Comparison of ultra-congruent mobile- and fixed-bearing navigation-assisted total knee arthroplasty with minimum 5-year follow-up

Kim, Seong Hwan; Lim, Ji Hong; Ko, Young-Bong; Song, Min-Gu; Lee, Han-Jun

doi:10.1007/s00167-016-4147-5

Cited by 8 publications

(3 citation statements)

References 38 publications

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“…UC design has an increased anterior buildup and a more conforming articular surface to prevent anterior displacement during knee flexion and provides an easy option to substitute the PCL without additional bone resection. 6 Many studies have compared the results between UC and the other implant types-some studies compared mobile-bearing UC and PS design, 7,8 some other studies compared fixed-bearing UC implant and cruciate-retaining design, 9,10 and other previous studies compared between fixed-bearing UC and PS design in respect of intraoperative condition [11][12][13] -the results have been controversial. Few studies compared between fixed-bearing UC and PS design in terms of range of motion (ROM), stability, and clinical outcomes; moreover, these studies are too short-term follow-up study or small volume study.…”

Section: Introductionmentioning

confidence: 99%

Similar outcomes between ultracongruent and posterior-stabilized insert in total knee arthroplasty: A propensity score-matched analysis

Lee

Yeom

Lee

et al. 2019

J Orthop Surg (Hong Kong)

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Purpose: (1) To compare postoperative range of motion (ROM), stability, and clinical outcomes between fixed-bearing posterior-stabilized (PS) and ultracongruent (UC). (2) The effect of postoperative stability on ROM and clinical outcomes was also evaluated in both designs. Materials and methods: Propensity score matching was conducted for age, gender, body mass index, preoperative ROM, Western Ontario and McMaster Universities Osteoarthritis (WOMAC) index, Knee Society (KS) scores, hip–knee–ankle (HKA) alignment, and follow-up period. Two hundred patients (100 PS and 100 UC) were enrolled. Preoperative and final follow-up outcomes including postoperative ROM, anteroposterior (AP) stability (good, fair, and poor), WOMAC index, and KS scores were compared. Then, postoperative outcomes compared between the PS and UC. We also analyzed if AP stability was associated with the postoperative outcomes in both implant designs. Results: In both groups, ROM and clinical outcomes of final follow-up showed improvement than preoperation. Statistical significance was not determined between the PS and UC groups in terms of postoperative ROM (PS vs. UC, 134.6° vs. 133.4°, p = 0.13), stability (good/fair/poor, 91/9/0 vs. 84/14/0, p = 0.376), WOMAC index, KS scores, and outliers of HKA alignment (15% vs. 10%, p = 0.393). “Fair” stability showed inferior KS scores but greater ROM than “good” stability in both designs. Conclusion: TKA with UC insert provided similar ROM, AP stability, and clinical outcomes when compared to PS insert. In both designs, greater postoperative ROM was found but inferior clinical outcomes were found when TKA resulted in fair stability instead of good stability. Level of evidence III: Retrospective comparative study.

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Section: Introductionmentioning

confidence: 99%

Reliability and Validity of the Femorotibial Mechanical Axis Angle in Primary Total Knee Arthroplasty: Navigation versus Weight Bearing or Supine Whole Leg Radiographs

Kim

Park

Song

et al. 2018

Knee Surg Relat Res

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PurposeTo evaluate the reliability and validity of the femorotibial mechanical axis angle from radiographs in the weight bearing (WB) and supine positions compared with navigation-measured values.Materials and MethodsSixty-eight cases of navigation-assisted total knee arthroplasty (TKA) were included. The pre- and postoperative whole leg radiographs (WLRs) in WB and supine positions were compared with the initial and final navigation values.ResultsThe mean mechanical axis angle from the preoperative WBWLR and navigation were not statistically different (p=0.079) and were correlated strongly with each other (intraclass correlation [ICC], 0.818). However, on postoperative measurements, although the WBWLR and navigation values were not different (p=0.098), they were not correlated with each other (ICC, 0.093). The standard error of measurement was 1.8°±3.6° for the preoperative WBWLR and 2.5°±4.8° for the postoperative WBWLR. The validity that was determined by the Bland-Altman plot was not acceptable for both pre- and postoperative measurements.ConclusionsThe preoperative WBWLR could provide accurate but not precise measurement value of the femorotibial mechanical axis angle for navigation-assisted TKA, and postoperative measurements in navigation were not comparable with radiographic measurements. The lack of agreement was found between the radiographic and navigation measurements of the coronal alignment regardless of pre- or postoperative evaluation although the accuracy was found acceptable.Level of EvidenceLevel 4

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“…Despite a lack of conclusive evidence for the appropriate postoperative alignment, the computer-assisted surgical (CAS) navigation system was designed to obtain more reliable and reproducible intraoperative alignment than conventional TKA (7)(8)(9)(10)(11)(12). In general, CAS navigation can be categorized into three groups: image-based or imageless large-console navigation and handheld navigation.…”

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confidence: 99%

Current role of handheld navigation system in total knee arthroplasty: where we are?

Kim¹,

Kim²,

Ok³

et al. 2020

Ann Transl Med

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Comparison of ultra-congruent mobile- and fixed-bearing navigation-assisted total knee arthroplasty with minimum 5-year follow-up

Abstract: IV.

Cited by 8 publications

References 38 publications

Similar outcomes between ultracongruent and posterior-stabilized insert in total knee arthroplasty: A propensity score-matched analysis

Similar outcomes between ultracongruent and posterior-stabilized insert in total knee arthroplasty: A propensity score-matched analysis

Reliability and Validity of the Femorotibial Mechanical Axis Angle in Primary Total Knee Arthroplasty: Navigation versus Weight Bearing or Supine Whole Leg Radiographs

Current role of handheld navigation system in total knee arthroplasty: where we are?

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