Cementless total knee replacement fixation: a contemporary durable solution--affirms.
A retrospective review was performed of patients undergoing primary cementless total knee replacement (TKR) using porous tantalum performed by a group of surgical trainees. Clinical and radiological follow-up involved 79 females and 26 males encompassing 115 knees. The mean age was 66.9 years (36 to 85). Mean follow-up was 7 years (2 to 11). Tibial and patellar components were porous tantalum monoblock implants, and femoral components were posterior stabilised (PS) in design with cobalt-chromium fibre mesh. Radiological assessments were made for implant positioning, alignment, radiolucencies, lysis, and loosening. There was 95.7% survival of implants. There was no radiological evidence of loosening and no osteolysis found. No revisions were performed for aseptic loosening. Average tibial component alignment was 1.4° of varus (4°of valgus to 9° varus), and 6.2° (3° anterior to 15° posterior) of posterior slope. Mean femoral component alignment was 6.6° (1° to 11°) of valgus. Mean tibiofemoral alignment was 5.6° of valgus (7° varus to 16° valgus). Patellar tilt was a mean of 2.4° lateral (5° medial to 28° lateral). Patient satisfaction with improvement in pain was 91%. Cementless TKR incorporating porous tantalum yielded good clinical and radiological outcomes at a mean of follow-up of seven-years.
Department of Radiology, Harbor-UCLA Medical Center, 1000 W. Carson Street, Box 422, Torrance, California, 90509, USA.
L M
LM
Kwong
Department of Radiology, Harbor-UCLA Medical Center, 1000 W. Carson Street, Box 422, Torrance, California, 90509, USA.
E S
ES
Nielsen
Department of Radiology, Harbor-UCLA Medical Center, 1000 W. Carson Street, Box 422, Torrance, California, 90509, USA.
D R
DR
Ruiz
Department of Radiology, Harbor-UCLA Medical Center, 1000 W. Carson Street, Box 422, Torrance, California, 90509, USA.
A H
AH
Hsu
Department of Radiology, Harbor-UCLA Medical Center, 1000 W. Carson Street, Box 422, Torrance, California, 90509, USA.
M D
MD
Dines
Department of Radiology, Harbor-UCLA Medical Center, 1000 W. Carson Street, Box 422, Torrance, California, 90509, USA.
C M
CM
Mellano
D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D019645:Arthroplasty, Replacement, Knee / Q000379:methods*; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007719:Knee Joint / Q000503:physiopathology / Q000601:surgery*; D007720:Knee Prosthesis; D008297:Male; D008875:Middle Aged; D020370:Osteoarthritis, Knee / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000601:surgery*; D017060:Patient Satisfaction; D011474:Prosthesis Design; D011859:Radiography; D016059:Range of Motion, Articular; D012189:Retrospective Studies; D013635:Tantalum; D016896:Treatment Outcome
D013635:Tantalum
Cementless; monoblock patella; porous tantalum; tibia; total knee replacement