Did the part fail from wear, or did something break?? Also, which end failed, inner or outer, or did it just break in the middle?
Tie-rod failure is very rare, almost unheard of. Since this is a critical safety related part, they are usually somewhat over-designed…
An exception might be some sort of impact damage which happened earlier but was forgotten at the time.
The broken part will have to be removed and closely examined to determine exactly what failed and why…