Soft Tissue Balance in Total Knee Arthroplasty

Matsumoto, Tomoyuki; Muratsu, Hirotsugu; Kubo, Seiji; Kurosaka, Masahiro; Kuroda, Ryosuke

doi:10.5772/26849

Cited by 1 publication

(1 citation statement)

References 106 publications

(120 reference statements)

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“…Reports on the design and the methodology of the UKA tensor have previously been published. 15 The UKA tensor consists of three parts—an upper plate, a lower platform plate with a spike, and an extra-articular main body. Upper and lower plates are to be placed at the medial compartment of the knee.…”

Section: Methodsmentioning

confidence: 99%

Difference in the Extension Gap Between Osteoarthritis and Osteonecrosis in Medial Fixed-Bearing Unicompartmental Knee Arthroplasty with the Spacer Block Technique

MD,

et al. 2024

J Knee Surg

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The spacer block technique is widely used in medial fixed-bearing unicompartmental knee arthroplasty (UKA) for osteoarthritis (OA) and osteonecrosis (ON), while it is still unclear if there is any difference in the extension gap between UKAs for the two conditions. To clarify the question, the data from 87 consecutive patients (OA: 57 patients and ON: 30 patients) who underwent medial fixed-bearing UKA with the spacer block technique were retrospectively collected and analyzed. The component gap between the medial tibial osteotomy surface and the femoral trial prosthesis in extension was measured using a UKA tensor, and the preosteotomy gap was calculated in each condition. Also, pre- and postoperative coronal hip–knee–ankle (HKA) angles, the thickness of the insert, and the amount of distal femoral and proximal tibial osteotomy were measured and compared between the two groups. As a result, the mean preosteotomy gap in Group OA and Group ON was 5.4 and 3.7 mm, respectively (p < 0.001). The amount of change in HKA angle following UKA in Group OA and Group ON was 4.4and 3.8 degrees, respectively (p = 0.044), while no significant difference was found regarding pre- and postoperative HKA angle between them. Also, thinner inserts tended to be used in Group ON than in Group OA, while no significant difference in the amount of osteotomies was found between them. Since knees with OA and ON showed different biomechanical conditions at medial fixed-bearing UKA probably for the difference in the amount of remaining cartilage, the surgical technique should be carefully considered for each condition.

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Section: Methodsmentioning

confidence: 99%

Difference in the Extension Gap Between Osteoarthritis and Osteonecrosis in Medial Fixed-Bearing Unicompartmental Knee Arthroplasty with the Spacer Block Technique

MD,

et al. 2024

J Knee Surg

View full text Add to dashboard Cite

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Soft Tissue Balance in Total Knee Arthroplasty

Cited by 1 publication

References 106 publications

Difference in the Extension Gap Between Osteoarthritis and Osteonecrosis in Medial Fixed-Bearing Unicompartmental Knee Arthroplasty with the Spacer Block Technique

Difference in the Extension Gap Between Osteoarthritis and Osteonecrosis in Medial Fixed-Bearing Unicompartmental Knee Arthroplasty with the Spacer Block Technique

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