozen shoulder – sx
FUNCTIONAL loss of ACTIVE and PASSIVE movement of shoulder with no clear cause (occasionally post-traumatic / post surgical)
external rotation most affected
who does frozen shoulder typically occur in
F>M, middle ages
pathophysiology of frozen shoulder
inflammatory process causing fibroblastic proliferation of the joint capsule
leads to mechanical block of motion
what are the three stages of FROZEN shoulder
- Freezing (gradual onset of pain, lasts up to 6 months)
- Frosen (stiff, decreased range of movement)
- Thawing (gradual return of range of motion, may last 5 months to 2 years)
What is the shoulder pain like in froaen shoulder
worse at night
cannot lie on affected side
How do you manage frozen shoulder?
NONE
it is self limiting
what is the difference between a dislocation and a sublaxation
dislocation = TOTAL non-articulation of the bone head in the joint
sublaxation: PARTIAL non-articulation of the bone head in the joint
how does shoulder dislocation present
shoulder contour lost (square shoulder)
bulging infraclavicular fossa
arm supported by hand + severe pain
How do you investigate shoulder dislocation
Assess NV status (axillary nerve in Chevron area) before manipulating
also do XR before and after manipulation
how do you manage shoulder dislocation
- Reduction (with sedation - traction method or stimson mthod)
- Rest in sling for 3/4 weeks
- Physio
complication of shoulder dislocation
- Axillary nerve palsy (at time of presentation due to trauma OR iatrogenic due to manipulation OR delayed onset due to hematoma)
- rotator cuff tear
- recurrent dislocation (<20yo)
where are bicep tendon ruptures most likely to occur
most in the LONG TENDON of the biceps
what are risk factors for bicep tendon ruptures
heavy overhead activities
shoulder overuse
smoking, steroids
what are S/S of biceps tendon rupture
POP sound
followed by pain, bruising, swe,ling
Popeye deformity (muscle bulk results in bulge in middle of upper arm)
Weakness in shoulder and elbow
what are ix for biceps tendon ruprure
biceps squeeze test
MSK USS
Urgent MRI if suspecged distal tendon rupture
what is the difference in presentation between lateral (tennis) epicondylitis and medial (golfer) epicondylitisa?
lateral (tennis) epicondylitis - pain is around LATERAL epicondyle, worse on wrist EXTENSION
medial (golfer) epicondylitis - pain is around medial epicondyle, worse on wrist FLEXION
How do you investgate epicondylitis
USS
How do you investgate epicondylitis
conservative (rest, NSAID gel, physio)
how does olecranon bursitis present
swelling over posterior elbow
associated pain, warmth, erythema
typically affects middle aged pts
what are conditions associated to carpal tunnel syndrome
Conditions causing tissue swelling:
- Pregnancy
- Acromwegaly
- AMyloidosis
Conditions causing tendon / nerve inflammation:
- DM (glycosilates the tendon=
- hypothyroidism=
- RA (esp bilateral)
what is carpal tunnel
compression of the median nerve within the carpal tunnel
how does CTS present
parasthesia in 3.5 fingers (palmar aspect)
shaking of hand relieves parasthesia
occasionally pain
weakness of hand when grasping objects
what does the median nerve innervate in the hand
sensory to 3.5 fingers (thumb, index, middle, 0.5 ring finger) palmar aspect
motor to flexors to hand
How do you assess for carpal tunnel syndrome
CLINICAL EXAM
EMG may be necessary
What does CTS clinical exam reveal
- weak thumb abduction
- wasting in theminar eminence
- Tinel’s sign: pressing the carpal tunnel causes parasthesia
- Phalen’s sign: flexion of wrist causes parasthesia
How do you manage CTS
conservative: rest the hand, wrist splints at night
surgical: corticosteroid injections > surgical decompression
what are EMG findings for CTS
AP prolongation in sensory and motor axons > allows to grade severity
what is de quervain’s tenosynovitis
the sheath (proximal to thumb) contaning extensor pollicis brevis and abductor pollicis longus become infected
symptoms of de quervain’s tenosynovitis
tenderness on radial side of wrist
Adbuction of thumb against resistance is painful
How does de quervain’s tenosynovitis present on examination
Finkestein test: pull thumb in ulnar deviation and longitudinal tractrion > pain over radial styloid and radial side of wrist
how do you manage de quervain’s tenosynovitis
activity modification
analgesia
steroid injection, thumb splint, surgery
what is a duptyren’s contracture
progressive, painkless, fibrotic thickening of palmar fascia
fibroblasts are replaced by myofibroblasts which cause contraction
how do you manage duptyren’s contracture
splinting
fasciotomy
collagenase injection
fasciecotomy
conditions associated with duptyren’s contracture
AIDS DM FH Booze Epilepsy and epilepsy meds e.g. phenytoin