Gloved fingers holding The Summit™ Patella Plate

Solving the Problem at its Peak

Treating patella fractures through targeted soft-tissue control

Current Challenges Treating Patella Fractures Using Traditional Surgical Methods

700,000 +
global patella fractures annually
Line illustration of a leg with the kneecap highlighted
700,000 %
require reoperation
Line illustration of a knee undergoing surgical repair

up to:

80 %
of patients experience anterior knee pain
80 %
show deficit in strength
80 %
saw reduction in endurance

It’s Time for a New Standard of Care for Patella Fracture Repair

Patella fractures are often avulsion injuries where the tendons pull the bone apart. Traditional fixation methods focus on the bone but often overlook the abnormal forces of the extensor mechanism that caused the strain and injury. If left unmanaged, implant hardware can move and patients may need additional surgery.

The Summit™ Patella Plating System takes a different approach by treating the bone and soft tissue as one connected problem. With built‑in suture pathways and controlled Zip‑Knot tensioning, the Summit™ System helps off‑load those pulling forces and creates a more stable, predictable foundation for healing.

How It Works

Anatomical model of a patella showing a transverse fracture line before repair
STEP 1

Create Fascia Pocket & Reduce the Fracture

Create a dorsal vertical 12–15 cm mid‑line incision
  • This should go down through the quadriceps tendon, patella and patellar ligament
  • Identify the superficial fascia and elevate it off the quadriceps tendon
  • Evacuate the fracture hematoma from the knee joint and irrigate the joint thoroughly
  • Lift the dorsal soft tissue off the patella from the midline toward the medial and lateral retinaculum
The Summit™ Patella Plate seated on the patella with a drill sleeve positioned over a screw hole
STEP 2

Seat and Secure the Plate

With the fracture reduced and stable:
  • Seat the plate using the provided olive wires
  • Drill through the variable-angle or nominal drill sleeve using the 1.8mm calibrated drill bit
  • Affix the variable-angle locking screws (15° angulation within a 30° cone)
Side view of the plated patella with suture passed through the quadriceps tendon
STEP 3

Place the Superior Quad Tendon Suture

Establish proximal soft tissue control with a single pass construct, and then:
  • Flex the knee 30°
  • Pass the superior suture through the quad tendon as close as possible to the superior pole, leaving a rabbit ear on the zip‑knot side
  • Locate the built‑in loop, cut the suture between loop and needle and slide the loop over the cleat
  • Use the rabbit ear to pull slack through the suture tunnel toward the zip‑knot side
Suture tail pulled superiorly away from the plate to tension the Zip-Knot
STEP 4

Tension the Superior Zip Knot

Apply controlled tension without overtightening.
  • Unlock the zip knot by pulling the suture tail superiorly, away from the plate’s midline
  • Tension at a 45° angle until slack is removed and the quad tendon begins to move toward the superior pole
  • Cut the suture, leaving a 1cm tail
Krackow sutures woven down each side of the patellar tendon toward the tibial tuberosity
STEP 5

Perform the Inferior Krackow Sutures

Create balanced distal soft-tissue control through the patellar tendon.
  • Perform a Krackow suture through the patellar tendon toward the tibial tuberosity, one on each side
  • Remove needles, tie the suture and pull excess slack toward the plate
Completed construct with both inferior sutures tensioned through the plate
STEP 6

Tension the Inferior Zip Knots

Finalize distal tensioning to neutralize inferior deforming forces.
  • Unlock each zip knot by pulling the suture tail away from the midline
  • Tension until the patellar tendon begins to move toward the inferior pole, no need to overtighten
  • The system is designed to off-load the deforming forces leaving the patella free to heal

Benefits of Endeavor's Technology

Thinnest Plate on the Market

Measuring only 1.25mm* thick, the Endeavor Summit™ Patella Plating System is the thinnest on the market.

*Thickness measured at the center of the standard plate.
Close up of The Summit™ Patella Plate laid inside the kit packaging

Single-use Sterile Kitting

Every Summit™ System kit arrives fully sterile and complete, ensuring surgeons have the exact implant, sutures and instrumentation required for consistent, reproducible outcomes.
sealed single-use sterile Summit™ System kit containing the plate, screws, sutures and instruments

Integrated Sutures for Soft-Tissue Management

Unlike plates that rely solely on hardware, the Summit™ System incorporates built in suture tunnels that let surgeons manage both the quad and patellar tendons directly through the implant, creating a unified bone and soft tissue construct.
The Summit™ Patella Plate with three pre-attached sutures

Zip-Knot Technology

Endeavor’s proprietary Zip Knot™ mechanism provides predictable, incremental tensioning without overtightening, a major improvement over traditional metal tension bands and freehand suture combinations.
Close-up of the Zip-Knot mechanism on a plated patella, side view

Trusted by Surgeons and Institutions Nationwide

Dr. Hrayr Basmajian headshot

“Endeavor allows reproducibility and predictability. I'm able to tension the patella the same way every time, balancing the tissues and getting all that force off of the little pieces so they can heal where they need to heal without being pulled apart by the tendons and muscles.”

Dr. Hrayr Basmajian
Orthopaedic Surgeon
Premier Orthopaedic & Trauma Specialists
Dr. Stephen Quinnan headshot

"There are many surgical cases where the amount of bone involved isn't optimal to hold a plate alone, so you need the support of the soft tissues. Endeavor is an optimal solution for many of those circumstances."

 

Dr. Stephen Quinnan
Orthopaedic Trauma & Limb Reconstruction Surgeon
Paley Orthopedic & Spine Institute
Dr. Matthew Gardner Headshot

“With the SummitTM system, I routinely bend the knee to 90 degrees with a stable construct and no gapping. Seeing that in the OR changed how I treat patients immediately post-operatively. I'm ready to let patients start their passive range of motion earlier with the SummitTM plating system than anything else."

Dr. Matthew Gardner
Orthopaedic Trauma Surgeon
Springfield Memorial Hospital
Dr. Brent Norris headshot

“Endeavor’s system offloads all the forces acting on these small little fragments you might not be able to capture in surgery. It's ideal to keep those fragments close by and let them try to heal without having to actually put a screw in each one.”

Dr. Brent Norris
Orthopaedic Surgeon
Orthopaedic Trauma Services of Oklahoma

News & Resources

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Clinical Advantages Video

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Surgical Technique Video

Surgical Technique Guide

Surgical Technique Guide

Interested in Endeavor's Patented Technology?

Contact us to see how you can benefit from Endeavor’s approach to soft-tissue management.
Gloved fingers holding The Summit™ Patella Plate