The present application is generally directed to vertebral implants and implant trials for use with vertebral implant assemblies. The vertebral implants and implant trials may be used in conjunction with corpectomy procedures. One type of vertebral implant is a corpectomy device having a polyaxial endplate assembly. The polyaxial endplate assembly includes an articulatable plate member that is capable of angulation. The articulatable plate member can be fixed in place by, for example, using a clamping assembly to fix the articulatable plate member.