MD11 and DC10 main gear is fused at the trunnion pins that attach the main gear to the structural trunnion fitting on the rear spar however as far as I know this is designed to protect the wing against rupture caused by high drag loads such as an off runway incident not high vertical loads. The forward attachment pin is designed to fail allowing the gear to fold rearwards away from the fuel tanks. The L1011 uses exactly the same main gear attachment and fusing arrangement as the DC10/MD11. Possibly the design requirement only requires protecting the wing from such off runway incidents.