Who should you ask about using heel lifts?

Several types of professionals can diagnose LLD, but they're not all equal in what they can measure, what they can treat, and how accurate their methods are. Here's how they stack up:

Orthopedic Surgeon — the definitive diagnosis

This is the gold standard, especially for structural LLD (where the bones themselves are actually different lengths). An orthopedic surgeon can order a scanogram — a specialized full-length standing X-ray from hip to ankle — which gives the most precise bone-length measurement available. If your discrepancy is significant (generally over 2cm), or if you need to rule out bone disease, growth plate issues, or post-surgical changes, an orthopedist is where you need to start. They're also the only ones who can surgically correct the problem if it comes to that.

Podiatrist — best for foot and ankle-related LLD

Podiatrists deal with leg length discrepancy routinely because it shows up constantly as foot, ankle, and lower leg problems. They're well-qualified to measure LLD, prescribe custom orthotics and heel lifts, and manage the downstream effects on the feet. If your symptoms are showing up as foot pain, uneven shoe wear, Achilles issues, or plantar fasciitis, a podiatrist is often the most practical first stop — and many will co-manage with an orthopedist if imaging is needed.

Chiropractor — best for functional LLD

There's an important distinction here. Structural LLD means the bones are literally different lengths. Functional LLD means the legs measure the same but the body is behaving as if one is shorter — usually because of pelvic tilt, sacroiliac dysfunction, muscle imbalances, or spinal misalignment. Chiropractors are arguably the most likely professionals to routinely screen for LLD in adults, and they're very well-suited to diagnosing and treating functional discrepancies. They can also order X-rays. Where they're limited is in diagnosing and treating true structural bone-length differences, which may need orthopedic involvement.

Physical Therapist — best for functional assessment and treatment

Physical therapists are skilled at identifying LLD through gait analysis and functional testing, and they're excellent at treating the muscular compensations that develop around a discrepancy. They tend to be the most thorough at assessing how the body is moving and adapting. However, PTs typically can't order imaging themselves, so for a definitive structural measurement they'll refer out. Think of them as essential partners in treatment, and good first-line screeners.

Osteopathic Physician (DO) — structural and functional combined

DOs trained in osteopathic manipulative medicine (OMM) are specifically trained to assess both structural and functional LLD and to distinguish between the two — which matters a lot for deciding what treatment is appropriate. An osteopathic physician who actively practices OMM is an underrated option that many patients don't think of.

Primary Care Physician (MD/DO) — fine as a starting point

Your family doctor or GP can do a basic screening measurement and refer you appropriately. They're not typically the ones doing the detailed assessment, but they're a perfectly reasonable first conversation, especially if you want imaging ordered and a referral to a specialist.

Practical Advice

The type of discrepancy you have determines who you need:

• If you suspect a true structural difference (one leg actually shorter in the bone) — start with an orthopedic surgeon or podiatrist who can order imaging.

• If your symptoms suggest a functional or postural issue (pelvis tilts, back pain, uneven muscle tension but no obvious bone difference) — a chiropractor or physical therapist is often the fastest and most practical route.

• If you've had hip or knee replacement surgery and now have a leg length difference — go back to your orthopedic surgeon first.

• If you're not sure which type you have — any of the above can screen and refer you appropriately.

One important note: the most accurate measurement method across all these professionals is a standing full-length X-ray (scanogram). A tape measure from hip bone to ankle is better than nothing, and the block test (placing measured blocks under the short leg until the pelvis levels) is a reliable clinical screening tool — but imaging is the only way to get a truly precise bone-length measurement when it matters.