Fibular fractures

 

Isolated Weber B Fibular Fracture

 

Management

 

Defined by presence / absence of deltoid ligament injury

 

85% deltoid ligament intact

 

Deltoid ligament injury

 

Examination Xray Stress xray
Tender / bruising medially Increased medial clear space

 Gravity Stress View

- patient lies injured side down with cross table xray

- increased medial clear space

 

Lead gloves / valgus stress / painful

Medial bruising Ankle Fracture Weber B + Deltoid Ligament Weber B
     

Weber B / intact deltoid ligament

 

Weber BWeber B

 

Management

 

Weber B / torn deltoid ligament

 

Bimalleolar equivalent

 

Weber BWeber B

 

Management

- ORIF fibular

- ensure medial joint space fully reduced

- may need to open medial joint / removed osteochondral fragments / deltoid ligament

 

Ankle Fracture Fibula ORIF Increased Medial Clear Space

 

Weber C fracture

 

Weber CWeber C

 

Issue

 

Syndesmosis disrupted

 

Management

 

Ankle Weber C Syndesmotic InjuryAnkle Weber C Syndesmotic Screw

Weber C + syndesmotic injury: ORIF + syndesmosis stabilization

 

Ankle Fracture Maisonnerve InjuryAnkle Fracture Maisonnerve Proximal Fibula

Maisonneuve injury: proximal fibula with open medial clear space

 

Intraoperative tests

 

Cotton test

Stress test

 

Reduction technique

- foot in neutral, clamp across medial and lateral malleolus

- don't reduce in plantarflexion as posterior talus is more narrow

- don't over reduce the joint

- check symmetrical joint space on mortise view

 

Options

 

Screw fixation Suture button

One or two screws

3 or 4 cortices

? remove

One or two
   

 

Ankle Broken Diastasis Screws