Our technology
Engineered around one principle: let the skeleton carry the load.
The OPL system is the world’s most widely used bone-anchored prosthetic implant. A complete platform of implants, adapters, connectors, instruments, and custom solutions — all manufactured under ISO 13485 in Sydney, Australia.
Principle
A socket competes with the body. Osseointegration works with it.
The OPL stem is press-fit directly into the residual bone. Its surface is plasma-sprayed with pure titanium — the same biocompatible technology that has enabled load-bearing bone integration in joint arthroplasty for over thirty years.
A dual-cone adapter passes through the stoma and connects to any standard prosthetic limb in under ten seconds. Its polished Titanium Niobium Nitride surface reduces soft-tissue friction and offers antibacterial protection where the implant crosses the skin.
Every implant is traceable. Every production run is audited under ISO 13485 and MDSAP.
The system
Three components. One load path.
Titanium stem.
Plasma-sprayed.
Press-fit.
Implanted directly into the residual bone. The macroporous plasma-sprayed surface enables bony ingrowth within weeks — the same proven technology used in joint arthroplasty for over thirty years.
Polished.
TiNbN-coated.
Antibacterial.
Passes through the stoma. Locked in place by an internal screw; the TiNbN coating provides antibacterial properties at the skin-metal interface; polished geometry minimises hypergranulation.
Torque-controlled.
Sub-10s donning.
Serviceable.
Connects to any standard prosthetic limb in under ten seconds. Torque-limited safety release. Routine six-month servicing, two-year replacement interval, standard pyramid interface.
Implant range
159 sizes across transfemoral, transtibial, and transhumeral indications.
The OPL endo-module is offered in a continuous range of diameters and lengths to match patient anatomy across primary and revision cases. Each implant is press-fit, plasma-sprayed with pure titanium for bony ingrowth, and traceable from raw bar stock to sterile packaging.
Transfemoral
Femoral endo-module
The flagship configuration. Full diameter and length matrix for primary and revision femoral cases.
Transtibial
Tibial endo-module
Geometry refined for the tibial canal. Same plasma-sprayed surface, same load-transfer principle, indication-specific sizing.
Transhumeral
Humeral endo-module
Upper-limb configuration for transhumeral amputees. Restores direct skeletal load transfer for prosthetic use.
Dual cone adapters
The skin-metal interface, engineered.
The dual cone adapter is the OPL component that crosses the stoma. Its polished Titanium Niobium Nitride (TiNbN) coating reduces friction and provides antibacterial properties at the soft-tissue interface; the geometry is shaped to minimise hypergranulation and simplify long-term stoma care. Locked into the endo-module by an internal screw.
Coating
TiNbN surface
Polished Titanium Niobium Nitride with antibacterial properties at the skin interface.
Geometry
Stoma-shaped
Polished dual-cone profile minimises hypergranulation and simplifies long-term stoma care.
Fixation
Internal screw
Locked into the endo-module by an internal screw with torque-controlled assembly.
Coatings & surface technology
Two coatings. Two purposes. One continuous load path.
Endo-module
Plasma-sprayed pure titanium
A macroporous surface that enables bony ingrowth within weeks. The same proven coating used in load-bearing joint arthroplasty for over thirty years.
Dual cone adapter
Titanium Niobium Nitride (TiNbN)
Polished, low-friction, antibacterial. Engineered for the skin-metal interface where the implant crosses the stoma.
Connector systems
Three external connector systems — one prosthetic interface.
OPL is compatible with three external connector systems, each engineered around torque-controlled donning, sub-ten-second engagement, and a standard pyramid interface. Prosthetists keep the same componentry library; the patient gets a system tuned to their activity profile.
Connector · 01
Standard connector
The reference external connector for primary cases. Torque-limited safety release, sub-ten-second donning, two-year service interval.
Connector · 02
High-load connector
For active patients and higher-load prosthetic configurations. Same standard pyramid interface; reinforced internal load path.
Connector · 03
Upper-limb connector
Configuration for transhumeral cases. Compatible with standard upper-limb prosthetic componentry.
Connector specifications, torque values, and compatibility matrices are documented in the OPL component reference catalogue. Available to certified prosthetists on request.
Instrument sets
Surgical instrumentation, designed around the OPL technique.
OPL surgical instrument sets are matched to the implant range and the single-stage protocol — reamers, broaches, trial implants, insertion handles, and torque control. Every set is supplied to certified centres with a documented tray layout, sterilisation parameters, and replacement schedule.
Set · Femoral
Transfemoral instrument set
Reamers, broaches, trials, and insertion instruments matched to the femoral endo-module range.
Set · Tibial
Transtibial instrument set
Geometry and sizing matched to the tibial endo-module range and the single-stage protocol.
Set · Humeral
Transhumeral instrument set
Upper-limb instrumentation for transhumeral cases.
Tool kits
Prosthetist tool kits — for ongoing care, not just the OR.
Beyond the surgical instrument sets, OPL is supported by tool kits for the prosthetist and the certified service technician: torque drivers calibrated to connector specifications, alignment tools, and the consumables required for routine six-month servicing.
Custom solutions
When the standard range doesn’t fit, we engineer one that does.
Some patients fall outside the standard implant range — due to anatomy, prior surgery, oncology resection, or paediatric considerations. For these cases OI offers patient-specific implants, designed in collaboration with the surgical team and manufactured under the same quality system as our standard range.
Custom solutions are released through a controlled design and review pathway, with full traceability and regulatory documentation appropriate to the jurisdiction.
For prosthetists
Carry the system your patients are already asking about.
Sub-ten-second donning. Torque-controlled safety release on every connection. Standard pyramid interface — compatible with every prosthetic foot, knee, and componentry set you already specify.
Routine servicing at six-month intervals. Two-year external-component service life with full traceability through the OI quality system. IFUs, surgical technique guides, and component catalogues are available to certified clinics.
For surgeons
When limb salvage has run out of answers, osseointegration gives you another one.
For patients who have lost a limb — or will lose one — and for whom a socket will never deliver a functional outcome, osseointegration returns direct skeletal load transfer. Walking, standing, climbing, sitting — restored in a way that begins to feel like the body’s own work again.
OPL is indicated for transfemoral, transtibial, and transhumeral amputees, with primary and revision surgical techniques. Our teams have trained surgeons across four continents; our clinical partners routinely publish long-term outcomes in peer-reviewed journals.
Published evidence
290+ peer-reviewed studies. And counting.
Osseointegration is not an experimental technology. It is one of the most rigorously studied advances in prosthetic reconstruction of the last three decades — across safety, function, quality of life, gait analysis, and long-term outcomes.