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Unloader One® OTS

Now the Unloader One OA knee brace is even simpler to fit and easier to wear!

A new design incorporates color-coded buckles , more intuitive strapping, and denser Sensil® lining for increased patient comfort. See what has been improved.

The flexible, perforated shells conform easily to individual anatomy, giving Unloader One OTS an excellent out-of-the-box fit. This brace combines a streamlined, flexible upright with Dual Dynamic Force Straps to generate more unloading leverage than any Unloader to date. Quick fit buckles and breathable liners help ensure better patient compliance.

New! Plus model for larger patients features a wider thigh strap, a gastroc strap and a sturdier frame and upright.

Indications for Use

  • Mild to severe unicompartmental osteoarthritis (OA)
  • Unicompartmental knee conditions requiring load reduction, such as Articular Cartilage Defect Repair, Meniscal Cartilage Repair, Avascular Necrosis, or Tibial Plateau Fracture.
  • Thigh circumferences of 13.5" (34.3cm) to 33" (83.8cm) and calf circumferences of 9.8" (25cm) to 24" (61.5cm)
  • All non contact activities

Live Again With a Proven Breakthrough in Knee Pain Treatment Options

Are you suffering from knee stiffness in the morning, knee pain that intensifies when you ascend or descend stairs, restricted range of motion, a crunching sensation in the knee, knee weakness, or knee swelling? These are all typical symptoms of osteoarthritis (OA), the most common form of arthritis.

If you think the Unloader One might be right for you

Please print out our Unloader One Information Sheet and bring it to your physician, or for additional information, call us toll free at 800-233-6263 ext. 1023877. Please note that Unloader One is available via prescription only

Perhaps you’ve chosen to endure all those grueling hours of joint pain. Or you’re treating your knee arthritis with oral medications, injections, or possibly the most extreme option - surgery.

These approaches certainly can help alleviate the suffering associated with knee osteoarthritis. However, as you may have discovered, each of these knee pain treatment options can have serious drawbacks. Fortunately, there’s a far more effective solution for knee OA.

Bill Bielmyer

"The One" - Bill Bielmyer's story

Can Össur’s Unloader One® knee brace change your life? For the 65-year old Chief Operating Officer of ComNet Communications the answer is a resounding “Yes.”

Read Bill's Story

The Unloader One OA Knee Brace is Clinically Proven to Reduce Joint Pain

The Unloader One is the safe and simple osteoarthritis knee brace for joint pain. Unlike many other knee pain treatment options, this innovative product has been CLINICALLY PROVEN to alleviate the full range of symptoms associated with osteoarthritis of the knee. Recent clinical research demonstrates that the Unloader One provides the following important benefits:

  • Decreased Knee Pain
  • Improved Knee Function
  • Reduced Usage of Pain Medication

Available in Plus Sizes

For a variety of reasons, many sufferers of OA knee pain are overweight. For these patients, containing excess soft tissue is essential if they are to be braced effectively and comfortably. That's why our new Unloader One Plus model is equipped with a wider thigh strap than the standard version, plus a gastroc strap that helps secure the brace in place.

Extra large support

Bigger legs require bigger support. So, for the new Unloader One Plus model, we included a sturdier upright with an Adjustable Dynamic Joint that provides clinicians with additional leverage for optimal pain management. Multiple, peer-reviewed clinical and biomechanical studies have proven the efficacy of this technology.

Animation: Osteoarthritis of the knee and knee braces

This presentation demonstrates the progression of knee arthritis and how the Unloader One relieves the discomfort of knee pain through our advanced ‘unloading’ process.

Carefree Comfort

The Unloader One® is the lightest and most comfortable of the Össur OA knee braces. Two diagonal Dynamic Force Straps increase the unloading potential of the brace and enable you to adjust the amount of pain relief needed. The Unloader One is easy to apply, easy to use and easy to wear. It easily fits under clothing so you can wear it discreetly.

Note new order numbers

Unloader One OTS Short - Medial
Part# Leg Compartment Size Measuring*
B-241519711 Right Medial X-Small 9.8 - 12.2"
B-241619711 Left Medial X-Small 9.8 - 12.2"
B-241519712 Right Medial Small 12.2 - 14"
B-241619712 Left Medial Small 12.2 - 14"
B-241519713 Right Medial Medium 14 - 16.75"
B-241619713 Left Medial Medium 14 - 16.75"
Circumference: 6" below mid-patella

Unloader One OTS Short - Lateral
Part# Leg Compartment Size Measuring*
B-241529711 Right Lateral X-Small 9.8 - 12.2"
B-241629711 Left Lateral X-Small 9.8 - 12.2"
B-241529712 Right Lateral Small 12.2 - 14"
B-241629712 Left Lateral Small 12.2 - 14"
B-241529713 Right Lateral Medium 14 - 16.75"
B-241629713 Left Lateral Medium 14 - 16.75"
Circumference: 6" below mid-patella

Unloader One OTS Standard - Medial
Part# Leg Compartment Size Measuring*
B-240519712 Right Medial Small 12.2 - 14"
B-240619712 Left Medial Small 12.2 - 14"
B-240519713 Right Medial Medium 14 - 16.75
B-240619713 Left Medial Medium 14 - 16.75
B-240519714 Right Medial Large 16.75 - 20"
B-240619714 Left Medial Large 16.75 - 20"
B-240519715 Right Medial XLarge 20 - 24"
B-240619715 Left Medial XLarge 20 - 24"
Circumference: 6" below mid-patella

Unloader One OTS Standard - Lateral
Part# Leg Compartment Size Measuring*
B-240529712 Right Lateral Small 12.2 - 14"
B-240629712 Left Lateral Small 12.2 - 14"
B-240529713 Right Lateral Medium 14 - 16.75
B-240629713 Left Lateral Medium 14 - 16.75
B-240529714 Right Lateral Large 16.75 - 20"
B-240629714 Left Lateral Large 16.75 - 20"
B-240529715 Right Lateral XLarge 20 - 24"
B-240629715 Left Lateral XLarge 20 - 24"
Circumference: 6" below mid-patella

Unloader One OTS Plus - Standard, Medial
Part# Leg Compartment Size Thigh circ.* Calf circ.*
B-245510004 Right Medial Large 21 - 25" 14 - 16.75"
B-245610004 Left Medial Large 21 - 25" 14 - 16.75"
B-245510005 Right Medial XLarge 25 - 29" 16.75 - 20"
B-245610005 Left Medial XLarge 25 - 29" 16.75 - 20"
  • Standard Length = 15.5"
  • Thigh Circumference: 6" above mid-patella
  • Calf Circumference: 6" below mid-patella

Unloader One OTS Plus - Standard, Lateral
Part# Leg Compartment Size Thigh circ.* Calf circ.*
B-245520004 Right Lateral Large 21 - 25" 14 - 16.75"
B-245620004 Left Lateral Large 21 - 25" 14 - 16.75"
B-245520005 Right Lateral XLarge 25 - 29" 16.75 - 20"
B-245620005 Left Lateral XLarge 25 - 29" 16.75 - 20"
  • Standard Length = 15.5"
  • Thigh Circumference: 6" above mid-patella
  • Calf Circumference: 6" below mid-patella

Unloader One OTS Plus - Long, Medial
Part# Leg Compartment Size Thigh circ.* Calf circ.*
B-244510004 Right Medial Large 21 - 25" 14 - 16.75"
B-244610004 Left Medial Large 21 - 25" 14 - 16.75"
B-244510005 Right Medial XLarge 25 - 29" 16.75 - 20"
B-244610005 Left Medial XLarge 25 - 29" 16.75 - 20"
  • Long Length = 16.5"
  • Thigh Circumference: 6" above mid-patella
  • Calf Circumference: 6" below mid-patella

Unloader One OTS Plus - Long, Lateral
Part# Leg Compartment Size Thigh circ.* Calf circ.*
B-244520004 Right Lateral Large 21 - 25" 14 - 16.75"
B-244620004 Left Lateral Large 21 - 25" 14 - 16.75"
B-244520005 Right Lateral XLarge 25 - 29" 16.75 - 20"
B-244620005 Left Lateral XLarge 25 - 29" 16.75 - 20"
  • Long Length = 16.5"
  • Thigh Circumference: 6" above mid-patella
  • Calf Circumference: 6" below mid-patella

Why the Unloader One Stands Above the Others

At the heart of the Unloader One is a highly sophisticated 3-Point Leverage System. This maximizes stability and support for knee osteoarthritis, providing an unparalleled level of comfort and range of motion.

The effectiveness of this system is further enhanced by two diagonal Dynamic Force Straps, which significantly increase the unloading potential of the knee brace. Adjusting these straps enables you to modify the amount of relief needed to alleviate joint pain.

Product Highlights

  • Dual Dynamic Force Straps increase unloading capabilities and prevent rotation of the brace on the leg 
  • Tool-free,  racheting Dynamic Force Control System enables self-dosing for easier pain management 
  • Quick Fit Buckles with leverage arms enable easy application and removal without the need for cumbersome strap adjustment 
  • Breathable liners featuring Össur Sensil® Silicone Technology on an Aerospacer base material eliminate migration
  • Flexible, low-profile, hinged upright contours to individual anatomy and allows use underneath clothing
  • Quick Connect Strapping for tool-free removal and replacement
  • Lightweight frame is perforated for flexibility and ventilation

Ossur AcademyÖssur Academy now offers the Unloader One Competency Program. The program is an online training intended to enhance the successful clinical outcomes for the practitioner. This program offers key information and direction on the proper technique in measurement for and fitting of the Unloader One osteoarthritis knee orthosis.

Get more information on the Unloader One Competency Program and other online education resources made available by Össur Academy

Tralli, t3 (by EOV)

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