Zimmer® Gender Solutions™ NexGen ® High-Flex Knee
Overview
|
Women and men are different. That’s not news to the medical establishment. What is news is that Zimmer is first in the orthopaedic industry to address this fact… With the introduction of the Zimmer Gender Solutions NexGen High-Flex Implants. What makes them revolutionary is the way in which they compensate for the most important differences between women’s and men’s knees. It isn’t strictly a matter of size; it’s a matter of shape. |
|
|
Why a woman’s knee? A growing body of research has led to breakthroughs in distinctive female and male diagnoses and treatments — for conditions ranging from heart disease to rheumatoid arthritis. The need to account for gender-specific solutions in orthopaedics is apparent. |
|
-
Orthopaedic surgeons have reported anatomical differences in women’s and
men’s knees for years.1,2,3,4,5,6,7,8
- Orthopaedic surgeons often have to consider intraoperative adjustments during knee surgery to accommodate women’s anatomical differences. 4
- Women account for nearly two-thirds of knee arthroplasties performed annually in the U.S.9,10
- Women are three times more likely than men to forego knee arthroplasty. 11
References:
-
Hitt K, Shurman IIJ, Greene K, et al. Anthropometric measurements of the
human knee: correlation to the sizing of current knee arthroplasty
systems. J Bone Joint Surg. 2003;85:155-122.
-
Poilvache PL, Insall JN, Scuderi GR, Font-Rodriguez DE. Rotational
landmarks and sizing of the distal femur in total knee arthroplasty,
Clin Orthop. 1996;331:35-46.
-
Vaidya SV, Ranawat CS, Aroojis A, Laud NS. Anthropometric measurements to
design total knee prostheses for the Indian population. J Arthroplasty.
2000;15(1):79-85.
-
Chin KR, Dalury DF, Zurakowski D, Scott RD. Intraoperative measurements of
male and female distal femurs during primary total knee arthroplasty. J
Knee Surg. 2002;15(4):213-214.
-
Csintalan RP, Schulz MM, Woo J, McMahon PJ, Lee TQ, Gender Differences in
Patellofemoral Joint Biomechanics, Clin Orthop. September, 2002;
402 :260-269.
-
Aglietti P, Insall JN, Cerulli G. Patellar pain and incongruence. I:
Measurements of incongruence. Clin Orthop. 1983;176:217-224.
-
Hsu RWW, Himeno S, Coventry MB, Chao EYS. Normal axial alignment of the
lower extremity and load bearing distribution at the knee, Clin Orthop
. 1990;255:215-227.
-
Woodland LH, Francis RS. Parameters and comparisons of the quadriceps
angle of college-aged men and women in the supine and standing positions.
American Journal of Sports Medicine. 1992;20:208-211.
-
U.S.Department of Health and Human Services, Centers for Disease Control
and Prevention, National Centerfor Health Statistics. 2003 National
Hospital Discharge Survey, Advance Data No. 359. July 8, 2005; Table 8:14.
-
U.S.Department of Health and Human Services, Centers for Disease Control
and Prevention, National Centerfor Health Statistics. 2003 National
Hospital Discharge Survey, Advance Data No. 359. July 8, 2005; Table 10:16.
-
Hawker G, Wright J, Coyte P, et al., Differences between men and women in
the rate of use of hip and knee arthroplasty, The New England Journal
of Medicine. 342:1016-1022, 2000.
-
Mahfouz M, Booth R Jr, Argenson, J, Merkl, BC, Abdel Fatah EE, Kuhn MJ.
Analysis of variation of adult femora using sex specific statistical
atlases. Presented at: Computer Methods in Biomechanics and Biomedical
Engineering Conference; 2006.
-
Data on file at Zimmer
-
Scott NW. Pearls on avoidance and treatment of intraoperative and
postoperative complications – exposure of the stiff knee. Presented at:
American Association of Hip and Knee Surgeons, Knee Society Specialty Day;
March 25, 2006.
- Bengs BC, Scott RD. The effect of patellar thickness on intraoperative knee flexion and patellar tracking in total knee arthroplasty. J Arthroplasty. 2006;21(5):650-655.
