Bimalleolar and Trimalleolar Fractures

Bi Malleolar fracture

 

Definition

 

Medial Malleolus and Lateral Malleolus fractured

 

Ankle Fracture BimalleolarAnkle Fracture Clear Syndesmotic Injury

 

Management

 

Superior results with operative management

 

Surgery

 

1. Weber B + medial malleolus fracture

 

Fibula

- interfragmentary lag screw

- derotation 1/3 tubular plate

 

Medial malleolus (dependant on fragment size)

- 2 partially threaded lag screws

- 1 screw and one k wire

- TBW

 

Screen syndesmosis

- should be stable with Weber B

- stress view (ER and dorsiflexion)

- cotton test (clamp on fibula and attempt to open syndesmosis under II)

 

Ankle Fracture Bimalleolar ORIFAnkle Fracture Bimalleolar ORIFAnkle Fracture Diastasis Screw

 

2.  Fibular fracture + posterior malleolus

 

Fibular plate versus nail

 

Walsh et al Foot Ankle Surg 2022

- meta-analysis of RCTs of plate versus fibular nail

- no difference in outcome or healing rates

- reduction in complications with nail

 

Tri-Malleolar Fracture

 

Definition

 

Lateral malleolus + medial malleolus + posterior malleolus