Orbital MS Stool


What is it?

The Orbital MS, otherwise known as the microsurgical option, has been designed to help microsurgeons who need to sit in a half-sitting/standing, forward-leaning position during operations. Apart from the height difference, the other key function of this chair that is different is the upper limb supports that have extra dampeners to give more frictional control for precise movements.

The chair is particularly helpful for users where there is limited floor space because the compact 4-wheel base takes up less space than traditional chairs/stools. In addition, the low centre of gravity of the base gives the operator a very stable and grounded feeling whilst still in a forward-leaning position.

Who does it help?

The chair has been built primarily for microsurgeons who spend long periods in forward-leaning positions. Primarily, the chair is designed to prevent injury and make surgery more comfortable, efficient, and safe.

Here is a more specific range of groups that this chair has been used for:

  1. People recovering from lower lumbar spinal fusion surgery.
  2. People looking to improve ergonomics and posture to prevent severe shoulder and neck pain and tension while working.
  3. Professionals who need to reduce or prevent lower back pain.
  4. Professionals recovering from rotator cuff damage

    Adjustability Credentials 

    Height: The Orbital MS was designed so it could be used at different height positions and can enable operators to get into a high perched position where they get the benefits of almost standing whilst still being able to offload their legs.

    Chest Support Height: The chest support is adjustable in height and was made slimline to allow surgeons to get as close as possible to patients. Height adjustments are made by turning the knob at the front of the pad, sliding it up or down and then retightening at the preferred position. An upholstered protective cover is also included.

    Slide and Tilt: The chairs also include what is described as a “slide-and-tilt system.” The tilt position can be adjusted with a micro-adjustable knob at the front. This is designed to try and control tilting of the pelvis in order to optimise spine position.

    The seat slide (set-back) is adjusted using the two pins on the seat track assembly, and this is designed to allow users to control how close they are to patients.

    Active Movement: The weighted compact base is designed to try and give you the flexibility of moving the chair when you want to with the feeling of stability when you need to make highly controlled upper limb movements.

    Aesthetic Credentials

    The Orbital MS has been designed to blend into surgical and dental environments. However, because of the neutral seat colour, it doesn’t look out of place in manufacturing and other types of industrial environments.

    The standard colour is black, but you can have a custom colour made to suit your space.

    Sustainability Credentials

    The chair is made from a number of durable parts. The wheels have been designed to be resistant to oil, chemicals, high temperatures, grease, and steam. The vinyl seat is tough and durable and made for heavy use.



    Brand: Orbital

    Seat height lowest: 63.5cm

    Seat slide adjustment: 6cm

    Seat height highest: 75cm

    Seat tilt: Yes

    Chest support adjustment range: 10cm

    Upholstery material : Vinyl

    Arm rest material: Aluminium

    Arm rest pad material: Leather

    Parts Warranty: 5 years 

    Weight: 21kg 

    Base width: 46 cm

    Base length: 56cm 

    Seat size: 43 cm X 29 cm



    Hands-Free Height Adjustment

    The Orbital MS gives you the option to have hands-free height adjustment which is operated by a foot pedal at floor level. This essentially means you can adjust the seat height whilst still maintaining sterility.


    Each chair can come with two dynamic armrests with leather armrest pads. The pads are concave to better hold and support your arm in a comfortable, stable position. To promote mobility, there are travel limiters and bearings built into the base of the armrests so that they can slide with ease while you work. The MS arms have additional dampeners built into the system to give extra control for precise movements. Additionally, they cater to various heights and arm lengths, as their height can be independently adjusted with a knob found at the centre pivot. Together, these features are designed to offload the shoulders whilst enabling functional working movements.

    Seat Shape

    You get to customise your chair by choosing from two options. 

    Option One: A flat double-density foam seat. This is designed to feel soft and supportive both when you are using the chest support and also in reverse when the supports for the chest and arm are not necessary, such as during a simple consultation. 

    Option Two: A saddle seat. The shape of the saddle drops the pelvis anteriorly which in turn facilitates a more upright posture. The saddle seat is upholstered in black vinyl and is built to last. 


    The standard colour that most customers get is black. If you have a specific colour requirement, please contact us.


      Orbital chairs take 3-5 weeks to deliver. For more information on our delivery policy, please see our terms and conditions.


      On non-bespoke items, you have 14 days from the receipt of goods ordered to return items for a full refund, excluding carriage and installation. The cost of returning goods to us is to be at your own expense. Please see our terms and conditions for more details on delivery and returns.


      The Orbital stools come with a 5-year warranty. Please see our terms and conditions for more details on the warranty.


      From what we know, no large, independent, gold-standard randomised controlled trials have been conducted to determine the long-standing benefits of any chair brand. As such, we look to what information is available to fill that gap. One small study in 2016 did look at the effects of an ergonomic dental stool with mid-sternum chest support on the activity of muscles in the lower back. Using surface electrodes, they found that activity in the back extensor muscles was 33-50% lower with the chest support stool. It is important to note that this was a small study and surface EMG has a number of limitations. However, it does support the idea that a chest support may reduce muscle fatigue in the spine.



      Unverified Reports: Unverified reports are reviews and case studies that we have found online. Whilst unverified commendations do not have the same scientific rigour and credibility as research, they can still offer some early insights into what equipment may be worth exploring in more depth.

      What conditions do the Orbital chairs help? 

      We have found that most commendations for the Orbital chairs come from people with back issues back or shoulder issues. Most of these people have significant problems and are either in severe pain or recovering from some sort of surgery.

      Specific conditions noted include:

      -Rotator cuff injuries 
      -Slipped discs 
      -Generalised neck and back pain

      How much has an Orbital dental chair helped? 

      Most people who have left feedback about the Orbital chairs have reported that it has had either a moderate or large effect on their life. Most people found that it significantly

      reduced pain and discomfort, and most reported that they could work for much longer periods without feeling fatigue.

      How difficult is it to use the Orbital chairs?

      Setting the seat height and using the height adjustment mechanism feels intuitive.

      Unsurprisingly, some people report a bit of a learning curve when it comes to mastering the dynamics of the arm supports, but it normally only takes 1-2 months to fully adjust to using these supports. We are noticing an increasing number of users opting for the saddle chair on the 5S because it helps them get an elevated position above the patient.

      Interestingly, there have been reports that it can take a little while to get used to the new position in an Orbital chair because it makes it harder to contort the spine into abnormal positions due to the chest support.

      What work/hobbies is the Orbital chair used for?

      To date, most people have used the Orbital chairs for dental and medical procedures. Because the chair supports sitting and upper limb work in a forward-leaning position, we are expecting other healthcare professionals and technicians, beauticians, tattoo artists, etc., to also benefit from the support. But we need more feedback to evaluate this.

      What is the difference between the main models? There are 4 main models of Orbital chairs. All the chairs have chest supports and can have upper-limb supports, but they have been built slightly differently to suit different professionals and budgets. The Orbital 5S is the cheapest chair. The key distinguishing feature here is the 5-star base which is the lightest base and best suited for dentists who need to move around a dental chair. The Orbital S and MS have a weighted base which makes the chair feel more grounded for surgery and microsurgery. The S and MS also have hands-free height adjustment that is operated by a foot pedal, allowing the user to maintain sterility. The Orbital Microsurgical (MS) is a larger version of the Orbital Surgical ideal for higher standing environments and microsurgery. Finally, the Orbital Modular chair was designed as a cheaper version of the Orbital S and MS chairs. The modular design allows you to adapt the features on your chair to suit your specific needs and budget.

      Who uses this type of chair? The most common users are dentists, followed by surgeons and microsurgeons.

      Do the arms move in 3 dimensions? Once in position, the arms move in 2 dimensions. One way of visualising this is to think about the movements you make when polishing the roof of a car.

      Does the seat tilt? Yes, the seats do tilt. Please note that the 5S has an active tilt whilst the other chairs have a tilt adjustment lever.

      What type of seat is there? Orbital gives you the option of a flat seat or a saddle seat. 70% of customers now opt for the saddle seat.

      How long is the warranty? 5 years.

      How long is delivery? The chairs are custom-made to order and can take 3-6 weeks to arrive.

      If you need help finding the right equipment please contact us

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