TY - JOUR
T1 - A Short-Term Multicenter Analysis of Radiolucent Lines in a Single Uncemented Rotating Platform Implant for Total Knee Arthroplasty
AU - Desmarais, Jason
AU - Dalury, David
AU - Bernasek, Thomas L.
AU - Fisher, David A.
AU - Nunley, Ryan M.
AU - Fickenscher, Marie Claire
AU - Gorab, Robert S.
N1 - Funding Information:
The authors declare the following financial interests/personal relationships which may be considered as potential competing interests: D. Dalury receives royalties from, is a paid consultant for, and receives reseach support as a principal investigator from DePuy Syhthes and has stock or stock options in Foundry Therapeutics. T. L. Bernasek receives royalties for intellectual property transfer from DePuy Syhthes; gave paid lectures for DePuy Syhthes; is a paid consultant for and receives reseach support as a principal investigator from DePuy Syhthes; receives fellowship meeting support from Stryker and DePuy Synthes; and is a trustee in Florids Orthopaedic Society and Hillsborough County Medical Association. R. M. Nunley receives royalties from Microport and DePuy Synthes; is a paid consultant for DePuy Synthes, Ethicon, Medtronic, Mirus, Rom Tech, Smith & Nephew, and Surgical Care Affiliates; has stock or stock options in Hyalex and Rom Tech; receives reseach support as a principal investigator from Biomet, DePuy Synthes, Smith & Nephew, and Stryker; and is a treasurer in AAHKS and past president of SOA. R. S. Gorab receives royalties from, is a paid consultant for, and receives reseach support as a principal investigator from DePuy Syhthes. D. A. Fisher receives royalties from and is in the speakers' bureau of DePuy Synthes.
Publisher Copyright:
© 2022 The Authors
PY - 2022/6
Y1 - 2022/6
N2 - Background: Uncemented total knee arthroplasty is increasing as a potential solution for aseptic loosening via biologic fixation and to increase operative efficiency. However, postoperative radiolucent lines (RLLs) remain a concern for some clinicians. We report on a multicenter analysis of these RLLs over a 2-year period to identify their incidence, progression, and clinical significance. Material and methods: Institutional review board approval was obtained for this retrospective, multicenter case series. A total of 312 patients treated with a single cruciate-retaining, fully porous coated femoral and tibial component design were included in the study. All patients were evaluated clinically and radiographically in the early postoperative period and at final follow-up (average 2.0 years). Average age of the study group was 58.2 years, and average body mass index was 30.7. Of the total, 66% were male, and 34% were female. Two independent surgeons evaluated the radiographs at the initial postoperative visit and at the most recent follow-up for RLLs. Knee Society Scores and range of motion (ROM) were collected at each visit. Results: We identified RLLs in 25% of patients. All RLLs were less than 1 mm in size and located at the periphery of the tibial implant. None of the RLLs were progressive. At the final follow-up, compared with early postoperative imaging, no new RLLs were identified. Average ROM in flexion was 124 degrees, and the average Knee Society Scores at the most recent clinical follow-up was 96. Conclusion: RLLs are commonly seen following cementless TKA, most commonly underneath the tibial tray. Based on this data set, there does not appear to be progression of these RLLs with time, and they do not appear to have an effect on ROM or clinical outcome at 2 years.
AB - Background: Uncemented total knee arthroplasty is increasing as a potential solution for aseptic loosening via biologic fixation and to increase operative efficiency. However, postoperative radiolucent lines (RLLs) remain a concern for some clinicians. We report on a multicenter analysis of these RLLs over a 2-year period to identify their incidence, progression, and clinical significance. Material and methods: Institutional review board approval was obtained for this retrospective, multicenter case series. A total of 312 patients treated with a single cruciate-retaining, fully porous coated femoral and tibial component design were included in the study. All patients were evaluated clinically and radiographically in the early postoperative period and at final follow-up (average 2.0 years). Average age of the study group was 58.2 years, and average body mass index was 30.7. Of the total, 66% were male, and 34% were female. Two independent surgeons evaluated the radiographs at the initial postoperative visit and at the most recent follow-up for RLLs. Knee Society Scores and range of motion (ROM) were collected at each visit. Results: We identified RLLs in 25% of patients. All RLLs were less than 1 mm in size and located at the periphery of the tibial implant. None of the RLLs were progressive. At the final follow-up, compared with early postoperative imaging, no new RLLs were identified. Average ROM in flexion was 124 degrees, and the average Knee Society Scores at the most recent clinical follow-up was 96. Conclusion: RLLs are commonly seen following cementless TKA, most commonly underneath the tibial tray. Based on this data set, there does not appear to be progression of these RLLs with time, and they do not appear to have an effect on ROM or clinical outcome at 2 years.
KW - Cementless
KW - Radiolucencies
KW - Total knee arthroplasty
UR - http://www.scopus.com/inward/record.url?scp=85127192442&partnerID=8YFLogxK
U2 - 10.1016/j.artd.2022.02.011
DO - 10.1016/j.artd.2022.02.011
M3 - Article
C2 - 35392363
AN - SCOPUS:85127192442
VL - 15
SP - 34
EP - 39
JO - Arthroplasty Today
JF - Arthroplasty Today
SN - 2352-3441
ER -