Sagittal laxity in vivo after total knee arthroplasty

Ishii, Yoshinori; Matsuda, Yoshikazu; Ishii, Ryo; Sakata, Shigeo; Omori, Go

doi:10.1007/s00402-004-0712-3

Cited by 42 publications

(48 citation statements)

References 46 publications

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“…In 30°of knee flexion, average anterior laxities between 2.9 and 5.3 mm are found for other total knee arthroplasties [2,7,12]. For the posterior laxity of the balanSys TM TKA, no knee laxity at all was found in this study.…”

Section: Discussioncontrasting

confidence: 35%

The anterior–posterior laxity after total knee arthroplasty inserted with a ligament tensor

Hal

Hellemondt

Wymenga

et al. 2007

Knee Surg Sports Traumatol Arthr

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Goal of this study is to determine the anterior-posterior laxity in 30 degrees of knee flexion for a posterior cruciate retaining total knee arthroplasty with a relative dished insert and implanted with a ligament tensor. Furthermore, the correlation between these AP laxities and the postoperative range of motion (ROM) and postoperative Knee Society Score (KSS) is analysed. Fifty-one balanSys total knee arthroplasties were performed in 49 patients between 1998 and 2000. These arthroplasties are analysed with respect to AP laxity (Rolimeter), ROM and KSS with a mean follow-up of 4.6 years. The mean anterior laxity is 2.8 mm with no posterior laxities at all. The average postoperative ROM is 110 degrees with an average KSS of 142. No correlations between AP-laxity and postoperative ROM or between AP-laxity and postoperative KSS are found. A posterior cruciate retaining TKA with a relative dished insert and implanted with a tensor is very stable in the anterior-posterior direction in 30 degrees of knee flexion. This limited laxity does not seem to disadvantage the mean postoperative ROM and KSS, when compared to other TKA studies.

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Section: Discussioncontrasting

confidence: 35%

The anterior–posterior laxity after total knee arthroplasty inserted with a ligament tensor

Hal

Hellemondt

Wymenga

et al. 2007

Knee Surg Sports Traumatol Arthr

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“…An explanation for this might be the fact that for some of the pathologies no clear definitions are available at the moment. For example, flexioninstability might lead to anterior knee pain, but while there are methods to display this problem [20] there is a lack of information where the cutoff levels for a relevant instability would be [8].…”

Section: Discussionmentioning

confidence: 97%

Update on the etiology of revision TKA — Evident trends in a retrospective survey of 1449 cases

et al. 2015

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“…The topic is important because, as illustrated by a recent report [12], better ROM is associated with increased patient satisfaction. Knee stability after TKA also is known to be an important driver of patient-specific outcomes after reconstruction and is associated with correct AP translation [4, 6, 10, 13, 14, 16, 24–26]. …”

Section: Introductionmentioning

confidence: 99%

Anteroposterior Translation Does Not Correlate With Knee Flexion After Total Knee Arthroplasty

Ishii¹,

Noguchi²,

Takeda³

et al. 2013

Clin Orthop Relat Res

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BackgroundStiffness after a TKA can cause patient dissatisfaction and diminished function, therefore it is important to characterize predictors of ROM after TKA. Studies of AP translation in conscious individuals disagree whether AP translation affects maximum knee flexion angle after implantation of a highly congruent sphere and trough geometry PCL-substituting prosthesis in a TKA.Questions/purposesWe investigated whether AP translation correlated with maximum knee flexion angle (1) in patients who were awake, and (2) who were under anesthesia (to minimize the effects of voluntary muscle contraction) in a TKA with implantation of a PCL-substituting mobile-bearing prosthesis.MethodsAP translation was examined under both conditions in 34 primary TKAs. Measurements under anesthesia were performed when the patients were having anesthesia for a contralateral TKA. Awake measurements were made within 4 days of that anesthetic session in patients who had no residual sedative effects. The average postoperative interval for the index TKA flexion measurements was 23 months (range, 6–114 months). AP translation was evaluated at 75° flexion using an arthrometer.ResultsThere was no correlation between postoperative maximum knee flexion and AP translation at 75° during consciousness. There was no correlation between postoperative maximum knee flexion and AP translation under anesthesia.ConclusionAP translation at 75° flexion did not correlate with postoperative maximum knee flexion in either awake or anesthetized patients during a TKA with implantation of a posterior cruciate-substituting prosthesis.Level of EvidenceLevel II, therapeutic study. See the Instructions for Authors for a complete description of levels of evidence.

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Sagittal laxity in vivo after total knee arthroplasty

Cited by 42 publications

References 46 publications

The anterior–posterior laxity after total knee arthroplasty inserted with a ligament tensor

The anterior–posterior laxity after total knee arthroplasty inserted with a ligament tensor

Update on the etiology of revision TKA — Evident trends in a retrospective survey of 1449 cases

Anteroposterior Translation Does Not Correlate With Knee Flexion After Total Knee Arthroplasty

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