When should you worry about limping with limb length discrepancy?

The body may compensate for different leg lengths by tilting the pelvis, bending the knee, or spending less time on one leg. This can create an uneven stride and discomfort in the hip, knee, back, or foot. A limp that appears suddenly, changes quickly, or follows an injury should not be attributed to leg length difference without an examination. Measurements can also vary with posture and joint position.

Keep a note of which side feels shorter, where pain occurs, and whether the limp changes with shoes or activity. Wear supportive, familiar footwear and avoid adding lifts or making large shoe changes without professional guidance. A clinician or physiotherapist can assess walking, check the joints, and decide whether a measured correction, exercise plan, or observation is suitable.

Arrange prompt care for a rapidly worsening limp, new weakness or numbness, severe pain, inability to bear weight, or symptoms after a fall. Urgent advice is needed if a leg looks deformed, becomes cold or discoloured, or pain is accompanied by fever and a hot swollen joint.

Ask how the difference was measured, whether the limp is coming from the leg length or another joint, and whether a lift could help. Ask which symptoms mean the measurement or treatment should be reviewed.