Cleared Traditional

K251771 - Cambridge Partial Knee

K251771 is an FDA 510(k) clearance for Cambridge Partial Knee, manufactured by Signature Orthopaedics Pty, Ltd.. The device is a Class 2 Orthopedic device with product code HSX cleared through the Traditional 510(k) pathway after a 189-day FDA review.

K251771 · Signature Orthopaedics Pty, Ltd. · Orthopedic device
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Dec 2025
Decision
189d
Days
Class 2
Risk

K251771 is an FDA 510(k) clearance for the Cambridge Partial Knee. Classified as Prosthesis, Knee, Femorotibial, Non-constrained, Cemented, Metal/polymer (product code HSX), Class II - Special Controls.

Submitted by Signature Orthopaedics Pty, Ltd. (Lane Cove West, AU). The FDA issued a Cleared decision on December 16, 2025 after a review of 189 days - an extended review cycle.

This device falls under the Orthopedic FDA review panel, regulated under 21 CFR 888.3520 - the FDA orthopedic device regulatory framework. The Traditional 510(k) pathway establishes clearance through substantial equivalence to a legally marketed predicate device, without requiring clinical trial data.

Device pattern: Standard predicate-based submission. Standard predicate reliance. This clearance follows a standard predicate-based equivalence path within the Orthopedic review framework, consistent with the majority of Class II 510(k) submissions.

View all Signature Orthopaedics Pty, Ltd. devices

FDA 510(k) Submission Details - K251771

510(k) Number K251771 FDA.gov
FDA Decision Cleared Substantially Equivalent - Traditional 510(k) (SESE)
Date Received June 10, 2025
Decision Date December 16, 2025
Days to Decision 189 days
Submission Type Traditional
Review Panel Orthopedic (OR)
Summary Summary PDF
Third-party Review No - reviewed directly by FDA
Combination Product No
PCCP Authorized No
Regulatory Context
Review time vs. panel average
67d slower than avg
Panel avg: 122d · This submission: 189d
Pathway characteristics
Predicate-based equivalence. No clinical trials required.

HSX Device Classification - Class 2, Special Controls

Product Code HSX Prosthesis, Knee, Femorotibial, Non-constrained, Cemented, Metal/polymer
Device Class Class 2 - Special Controls
CFR Regulation 21 CFR 888.3520
What this classification means

Class II devices require demonstration of substantial equivalence to a legally marketed predicate device. This pathway does not require clinical trials - it relies on engineering equivalence and performance data. Most Orthopedic devices follow this clearance model.

Regulatory Peers - HSX Prosthesis, Knee, Femorotibial, Non-constrained, Cemented, Metal/polymer

All 109
Devices cleared under the same product code (HSX) and FDA review panel - the closest regulatory comparables to K251771.
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