Laser scanning as a useful tool in implant retrieval analysis: a demonstration using rotating platform and fixed bearing tibial inserts.
Objective methods for analyzing arthroplasty retrieval implants are needed. To address this, we used a readily available laser scanner to analyze damage deviations between cohorts of rotating platform and fixed bearing inserts previously analyzed using traditional, subjective retrieval analysis methods. We asked the following research questions: 1) Do articular surface deviations measured by the scanner correlate with the subjective damage scores? 2) Do articular surface deviations differ between inserts due to design differences? Correlations between deviations and damage scores were present in RP but not FB inserts. Seven different deviation patterns were present between the RP and FB inserts and were a function of design. In conclusion laser scanning was found to be a useful objective tool for analyzing arthroplasty retrievals.
Department of Orthopaedic Surgery, Hospital for Special Surgery, New York, New York.
Kirsten E
KE
Stoner
Nader A
NA
Nassif
Timothy M
TM
Wright
Douglas E
DE
Padgett
D000368:Aged; D000369:Aged, 80 and over; D019645:Arthroplasty, Replacement, Knee / Q000295:instrumentation*; D020878:Device Removal; D019544:Equipment Failure Analysis / Q000379:methods*; D005260:Female; D006621:Hip Joint / Q000601:surgery; D006801:Humans; D021621:Imaging, Three-Dimensional / Q000379:methods*; D007720:Knee Prosthesis; D007834:Lasers / Q000706:statistics & numerical data*; D008297:Male; D008875:Middle Aged; D020959:Polyethylene; D011474:Prosthesis Design; D011475:Prosthesis Failure; D013314:Stress, Mechanical; D013977:Tibia / Q000601:surgery*
D020959:Polyethylene
arthroplasty; implant retrieval; laser scanning