Rear Delivery Systems: Ergonomic Issues & How to Fix Them

Rear delivery units are common and can be great—when you have an assistant. But when you're working solo without proper technique training? They can be a nightmare for ergonomics. These setups are designed for four-handed dentistry, which means they don’t always support the best posture or workflow for clinicians working alone.

If you’re constantly twisting, reaching, or feeling the strain of working with a rear delivery unit on your own, don’t worry—there are ways to make it work better for you!

(photo of rear delivery unit from Midmark)

Here are a few simple adjustments that can improve your posture and reduce strain (read to the end for my video tutorial demonstrating these tips):

1️⃣ Swivel the Chair

Swivel your chair (top open up more space at 12:00) and bring your setup closer so that your tools are within easy reach. This small adjustment can significantly reduce unnecessary strain on your back and shoulders. You can also physically push the patient chair towards the front of the op (if there's space). Even just an inch or two can make a difference!

2️⃣ Practice Hand-Passing Instead of Twisting

Without an assistant, it’s easy to fall into the habit of constantly turning and reaching for your instruments. Instead, try the hand-passing technique—pick up and transfer instruments using your closest hand, passing to the hand that needs them, rather than twisting and reaching. Keeping your motions controlled and efficient will help protect your posture.

3️⃣ Consider Using a Mobile Cart

A mobile cart can be a game-changer for solo clinicians. Placing your instruments on a rolling cart beside you allows for better balance and accessibility without the need to reach behind/to the side constantly. If you’re looking for an affordable option, I’ve linked a few budget-friendly carts in my “Dental Must-Haves” Amazon list to help you get started.

Take Your Ergonomics to the Next Level

If you’re looking for more guidance on operator positioning, posture, and overall ergonomics, check out my Operator Positioning Course! It’s packed with actionable tips on posture, stool adjustments, clock positions, and more to help you work smarter, not harder and a video just for rear delivery units!

Learn more about operatory delivery systems here

👉 Enroll here: Operator Positioning Course

By making a few small adjustments, you can work more comfortably—even solo with a rear delivery unit!