MSK Flashcards
Using TIM, which conditions must be excluded before an MSK complaint is discharged?
Tumour/trauma
Infection/inflammation
Malignancy/Mechanical/Metabolic
What is the function of osteoblasts?
Produce osteoid composed of type 1 collagen, mineralization of matrix
What is the function of osteoclasts?
Remove bones tissue by removing mineral matrix and breaking organic bone
How are synovial joints composed?
Covered by hyaline cartilage with joint space enclosed by synovium
How does an inflamed synovium affect bone?
Excessive fluid with altered cells and increased cytokines = destroys hyaline cartilage then bone
What is an enthesis?
Point of insertion of tendon, ligament, fascia or joint capsule into bone, prone to stresses
Give one example of an inflammatory and non-inflammatory primary muscle disease
I: dermatomyositis
NI: Muscular dystrophy associated with calf hypertrophy
What is Gower’s sign and which condition is it strongly associated with?
Functional weakness seen classically in DMD where pt. uses hands to splint legs to help them rise from sitting
Give 4 MSK history red flags
- Unable to sleep, unremitting pain
- Deep pain unresponsive to pain relief
- Loss of function or altered function
- Unilateral
What are the top 3 organisms implicated in septic arthritis?
Staph aureus
Strep. pneumo
Haem influenza
How may a joint appear in septic arthritis?
Hot Swollen Exquisitely painful Red Held immobile
In neonates, what is pseudoparalysis until proven otherwise?
Bone/joint sepsis
Give 4 Tx steps in septic arthritis
- ABC and resus
- Urgent aspirate
- Blood cultures x2
- IV ABX
How does osteomyelitis classically present?
Acutely unwell child
Pyrexia
Local erythema + tenderness
Give 3 Tx steps in osteomyelitis
- Blood cultures
- High dose IV ABX
- Splintage of limb