Table 2.

‘Surrey modification’ of Lauge-Hansen classification and treatment

Fracture type	NWB X-ray	WB X-ray	Deep deltoid ligament ATTL & PTTL components	Treatment
SER 2	Stable	Stable	ATTL & PTTL intact	Boot/brace & WB
SER 4a	Unstable	Stable	PTTL fully or mostly intact	Cast & WB for 6 weeks
SER 4b	Unstable	Unstable	PTTL ruptured	ORIF

Note. NWB, non-weight bearing; WB, weight bearing; ATTL, anterior tibiotalar ligament; PTTL, posterior tibiotalar ligament; ORIF: .