What Makes Axis Knee System unique?

February 7, 2018


There are numerous Total Knee Arthroplasty systems in the market with each system having different sets of instrumentation and different techniques that accompany each set. There are several things that make the surgical technique of Axis Knee System unique.


The goal of any Total Knee Arthroplasty surgery is to align the lower limb. This alignment is guided by three points namely the center of the femoral head, the center of the knee and the center of the ankle. It is relatively easy to get the center of the knee and the center of the ankle because they are accessible during surgery. The femoral head is deep in the hip and is outside the surgical field. Most systems will use guide rods inserted in the femoral canal and reference off of that, getting an average value in degrees that they assume will point to the femoral head. Some use preoperative x-rays to locate the femoral head and put a physical marker that the surgeon can palpate during surgery. More modern systems use expensive computer navigation to pinpoint it.The Axis Knee System uses a Femur Mechanical Axis Finder (FMAF) that does not require radiation nor expensive equipment.


Most systems use alignment guides that go into the femoral canal. Some have guides that also go into the tibial canal. Violating the canal can potentially lead to fat embolism or activation of coagulation or bleeding may occur in the reamed canal. The Axis Knee System technique does not violate the canal.


Total Knee Arthroplasty is not just about cutting bone. The more important part of the surgery is balancing the ligaments that hold the bones together. The Axis Knee System emphasizes this by performing this step ahead of bone cuts.


Once the knee ligaments are initially balanced, the bone cutting guides are positioned onto their respective surfaces. Most systems cut the femur, cut the tibia and then attempt to balance the two by making adjustments--either by releasing more ligamentous tissue or cutting more bone. Other systems will cut the tibia first and then the femur but still balance the knee by adjusting--either releasing ligaments or cutting more bone. The Axis Knee System relates the femur and the tibia BEFORE cutting bone so that there is less adjustment needed. All bone cuts are made in one position (unlike in the other systems where you have different knee position when cutting the femur and another position when cutting the tibia). This will conserve bone by removing only the required thickness. This will save time by balancing the bones even before making the cuts.

Feb 12, 2019. Axis Knee System was featured in the first DOST-PCHRD Talakayang HeaRT Beat, Press and Media Conference

Oct 25, 2018. Mahahalagang Kaalaman Tungkol sa Total Knee Replacement

Jul 13, 2018. Karagdagagang Impormasyon Tungkol sa Axis Knee System

May 24, 2018. Axis Knee System is Available Nationwide!

Nov 22, 2017. Axis Knee System 2nd Annual Thanksgiving Dinner

Aug 30, 2017. Dr. Ramon B. Gustilo recipient of 2017 UPAA Distinguished Alumnus Award in Medicine

Jul 17, 2017. Axis Knee System team awarded with Outstanding Technology Commercialization Award at NSTW 2017

May 04, 2017. POA 27th Midyear Convention

Mar 24, 2017. AAOS 2017 Annual Meeting at San Diego, CA

Nov 22, 2016. 67th POA Annual Convention

Nov 12, 2016. 22 surgeons attended Axis Knee System Training at POC

Oct 06, 2016. Orthopaedic International goes to THAILAND!

Sep 30, 2016. Axis goes to (Bicol) Access!

Aug 18, 2016. Filipino orthopedic surgeons begin use of modern, cheaper way of knee surgery

Aug 01, 2016. DOST showcases PH-designed knee replacement

Jul 27, 2016. OII welcomed the Senior Citizens Association for a plant tour

Jun 16, 2016. Pinoy company now manufactures knee implants designed for Asians

Jun 01, 2016. No More 'Going Weak at the Knees'

May 19, 2016. Orthopaedic International clears way for conquering Osteoarthritis

May 18, 2016. Orthopedic global expert promotes PCHRD-supported technology “Axis Knee System”

May 15, 2016. Axis knee System: Confidence in Every Step

May 09, 2016. Locally Developed Knee Surgical Technique Puts Patient Back Into Life Mode

May 06, 2016. DOST-PCHRD Conducts Science Media Tour For Awareness On “Knee Replacement Surgery” Availability In PH

Mar 02, 2016. OII at the AAOS Annual Convention in Orlando, Florida

Nov 01, 2015. Joint effort propels development of ‘affordable’ knee replacements

Jul 27, 2015. DOST develops knee replacement at half the cost of regular treatment

Jul 22, 2015. Philippine firm makes knee implants affordable


Orthopaedic International, Inc.