Knee Injuries Flashcards
What is a ligament
Collagen around a joint anchored to bone at each end
Compared to tendons ligaments have?
Lower and less organised collagen
Higher proteoglycan
High H20
Rounder fibroblast
How to Rx ligament rupture
Conservative if no instability
Surgery if multiple / sportsman etc
What is a tendon?
Originates at muscle and attaches to bone
Symptoms of tendon degeneration?
Painful
Swollen
Precursor to rupture
Symptoms of tendon rupture?
Pop in ankle + pain in ankle and calf
Palpable gap
+ve Simmonds (when squeeze calf ankle contracts)
USS
What causes Achilles tendon rupture
Pushing of weight bearing foot with extended knee
Unexpected dorsiflexion of ankle
Dorsiflexion of plantar flexed foot
What is the Rx for rupture
Mobilise if partial
Conservative - splint cast
Surgery
When do you do conservative Rx
If not intra articular
If ends can be opposed
When do you do an operation
If intra-articular
IF high risk of re-rupture
If ends cannot be opposed
What is Quervain’s Tenovaginitis
Inflammation of the tendon of EPB and APL passing through radial tendon sheath
What are the symptoms
Swollen Tender Hot Red \+ve Funklestein's
What is enthesiopathy
Inflammation of tendon
Usually at muscle origin rather than insertion to bone
What are examples
Plantar fasciitis
Humeral epicondyltis
Traction apophysiitis
What is Traction Apophysiitis / Osgood Schlatters
Inflammation at insertion of patellar tendon into anterior tibial tuberosity
Who gets it
Adolescent active young boys
What are the symptoms
Anterior knee pain worse when kneeling
Enlarged tender tubercle
How do you Dx and Rx
X-ray
Self limiting
What type of fibres transmit cold and sharp pain
Ad
What fibres transmit dull warm pain
C (slow and small)
What fibres transmit touch / pressure
Ab
Can peripheral nerves regenerate
Yes
What is neuropraxia
Nerve stretched or bruised and in continuity
Closed injury
Good prognosis
Spontaneous recovery
What is axontmesis
Endoneurium intact (surrounds axons) Axons disrupted Closed injury - crush of blow Wallerian degeneration follows Sensory recovery better than motor
What is Neurotmesis
Complete nerve division Laceration or avulsion Epineureum around whole nerve damages No recovery unless direct suturing or graft Poor prognosis Open injury