Intraoperative joint balancing procedure using an imageless robotic assisted technique does not necessarily result in kinematically aligned bicruciate stabilized total knee arthroplasty

Kaneko, Takao; Yamamoto, Ayakane; Takada, Kazutaka; Yoshizawa, Shu

doi:10.1007/s11701-022-01429-2

Cited by 2 publications

(9 citation statements)

References 30 publications

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“…The value of the angular divergence of the femoral component relative to the tibial component is defined as the rotational mismatch (Fig. 2) [27] 3DCT three-dimensional computed tomography measurements, Mean Standard deviation, and range were provided, SD Standard deviation, ns not significant In this study, the rotational angle for the femoral component was 2.4 ± 2.6° and 9.2 ± 2.6° for the RA group and Manual group cohorts, respectively (p < 0.01), and RA-TKA reduced the rotational mismatch outliers between femoral and tibial components compared to Conv-TKA (p < 0.01).…”

Section: Discussionmentioning

confidence: 99%

“…The postoperative 3DCT images of the femur and tibia were superimposed onto those of the preoperative 3DCT plan using ZedView software (Fig. 2) [12, 22, 26, 27].…”

Section: Methodsmentioning

confidence: 99%

“…A positive value represents external rotation, and a negative value represents internal rotation of the femoral and tibial components. The absolute value of the angular divergence of the femoral component relative to the tibial component is defined as the rotational mismatch [27]. E/R; external rotation, I/R; internal rotation…”

Section: Methodsmentioning

confidence: 99%

“…Image-free handheld RA surgeries were performed using the Navio RA system [12,18,21,[25][26][27]. After inflating a tourniquet to 300 mmHg at the beginning of the procedure, a subvastus arthrotomy was performed.…”

Section: Surgical Proceduresmentioning

confidence: 99%

“…In this technique, the rotational alignment of the tibial component is determined through conformity to the femoral component when the knee is put through a series of full flexionextension cycles [24]. The RA surgical technique continuously tracked the position of the patient's lower limb and the progress of bone resection using a navigation system camera [12,18,21,[25][26][27].…”

Section: Planning Of Prosthesis Position and Bone Resection Wasmentioning

confidence: 99%

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Robotic‐assisted total knee arthroplasty improves the rotational mismatch between femoral and tibial components, but not the forgotten joint score 12: a single‐center retrospective cohort study

Yamamoto,

Kaneko,

Takada

et al. 2023

J. exp. orthop.

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Purpose The primary aim of this study was to compare postoperative short-term patient reported outcome measurements (PROMs) and rotational mismatch between femoral and tibial following conventional jig-based total knee arthroplasty (Conv-TKA) versus robotic-assisted TKA (RA-TKA) using three-dimensional computed tomography (3DCT) measurements. Methods This retrospective, consecutive case–control trial included 83 patients with varus osteoarthritis of the knee undergoing Conv-TKA versus RA-TKA using bi-cruciate stabilized TKA. The rotational mismatch of the femoral and tibial components between the two groups were compared using 3DCT measurements. PROMs (2011 Knee Society Score (KSS), forgotten joint score-12 (FJS-12), patella score were compared in patients between 1 and 2 years postoperatively. Results The two groups did not exhibit significant differences in any of the following preoperative factors: age at surgery, body mass index (BMI), preoperative range of motion (ROM), hip-knee-ankle (HKA) angle. There were no significant differences in postoperative HKA angle and tibial rotation angle, the absolute values of the femoral rotational angle and rotational mismatch were significantly smaller in the RA-TKA group than in the Conv-TKA group (both p < 0.01). Neither Postoperative PROMs (2011 KSS: pain, patient satisfaction, patient expectation, advanced activities score) nor patella score differed significantly between the groups, but FJS-12 was significantly better in the Conv-TKA group than in the RA-TKA group (p < 0.01). Conclusions RA-TKA did not improve FJS-12 compared to Conv-TKA, but did result in more accurate rotational alignment of femoral component and rotational mismatch between the femoral and tibial components. Level of evidence IV.

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Section: Discussionmentioning

confidence: 99%

“…The postoperative 3DCT images of the femur and tibia were superimposed onto those of the preoperative 3DCT plan using ZedView software (Fig. 2) [12, 22, 26, 27].…”

Section: Methodsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%