The Semont Maneuver: How It Works
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The Semont maneuver — also called the liberatory maneuver — is the main alternative to the Epley for posterior-canal BPPV. Instead of rotating you step by step through four positions, it swings you rapidly from lying on one side to lying on the other, using momentum as well as gravity to fling the crystals out of the canal.
It targets the same problem in the same canal, and success rates in studies are broadly comparable to the Epley. Clinicians tend to choose between them based on the person in front of them rather than on evidence of superiority.
The three positions, for right-ear BPPV
Mirror everything for left-ear BPPV.
| Step | Position | Hold |
|---|---|---|
| 1 | Sit on the edge of the bed. Turn the head 45° to the left — away from the affected ear. | — |
| 2 | Lie down rapidly onto the right side (the affected side), keeping the head turned. You end up looking up at the ceiling, nose pointing upwards. | Usually 1–3 minutes, or until the spinning settles |
| 3 | Swing rapidly through the sitting position and down onto the left side, without changing the angle of the head on the body. You now end up nose-down towards the bed. | Usually 1–3 minutes |
| 4 | Return slowly to sitting, chin slightly tucked. | Sit still for a minute |
Semont or Epley?
| Epley | Semont | |
|---|---|---|
| Movement | Sequential rotations while lying on the back | A rapid side-to-side swing through sitting |
| Neck extension | Needs the head to hang back below horizontal | Little to no neck extension required |
| Speed | Can be done slowly and gently | Speed is part of the mechanism |
| Suits | Most people; easier to teach for home use | People who can’t extend the neck, or when the Epley hasn’t worked |
| Harder for | Neck problems, limited neck movement | Larger body size, back problems, limited mobility, doing it alone |
In practice the Epley is the more common first choice, largely because it’s gentler and easier to teach people to repeat at home. The Semont comes into its own when neck extension is the obstacle, or as the next thing to try when a correctly performed Epley hasn’t resolved things.
Variations you might hear about
Modified versions exist — some clinicians use a “Semont-plus” with a steeper head position, and there are adapted forms for people who can’t move quickly. There’s also a version taught for home use in some clinics, but that’s a decision for the clinician who assessed you, not something to adopt from a video.
What to expect afterwards
As with the Epley, strong spinning during the maneuver is expected and usually the sign it’s doing something. The old advice about staying upright for 24 to 48 hours afterwards has largely not held up in later research, though taking it easy for the rest of the day is sensible — see what to do after a repositioning maneuver. Mild unsteadiness lasting days after the spins stop is common and is covered in residual dizziness.
See the home routine →
FAQ
Is the Semont maneuver better than the Epley?
Studies generally find comparable success rates for posterior-canal BPPV. The Epley is chosen more often because it’s gentler and easier to repeat at home; the Semont is useful when neck extension is a problem.
Can I do the Semont maneuver at home?
It’s harder to self-perform than the Epley, because the speed of the swing and keeping the head angle fixed are both part of the treatment. Some clinics teach a home version to specific patients, but it should come from the clinician who assessed you.
How long do you hold each Semont position?
Commonly one to three minutes per position, or until the provoked spinning settles. Protocols vary between clinics.
Does the Semont maneuver hurt?
It shouldn’t, but it provokes intense spinning for a short period and can cause nausea. Tell the clinician about neck, back or shoulder problems beforehand, since the movement is brisk.
