Hand Conditions and Injuries Flashcards
What is a mucous cyst?
An outpouching of synovial fluid from the DIP joint
What is a ganglion?
An outpoutching of the synovial cavity
Where do ganglions commonly appear?
Wrist
What occurs in trigger finger syndrome?
Tendon running within flexor tendon sheath swells and gets caught on A1 pulley
How is trigger finger managed?
Steroid injection between tendon and fibrous sheath
Surgery (divide A1 pulley)
What is DeQuervain’s tenosynovitis?
An inflammation at the extensor tendons at the wrist near the base of the thumb
What test is useful in DeQuervain’s?
Finklestein test
How is DeQuervain’s treated non-surgically?
NSAIDs
Splint
Steroid injection
How is DeQuervain’s treated surgically?
Decompression - sheath is divided
What is Dupuytren’s contracture?
Thickening and contracture of subdermal palmar fascia causing fixed flexion deformity
In Dupuytren’s there is a dysplasia of the fibres. True/false?
False - metaplasia from fibroblasts to myofibroblasts
In Dupuytren’s, MCP involvement has a better prognosis than PIP involvement. True/false?
True
How is Dupuytren’s mainly treated?
Surgical fasciectomy
What is paronychia?
Infection within the nail fold
Flexor tendon sheath infection is a surgical emergency. True/false?
True
What is degloving in terms of trauma?
When the top and bottom layers have separated
A Boxer’s fracture involves a fracture of which finger?
Little finger
What is the clinical sign of mallet finger?
Resisted finger extension
What happens in Bennett’s fracture?
Base of the thumb is being pulled down
Which tendon zone injury has the worst patient prognosis?
Zone II
How is function of the flexor digitorum profundus assessed?
By holding PIP straight and asking patient to bend the tip of finger
How is function of the flexor digitorum superficialis assesed?
By holding other fingers straight and getting the patient to bend finger
What must be done in patients with mutilating injuries?
Keep it clean
Establish vascularity
Remove necrotic tissue
What are eschars?
Thick leathery bits of skin that form after burns and cause contraction
