Knee Orthosis
Also written as: KO — Knee Orthosis
An external device applied to the knee joint to provide support, correct alignment, or restrict motion.
Full Definition
A knee orthosis (KO) is a brace or splint fitted externally around the knee to offload compartmental forces, stabilise ligamentous laxity, manage post-surgical recovery, or address hyperextension. It may be prefabricated or custom-fabricated and is distinguished from a KAFO in that it spans only the knee, not the ankle or foot. In editorial use, 'knee orthosis' is the preferred clinical term over 'knee brace,' which is considered informal. HCPCS coding for KOs falls under the L1800–L2999 range. Correct capitalisation follows the pattern: abbreviation KO in caps, full term in lowercase.
Usage
Usage note: Use 'knee orthosis' in clinical and reimbursement documents; reserve 'knee brace' only for patient-facing lay copy. Do not conflate with 'knee immobiliser,' which implies full restriction.
In Context
- "The claim was denied because the knee orthosis had been coded under the wrong L-code series." — Insurance pre-authorisation letter
- "A functional knee orthosis was prescribed to limit tibial rotation during ambulation." — Clinical referral report