PS Knee Prosthesis Instrument Set-I

PS Knee Prosthesis Instrument Set-I Overview

PS Knee Prosthesis Instrument Set-I Features and Benefits

·Comprehensive PS Notch Cutting System

Includes a dedicated guide and cutter specifically designed to remove the intercondylar bone (notch resection), creating the necessary housing for the intercondylar box of the PS femoral condyle.

·High-Precision Alignment Guides

Utilizes advanced intramedullary and extramedullary rods to accurately establish the mechanical axis, ensuring that bone cuts result in a neutral leg alignment and balanced ligament tension.

·Adjustable Femoral Sizing Calipers

Features intuitive sizing tools to precisely measure the anterior-posterior dimension of the femur, enabling the surgeon to select the optimal femoral component size to avoid joint overstuffing or ligament laxity.

·Durable, Modular Resection Blocks

All cutting blocks are fabricated from high-grade Stainless Steel (316L), designed with narrow cutting slots to maximize saw blade guidance and ensure the bone surfaces are planar and smooth.

PS Knee Prosthesis Instrument Set-I Indications

·Femoral and Tibial Preparation for PS TKA

Primary indication is for the sequential reaming and resection of the distal femur and proximal tibia to create the precise bone geometry required for Posterior Stabilized (PS) knee implants.

·Femoral Intercondylar Box Resection

Used to accurately guide the removal of the intercondylar bone notch, a necessary step for housing the stabilizing box of the PS femoral component.

·Joint Alignment and Balance Verification

Provides intramedullary and extramedullary referencing tools to ensure the knee joint is reconstructed with the correct anatomical and mechanical alignment, promoting post-operative stability and function.

PS Knee Prosthesis Instrument Set-I Specifications

Actual Pictures of PS Knee Prosthesis Instrument Set-I

PS Knee Prosthesis Instrument Set-I Insights

What is PS Knee Prosthesis Instrument Set-I?

The PS Knee Prosthesis Instrument Set-I is the foundational set of surgical jigs and guides used to reconstruct the knee in a PS (Posterior Stabilized) Total Knee Replacement. It provides the navigation and cutting control necessary to remove arthritic bone and create the complex slots required for the PS cam-and-post mechanical stabilization system.

Applications of PS Knee Prosthesis Instrument Set-I

This instrument set is applied during Total Knee Arthroplasty (TKA) cases where the Posterior Cruciate Ligament (PCL) is sacrificed. The instruments are used to connect external landmarks to the internal bone cuts, ensuring the knee prosthesis is seated in a way that restores the patient's walking ability and range of motion.

Advantages of PS Knee Prosthesis Instrument Set-I

The core advantage is the accuracy of the intercondylar box cut. Because the PS mechanism relies on a precise interface between the femoral cam and tibial post, the bone resection must be perfect. This set ensures that the housing cut is centered and appropriately sized to prevent mechanical impingement, which is common with lower-quality instrumentation.

Biomechanics of PS Knee Prosthesis Instrument Set-I

Biomechanically, these tools facilitate the restoration of the joint line and correct rollback mechanics. The alignment rods ensure the cut is 90 degrees to the mechanical axis, preventing the knee from being crooked (varus/valgus). By establishing a reliable posterior slope, the instruments maximize the leverage of the quadriceps muscle post-surgery.

Surgical Technique of PS Knee Prosthesis Instrument Set-I

Surgeons first establish the tibial and femoral axes using intramedullary rods. Resection blocks are pinned to the bone, and cuts are made through the slots. Finally, a specific PS Notch Guide is applied to the distal femur, and the intercondylar bone is removed. Trial components are then used to check stability before permanent implantation.

Postoperative Care of PS Knee Prosthesis Instrument Set-I

By ensuring planar bone surfaces and stable ligamentous balance, this instrument set provides the necessary foundation for immediate, full weight-bearing. Post-operative recovery is accelerated because the implants are accurately seated, reducing the risk of complications like patellar maltracking or joint instability during physical therapy.

Conclusion

The PS Knee Prosthesis Instrument Set-I is a vital surgical navigator for joint replacement. Its precision-engineered components allow surgeons to safely and reliably execute the complex bone resections necessary for PS TKA, providing patients with a functional, stable, and long-lasting knee reconstruction.

FAQs of PS Knee Prosthesis Instrument Set-I

Can this set be used for Cruciate Retaining (CR) implants?

No. While standard resections may be similar, this set contains specific box-cutting guides essential for PS implants. CR procedures do not require the intercondylar notch resection and would require a different instrument set.

What is the benefit of intramedullary vs extramedullary alignment rods?

Intramedullary referencing (inside the bone canal) is typically used for the femur for high reliability. Extramedullary referencing (outside the bone, referencing the ankle) is common for the tibia, offering ease of use and reduced surgical invasiveness.

Is this set compatible with robotic-assisted surgery?

This is a conventional manual instrument set. While it can be used alongside computerized navigation, robotic systems typically utilize their own specialized optical trackers and different cutting blocks.

How many sterilization cycles can these instruments withstand?

Crafted from Surgical Stainless Steel, these instruments are designed for hundreds of autoclaving cycles, provided they are cleaned and lubricated according to the manufacturer’s instructions between uses.

What happens if the notch cut is not accurate?

If the box resection is inaccurate, the PS femoral component may be malpositioned, leading to cam-post impingement, excessive polyethylene wear, and early mechanical failure of the knee replacement.

Our Factory

Our factory is equipped with over 60 advanced CNC machines operated by 100+ skilled technicians, a 300 m² GMP-compliant clean room, and a 10,000 m² production facility. We maintain a CNAS and ISO 17025 certified testing center, invest heavily in CNC turning technology, and utilize high-precision inspection systems including CMM, PP, and QV to ensure product quality and consistency.

FAQs of Our Company and Factory - PS Knee Prosthesis Instrument Set-I

What is your typical delivery time?

We offer fast and reliable global shipping. Standard lead times range from 7 to 15 working days, depending on order quantity and customization requirements. Express delivery options are also available upon request.

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Can I get samples before placing a bulk order?

Yes, samples are available for evaluation. Please contact our sales team to request product samples and shipping arrangements.

Do you support OEM or custom manufacturing?

Absolutely. We offer OEM/ODM services including custom packaging, branding, and product development tailored to your specifications.