Orthopaedics Flashcards
Rotator cuff muscles (SITS) and function?
Supraspinatus
→ abduction
Infraspinatus
→ external rotation
Teres minor
→ adduction and external rotation
Subscapularis
→ adduction and internal rotation
Features of a rotator cuff injury?
Painful arc (60°-120°)
Muscle weakness
Tender anterior acromion
Axillary nerve roots, motor function and common mechanism of injury?
C5, C6
Shoulder abduction
Humeral neck fracture or anterior dislocation
Radial nerve roots, motor function and common mechanism of injury?
C5-T1
Arm extension
Humeral midshaft fracture
Median nerve roots, motor function and common mechanism of injury?
C6-T1
LOAF muscles
Wrist lesion e.g. fracture, carpal tunnel
LOAF muscles?
Lateral two lumbricals
Opponens pollis
Abductor pollis brevis
Flexor pollis brevis
Ulnar nerve roots, motor function and common mechanism of injury?
C8-T1
Intrinsic hand muscles except LOAF, wrist flexion
Medial epicondyle fracture
Long thoracic nerve roots, motor function and common mechanism of injury?
C5-C7
Serratus anterior
Chest trauma, mastectomy complication
Nerve affected in wrist drop vs claw hand vs winged scapula?
Wrist drop = radial
Claw hand = ulnar
Winged scapula = long thoracic
Colles’ fracture features and mechanism?
A “dinner fork” deformity
Transverse fracture of the radius
Dorsal (posterior) displacement
Mechanism = FOOSH
Smith’s (reverse Colles’) fracture features and mechanism?
A “garden spade” deformity
Transverse fracture of the radius
Volar (anterior) displacement
Mechanism = FOOSH
Bennet’s fracture feature and management?
Intra-articular fracture of the thumb base
Management = casting (stable), ORIF (unstable)
Galeazzi fracture features and mechanism?
GRUsome MURder
Distal radial fracture
Dislocated ulnar head
Mechanism = FOOSH
Monteggia’s fracture features and mechanism?
GRUsome MURder
Proximal ulnar fracture
Dislocated radial head
Mechanism = FOOSH
Feature and management of scaphoid fracture?
Pain in the anatomical snuffbox
Management = splint + fracture clinic review
List some paediatric fractures?
Buckle fracture
Greenstick fracture
Salter-Harris (growth plate) fracture
General fracture management?
Reduce, immobilise, rehabilitation:
Reduce = manual, closed, ORIF
→ only required if displaced or angulated
Immobilise = casting, splinting, K-wires, screws
Rehabilitation = movement as early as possible
Features and management of compartment syndrome?
Disproportionately severe pain
Pallor, pulseless, paralysis
PMH limb trauma
Management = fasciotomy + analgesia
Features and management of Dupuytren’s contracture?
Fixed flexion of the fingers
Ring and pinky most affected
Management = physiotherapy, fasciectomy
Features and management of carpal tunnel syndrome?
Tingling/numb thumb, index and middle digit
Thenar eminence wasting
Tinel’s and Phalen’s test +ve
Management = conservative and steroid injection (mild-moderate), surgical decompression (severe)
How is surgical decompression of the median nerve achieved?
Division of the flexor retinaculum
Features and management of cubital tunnel syndrome?
Tingling/numb ring and pinky digit
Worse leaning on affected elbow
Management = conservative and steroid injection (mild-moderate), surgical decompression (severe)
Features and management of De Quervain’s tenosynovitis?
Pain at the thumb base
Tender radial styloid process
Finkelstein’s and Eichhoff’s test +ve
Management = conservative and steroid injection (mild-moderate), surgery (severe)
Features and management of trigger finger?
Stiffness and snapping when extending digit
Nodule at the base of affected finger
Management = conservative and steroid injection (mild-moderate), surgery (severe)
Features and management of a ganglion?
Firm, well-defined mass that transilluminates
Management = usually self-resolving, surgery if persistent or neurovascular complications
Features and management of lateral epicondylitis (tennis elbow)?
Tenderness over lateral epicondyle
Worse on resisted wrist extension and forearm supination
Management = conservative, steroid injection, physiotherapy
Features and management of medial epicondylitis (golfer’s elbow)?
Tenderness over medial epicondyle
Worse on wrist flexion and forearm pronation
Management = conservative, steroid injection, physiotherapy
Groups with higher risk of adhesive capsulitis?
Diabetics
Middle-aged women