Choose joint preservation.
The Accu-Joint® Implant System is a revolutionary, FDA-approved treatment for MTP joint disorders that enables restoration of MTP joint function and motion.
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“Simply said, the Accu-Joint® Implant restores anatomical function. It allows natural joint motion by design and does not preclude the option of future treatments if required. I am excited to offer the Accu-Joint® Implant to my patients and select joint preservation over joint fusion.”
— Dr. Glenn C. Vitale, DPM, FACFAS
Don’t replace, resurface!
The Accu-Joint® Implant is a simple, elegant system that resurfaces the MTP joint instead of resecting the hard bone, strengthening the implant and restoring function and motion.
2-Stage MTP Joint Reamer
Our unique 2-stage reamers remove worn cartilage, smooth bone spurs, and create a 1 mm recess to countersink the implant into the hard subchondral bone end in one single process. This results in complete resurfacing of the bone ends, preserving bone anatomy thereby creating an exact radius match of bone to implant for precise seating.
At the same time, second-stage blades produce 360-degree clearance around the implant edge, enabling articulation from cortex to cortex. This allows the newly resurfaced joint to articulate in a smooth manner across the entire articular surface.
- Outer-articular radius cheilectomy of the articular surface to the outer cortex.
- Intra-articular radius cheilectomy for precise bone radius and implant countersinking.
The Accu-Joint® Implant is designed to replace original cartilaginous anatomy. This is accomplished by preserving the subchondral bone end, thus providing a true articular surface replacement, and the solid rigid internal fixation needed for support, function and longevity. By preserving its existence, it will continue to support the implanted articular surface. The implant is sized to be 10-15% smaller than the diameter of the bone end, which ensures that the bone, not the implant, bears the full weight of the body. The preservation of the joint’s anatomical structures creates the strength and stability necessary for foot function.
- Non-cannulated, solid stem, cancellous threads help to prevent entry of infection into the medullary canal, and provide superior strength to the implant.
- The implant is rigidly fixated into subchondral bone, is 10 degrees wider than the stem, thus transferring the dynamic and static stresses off of the medullary stem, and into the hard subchondral bone.
- Grooves and scalloped edges under the head of the implant allow bone ongrowth, reducing implant rotation or loosening, thus preventing anti-rotation.
- Implant diameter is 10-15% less than the diameter of the bone which prevents weight bearing on the implant and transfers the load to the preserved hard bone.
Accu-Joint® Implant System Instruments
Cannulated Drill Bit
The Accu-Joint® Implant difference
Unlike fusions, the Accu-Joint® Implant enables patients to regain mobility and joint functionality.
No resection of the bone end
Our patented 2-stage reamer resurfaces the bone end without the need for resection.
Non-weight bearing design
Body weight is transferred to the preserved bone, rather than the implant.
Fast, active recovery
The Accu-Joint® Implant is weight-bearing from day 1 and patients are back on their feet in days, not weeks.
The Accu-Joint® Implant is approved for the treatment of arthritic conditions of the greater and lesser MPJ’s.
How it works
Obtain full exposure by performing an extra articular cheilectomy using a bone saw, rongeur, and rasp where indicated. In all cases it is essential that a McGlamry elevator is used to free the sesamoids.
Use the opposing side trial to size 10% to 15% smaller than the outer cortical diameter of the bone surface.
Center and align the trial to the bone articular surface. The trial for the Accu-Joint® Hemi Implant should be positioned perpendicular to the articular set angle.
Drive the k-wire axial, leaving 30 – 40mm (1.2 – 1.6 inches) exposed. Position for the articular set angle should be confirmed with imaging.
Use the cannulated joint two-stage reamer gently and lightly with high-speed revolution for removal of worn cartilage and to create outer articulation and any indicated decompression of no more than three to four millimeters. The subchondral bone remains preserved for the four-point rigid fixation of the Accu-Joint® Implant .
Drill the pilot hole until the top of the counterbore is flush with the surface of the bone.
Use the trial to ensure complete 360 degree seating, range of motion, and alignment of the Accu-Joint® Hemi Implant. Any remaining extra articular osteophytes are removed to ensure smooth range of motion. The tap can be used based on bone hardness, at the surgeons discretion.
Remove the K-wire and thread the Accu-Joint® Hemi Implant into the pilot hole using the T-6 driver. Use two finger tightness to secure the implant. (cleared for use with bone cement).
Simulate weight-bearing and assess range of motion.
Who is the Accu-Joint® Implant for?
The Accu-Joint® Hemi Implant should be used to treat patients with degenerative and post-traumatic arthritis of the MTP joint who have hallux limitus or hallux rigidus, or any arthritic conditions having unstable or painful MTP joints. The Implant is intended to be used with bone cement.*
*At the surgeon’s discretion/decision
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This material is intended for health care professionals. Distribution to any other recipient is prohibited. For product information, including indications, contraindications,warnings, precautions, potential adverse effects, and patient counseling information, see the package insert and www.accufixsurgical.com. The Accu-Joint® hemi implant, a hemi-arthroplasty metatarsal head or phalangeal base implant for the metatarsophalangeal (MTP) joint, is indicated for use in the treatment of patients with degenerative and post-traumatic arthritis in the MTP joint in the presence of good bone stock, along with the following clinical conditions: Hallux Limitus, Hallux Valgus, Hallux Rigidus, and an unstable or painful MTP joint. The Accu-Joint® hemi implant is intended to be used with bone cement. The metatarsal head and phalangeal base may not be used together at the same joint. Potential risks include, but are not limited to, risks of the procedure, including the risk of implant breakage, failure or loosening, bone fracture, allergic reaction to implant materials or infection, any of which can require additional surgery. For complete prescribing information, see the package insert and www.accufixsurgical.com.