Are foam dog stairs or a ramp better for an older dog with joint problems?

Across the reviewers we read, ramps and gently curved foam stairs are most often recommended for senior dogs and those with joint pain, because a continuous or low-rise incline avoids the impact of stepping down. Community threads on r/dogs note many older dogs adapt faster to a wide, gradual surface than to steep steps, but they also stress training the dog on it early. Traction matters as much as slope, so look for non-slip surfaces and a base wide enough not to shift.