DJO Surgical Knees, Encompassing Gender and Culture

Sizes Designed for Men and Women

couple

Research has shown that women have smaller medial-lateral femoral dimensions than men1. This difference is incorporated into the sizing of DJO Surgical’s femoral implants.

DJO Surgical’s knee replacements accommodate both genders by providing narrower small sizes which are mostly implanted in women, and wider large sizes which are typically implanted in men. This will help to reduce overhang, which can lead to soft tissue impingement and pain.

ap and ml comparitive dimentions

Better Femoral and Tibial Anatomic Fit

The 3DKneeTM and Foundation® femoral components are designed with a narrow anatomic anterior flange to achieve an optimal fit.

Additionally, the 3DKnee is the only total knee designed to replicate the natural narrow lateral femoral condyle and wide medial condyle.

Unlike most tibia implants, DJO Surgical’s tibia implants are uniquely anatomic (right and left specific). Data shows that the medial tibial condyle is larger than the lateral tibial condyle3,4. Symmetric tibia implants (figure below, red line) placed on a patient’s asymmetric tibia can cause overhang or underhang which creates the risk of soft tissue impingement or component subluxation.

  
3DKnee and Foundation Femoral Components
The 3DKnee and Foundation femoral components are designed with a narrow anatomic anterior flange to achieve an optimal fit.
Proxial Tibial
The red outline represents a symmetric component which is overhanging the proxial tibial, while the green outline represents DJO Surgical’s asymmetric baseplate.

Bone Resurfacing Implants

DJO Surgical’s sleek and simple surgical instrumentation, used to implant the 3DKnee, Foundation and EPIK® implants, allows the surgeon to replace the thin layer of bone that is removed during surgery.

 thin implants
   

Data From:
1. Hitt K, Shurman JR, Greene K, McCarthy J, Moskal J, Hoeman T, Mont M. Anthropometric Measurements of the Human Knee: Correlation to the Sizing of Current Knee Arthroplasty Systems. JBJS 85-A Suppl 4. 2003.

2. Competitive Sizing from Literature.

3. Mensch JS, Amstutz HC. Knee Morphology as a Guide to Knee Replacement. Clin Orthop Relat Res. 1975 Oct;(112):231-41.

4. Dupont JA, Weinstein AM, Townsend, PR. Tibial Plateau Coverage in Total Knee Replacement. Tenth coverage and Annual Meeting Soc. Biomaterials. Washington DC, April 27-May1, 1984.