Classification of Hohl for Fractures of the Tibial Condyles

 

Parameters:

(1) displacement of the fracture

(2) depression

(3) features of the fracture

Displacement	Depression	Fracture	Type
undisplaced	no or minimal	split and no comminuted fragment	A
displaced	local depression single condyle (central)	comminuted, mosaic-like depressed fragment	B
displaced	local depression single condyle	split fragment and comminuted depressed fragment	C
displaced	total depression single condyle	split and no comminuted fragment	D
displaced	no or minimal	split	E
displaced	total depression both condyles	comminuted both condyles	F

 

where:

• The Type is according to the component figure in Figure 1, page 1456).

 

Type A (undisplaced): There is minimal displacement (0 - 3 mm) with little disruption of the articular surface. Collateral and/or cruciate ligament ruptures may be present.

 

Type B (central local depression): Depression of the subcondylar bone without split fracture.

 

Type C (split local depression): Depression of subcondylar bone plus split fracture of outer condylar surface.

 

Type D (total depression): The entire condyle is displaced distally and laterally, with angular deformity of the knee. There is no comminution of the articular surface.

 

Type E (split, without depression): The split fracture involves the anterior or posterior condylar margins.

 

Type F (comminuted upper tibia): Both condyles are disrupted, and corresponds to "T" or "Y" fracture. There may be transverse subcondylar fracture. There is considerable damage to the menisci and the articular surface.