Caeruleum Biotechnologies
A LunaFlex implant on a stainless steel instrument tray in a laboratory.

The LunaFlex Meniscal Replacement System

A total replacement for the medial or lateral meniscus.

Fiber-reinforced, patient-matched, and built to stay in the joint.

The gap

The meniscus-deficient knee

LunaFlex is being developed for the meniscus-deficient knee – patients whose meniscal tissue cannot be repaired or has already been removed, and whose remaining options are resection, allograft transplant, or waiting for a knee replacement.

That leaves a large group of people with a joint that still works but is no longer protected, and a treatment ladder whose next rung is arthroplasty. LunaFlex is designed to sit between those two points.

Three cross-sections of a knee joint side by side, showing progression from left to right: a joint with intact cartilage and a torn meniscus, then cartilage lesions and further meniscal damage, then advanced osteoarthritis with worn cartilage, lost joint space and bone spurs.
Progressive joint degeneration following meniscal loss Illustration

The platform

Three integrated components.One device platform.

LunaFIT Meniscal Body

A fiber-reinforced, load-bearing composite engineered to reproduce native meniscal mechanics across compression, rotation, and shear.

LunaLOCK Fixation System

A central tibial bridge, circumferential reinforcement, and peripheral sutures engineered to provide hoop strength and implant stability.

LunaMATCH Software

Pre-operative planning software intended to translate patient imaging into an anatomically sized and positioned implant configuration.

Plan-view illustration of the LunaFlex Meniscus with four numbered markers identifying the composite body, suture threads, circumferential reinforcement and fixation bridge.
  • 1LunaFIT Meniscal Body
    Fiber-reinforced laminate, patient-matched size & geometry
  • 2Suture Threads
    Peripheral fixation into the surrounding joint capsule
  • 3Fiber Reinforcement
    Increases implant hoop strength & wear/tear durability
  • 4LunaLOCK Fixation Bridge
    Central fixation point joining the implant to the tibia

Design concept

How LunaFlex is intended to work

  1. Reinforcement through the whole structure

    Fiber reinforcement runs in multiple directions, supporting predictable behavior as the knee loads from different angles.

  2. Load spread across the joint, not concentrated

    The geometry distributes force across the tibial plateau while retaining shape through combined compression and rotation.

  3. Fixed centrally and at the outer rim

    Central tibial fixation resists migration, while peripheral sutures connect to the joint capsule so the implant can move with the knee.

  4. Matched to the individual patient

    Patient-matched geometry is derived from pre-operative imaging instead of a fixed size set, supporting planned fit before surgery.

Close view of the LunaFlex fixation bridge, a metal plate with a porous surface structure, joined to the translucent composite body of the implant.
Fixation detail Design render
Side profile of the LunaFlex implant, showing the wedge cross-section of the composite body and the suture strands running through it.
Profile Design render

Design intent, not performance data. LunaFlex has not been evaluated by the FDA and no clinical claims are made or implied.