56 results
Malignant Bone Tumors: Pathogenesis of X-ray appearance

 • Metastatic bone tumors (aka. cancerous cells from systemic
Malignant Bone Tumors ... • Metastatic bone ... • Metastatic bone ... Signs/Symptoms: ... #Diagnosis #XRay
Primary Bone Tumors - Differential Diagnosis Algorithm 

Metastatic - Most common tumour in adults
 - Breast
Primary Bone Tumors ... • Aneurysmal Bone ... Histiocytoma #Primary #Bone ... #Bony #Tumors # ... Tumours #MSK #Differential
Diagram of different types of bone tumors that can occur around the knee on XRay -
different types of bone ... blade of grass sign ... ) • Enostosis/bone ... docskalski #Knee #Bone ... #Tumors #Diagnosis
Diagram of different types of bone tumors that can occur around the knee on XRay -
different types of bone ... Simple/unicameral bone ... • Aneurysmal bone ... docskalski #Knee #Bone ... #Tumors #Diagnosis
Diagram of different types of bone tumors that can occur around the knee on XRay
Age <
different types of bone ... Simple/unicameral bone ... • Aneurysmal bone ... blade of grass sign ... #Diagnosis #Radiology
Bone Tumor Location within the Skeleton

Epiphysis: 
Only a few lesions are located in the epiphysis, so
Bone Tumor Location ... degenerative subchondral bone ... #Bone #Tumor #Location ... #MSK #Differential ... #Bony
Stress Fracture: Pathogenesis and clinical findings
Abnormal biomechanics, Repetitive impact activities
=> Repetitive subthreshold mechanical loading
=> Bone strain
=>
mechanical loading => Bone ... strain => Bone ... StressFractures #msk ... #orthopedics #pathophysiology ... #symptoms #signs
Spondylolysis & Spondylolisthesis: Pathogenesis and Clinical Findings

Pars interarticularis stress fracture (spondylolysis) - most frequently in the
tenderness • Positive one-legged ... XR — scotty dog sign ... Spondylolisthesis #MSK ... #diagnosis #pathophysiology ... #signs #symptoms
Osteoarthritis (OA): Clinical findings
 • Stimulation of joint nociceptors in subchondral bone -> Pain with loading
in subchondral bone ... architecture -> Palpable bony ... contact between bony ... Osteoarthritis #OA #pathophysiology ... #diagnosis #signs
Hyperparathyroidism - Primary vs Secondary vs Tertiary 
Lab Comparison:
 • Primary Hyperparathyroidism: ↑→PTH, ↑Calcium, ↑Vitamin D,
Symptoms: Commonly no signs ... easily/weakness, Bone ... /joint pain Psychiatric ... Hyperparathyroidism #diagnosis ... Secondary #Tertiary #pathophysiology