Review Question - QID 3991

Figure A shows a Moore Type II fracture. Moore type II fractures consist of fractures involving the entire tibial condyle, where the fracture line begins in the opposite compartment and extends across the tibial eminence.

A number of classification systems are used to describe tibial plateau fractures. The main classification systems that are widely used include Schatzker, AO/OTA, Hohl and Moore. The Moore classification describes high energy fracture-subluxation injuries of the knee. This is thought to have clinical implications as the type of fracture pattern can indicate an associated soft-tissue injury.

Moore retrospectively reviewed over a 1000 proximal tibia fractures to devise a classification systems based on the characteristic of five types of tibia plateau fracture patterns. He believed this system helped to better understand knee instability and concomitant soft-tissue injury. For example, Moore Type III fractures (rim avulsion) are associated with a high rate of neurovascular injury.

Figure A shows a fracture involving the entire tibial condyle. Illustration A shows a schematic diagram of the Moore classification (I - V). Illustration B shows a table that describes the Moore classification (I - V).

Incorrect Answers:
Answer 1: Moore Type I is a coronal split fracture of the medial tibia plateau which displaces distally. It does not cross over to the contralateral side of the eminence.
Answer 3: Schatzker Type III is a pure lateral plateau depression.
Answer 4: Schatzker Type V is a bicondylar fracture where the metaphysis and diaphysis remain intact.
Answer 5: OTA type 41B3 is a partial articular fracture with a split-depression of the unilateral plateau.