posteromedial

Tibial Stress Fractures

EpidemiologyTibial Stress Fracture

 

Athletic / high impact exercises

 

Aetiology

 

First described in ballet dancers (Burrows 1956)

- tension side of bone / lateral side

- progression to complete fracture has been well documented in athletes

 

Signs

 

Point tenderness

- lateral aspect of tibia

 

Over time develop bony lump

 

Arthroscopy

Portals

 

1.  Anterolateral

 

Viewing portal

- 1cm lateral to patella tendon

- 1cm above joint line

- 1 cm below inferior pole patella

 

Problems

- too medial, in fat pad

- too high, limitation by patella, difficult to see posterior horns

- too low, damage anterior horn meniscus

 

Limitations

- PCL

- anterior horn LM

OCD

DefinitionTalus OCD MRI Coronal

 

Fracture talus through articular cartilage into subchondral bone

- 2° force transmitted from distal tibia

 

Osteochondritis dissecans v osteochondral fracture

 

Epidemiology

 

6% ankle sprains

Average age = 25 

M > F

 

Location