Background
Anatomy / Biochemistry
Constituents of cartilage
Extracellular matrix (proteogylcans + collagen + water) + chondrocytes
Extracellular matrix (proteogylcans + collagen + water) + chondrocytes
Intermediate grade chondroblastic osteosarcoma arising from surface of long bones
Extremely rare
- 1% of all osteosarcomas
- 25% of surface osteosarcomas
Age 15-25
Typically anterior proximal tibia
- diaphysis of major long bones
- humerus
Ossification of the posterior longitudinal ligament (OPLL)
Heterotopic ossification of the posterior longitudinal ligament
2:1 Male:Female
More common in Japanese and East Asian populations
Superior articular process fracture
- potentially unstable
Inferior articular process fracture
- thought to be more stable
Injury to ulnar collateral ligament of thumb MCPJ
Interferes with pinch grip and grasp and thumb is ineffective as a post
Athletes with increase activity / distance
Women with eating disorders / amenorrhea
Compression / inferior neck
- < 50% protective weight bear
- > 50% emergent ORIF
Tension side / superior neck
- emergent ORIF