Written and maintained by CASRAI Editorial Board
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This page describes products and general use; it is not medical advice.
A counterforce brace is a strap or band worn around the forearm just below the elbow, used by people with tennis elbow (lateral epicondylitis). The American Academy of Orthopaedic Surgeons (AAOS) says a brace centered over the back of the forearm may help relieve symptoms by resting the muscles and tendons. This page covers what the product is, the types you will see listed, what a small randomized trial of counterforce bracing found, and how limb braces are regulated in the United States.
Who uses it: people managing lateral epicondylitis under the direction of a clinician, and the clinic staff, therapists and buyers who stock braces for them.
What a counterforce brace is
A counterforce brace is an elbow brace worn on the forearm rather than across the joint. AAOS OrthoInfo shows one in its tennis elbow guide, captioned “Counterforce brace,” and describes bracing as one way to help relieve tennis elbow symptoms. Retail and clinic listings often call the same product a counterforce strap, tennis elbow strap or tennis elbow band.
The purpose in one line: to rest the muscles and tendons of the forearm during use (AAOS OrthoInfo).
How it is meant to work
The AAOS statement above is the sourced part: the brace rests the muscles and tendons. The more detailed mechanism is a proposed explanation, not an established fact. A physical therapist writing on the topic describes it as the strap spreading the pull of the forearm extensor muscles so less tension reaches the tendon attachment at the outside of the elbow (Mike Reinold, mikereinold.com). Treat this as a theory; the research summarized below tested whether the product helps, not the mechanism.
Types and variants
| Type | Typical description | Key difference | Source |
|---|---|---|---|
| Counterforce brace or strap | Band worn around the forearm, centered over the back of the forearm | Targets the forearm below the elbow rather than the whole joint | AAOS OrthoInfo, Tennis Elbow |
| Compression sleeve | Sleeve over the elbow and forearm | Gives general compression, not targeted pressure | Sydney Physio Clinic, tennis elbow brace guide |
| Strap with gel or air pad | Counterforce strap with a built-in pad | Adds a pad to the strap design | Sydney Physio Clinic, tennis elbow brace guide |
The first row is described by the orthopaedic society; the other two rows come from a physiotherapy clinic’s product description, which is an opinion-level source rather than a standard.
What the research shows
The most direct evidence is a randomized, double-blinded, placebo-controlled trial: Kroslak M, Pirapakaran K, Murrell GAC, “Counterforce bracing of lateral epicondylitis,” Journal of Shoulder and Elbow Surgery 2019;28(2):288-295 (PMID 30658774).
- Who: people with acute tennis elbow, 17 in the counterforce brace group and 14 in a placebo brace group, followed from 2 weeks up to a mean of 3 years.
- What improved: both braces improved pain, function and grip strength.
- What differed: the significant differences between the groups were in pain at rest (at 2, 6 and 12 weeks) and in overall elbow function at 26 weeks.
- Authors’ conclusion: the brace provides a significant reduction in the frequency and severity of pain in the short term.
Two cautions apply. The trial is small (31 people), and the placebo brace group also improved on most measures, so the between-group differences were limited to the outcomes listed above. A single small trial is not a basis for claims that a brace cures tennis elbow, and none are made here.
Regulatory status in the United States
Retail listings rarely say how a brace is regulated. Under 21 CFR 890.3475 (eCFR), FDA identifies a limb orthosis (brace) as a device intended for medical purposes that is worn on the upper or lower extremities. These devices are Class I (general controls), exempt from premarket notification subject to the limits in 21 CFR 890.9, and exempt from quality system requirements except records and complaint files (21 CFR 820.35). The regulation does not name counterforce braces specifically, so the careful reading is that limb orthoses as a group are Class I. For background on device regulation, see What Is a Medical Device? and Medical Device Amendments of 1976.
Safe use and handling basics
AAOS describes bracing as one way to help relieve tennis elbow symptoms by resting the muscles and tendons. Follow the manufacturer’s instructions for use for fit, wear and care of the specific product, and ask a clinician about any pain, numbness or swelling. Sizing, wear time and tightness are set by each manufacturer, so no numbers are given here.
Common mistakes
- Treating a brace as a cure. The sourced statements say it may help relieve symptoms and, in one small trial, reduced short-term pain.
- Assuming a placebo-free result. In the trial, the placebo brace group improved too.
- Mixing up product types. A general compression sleeve is described as non-targeted, unlike a strap.
- Assuming a regulatory claim. Class I status means general controls apply; it is not a statement about how well a given product works.
Frequently asked questions
What is a counterforce brace?
A band or strap worn on the forearm for tennis elbow. AAOS says a brace centered over the back of the forearm may help relieve symptoms by resting the muscles and tendons.
Does a counterforce brace work?
In a small randomized trial (31 people), the brace reduced short-term pain more than a placebo brace in some measures, but both groups improved. See the research section above.
Is a counterforce brace an FDA-regulated device?
Limb orthoses (braces) are Class I devices under 21 CFR 890.3475, exempt from premarket notification subject to 21 CFR 890.9.
Where do braces fit in a clinic’s supplies?
See the sports medicine clinic supply checklist, the physical therapy clinic supply checklist, and the guides to splints and canes, crutches and ankle braces.
Sources
- AAOS OrthoInfo, Tennis Elbow (Lateral Epicondylitis), https://www.orthoinfo.org/en/diseases–conditions/tennis-elbow-lateral-epicondylitis/ (checked 2026-10-30).
- 21 CFR 890.3475, Limb orthosis, https://www.ecfr.gov/current/title-21/chapter-I/subchapter-H/part-890/subpart-D/section-890.3475 (checked 2026-10-30).
- Kroslak M, Pirapakaran K, Murrell GAC. J Shoulder Elbow Surg 2019;28(2):288-295, https://pubmed.ncbi.nlm.nih.gov/30658774/ (checked 2026-10-30).
- Mike Reinold, “Are tennis elbow straps effective?”, https://mikereinold.com/are-tennis-elbow-straps-effective/ (checked 2026-10-30; secondary).
- Sydney Physio Clinic, “Using a tennis elbow brace”, https://www.sydneyphysioclinic.com.au/treatment-modalities/using-a-tennis-elbow-brace-what-you-need-to-know/ (checked 2026-10-30; secondary).
