MSK notes Flashcards
What makes up the LOAF muscles?
Lumbricals (1&2)
Opponens Pollicis
Abductor Pollicis Brevis
Flexor Pollicis Brevis
innervated by median nerve
Describe innervation of intrinsic hand muscles?
all intrinsic hand muscles innervated by ulnar apart from the LOAF ones.
smiths fracture
fracture distal radius with anterior displacement
Wallerian degeneration
- axonal degeneration at site of injury
- myelin sheath degenerates
- then phagocytocysed by tissue macrophages
Hirutism vs hypertrichosis
Hirutism - androgen dependent hair growth
Hypertrichosis - androgen independent
Trendelenburg gait
- superior gluteal nerve
- gluteus medius affected
- nerve side effected is OPPOSITE to side of pelvic drop
What may be seen in surgical neck of humerus fracture?
- axillary nerve damage
- difficulty abducting arm
- loss of sensation of deltoid
Sharpey’s fibres
- periosteum attached to bone by strong collagenous fibres
Feature of rheumatoid arthritis
- cholesterol deposition in nodules
- often spares DIPs
triad for reactive arthritis
- Conjunctivitis
- Arthritis
- Urethritis
Describe septic arthritis common culprit?
- stap aureus
describe septic arthritis?
- single, red, swollen, painful joint
- yellow turbid synovial fluid
- invasion of synovial membrane
Describe key features of osteoarthritis?
- shorter duration of morning stiffness
- often worse after movement
- loss of joint space
- subchondral sclera
- osteophytes
Psoriatic arthritis
- sausage digits
- nail changes
- pencil in cup deformity
- psoriasis: think purple plaques bilateral elbows
Onchylosis
detachment of the nail from nail bed
Salter-Harris fracture
fracture to growth plate of child
What nerve may be affected during excision of the submandibular gland?
- marginal mandibular nerve
Branches of axillary nerve? (3)
- posterior circumflex humeral
- subscapular
- anterior circumflex
Long head of triceps attachment
infraglenoid tubercle
Contents of cubital Fossa (lateral to medial)
really need beer to be at my nicest ; )
Radial Nerve
Brachial Tendon
Brachial artery
Median nerve
Describe clinical features of giant cell arteritis?
- jaw pain
—> BS restriction, anaerobic resp, increase in
[lactic acid] - amaurosis fugax
- –> temporary loss of vision in one eye
amaurosis fugax
temporary loss of vision in one eye
what passes through the quadrangular space?
- axillary nerve
- –> posterior circumflex artery
note: posterior circumflex is a branch of axillary
A 16-year-old boy is on a date at the cinema, throughout the film he has his arm over his girlfriends seat. When the film ends he finds that he cannot move his wrist very well. On examination he cannot extend his wrist and his anatomical snuff box has reduced sensation. Which nerve has he damaged at the cinema?
A radial nerve palsy is commonly refereed to as a wrist drop.
This is a mononeuropathy which results in the patient being unable to extend their wrist and instead it hangs flaccidly.
saturday night syndrome