Mechanoreceptors Found in a Posterior Cruciate Ligament From a Well-Functioning Total Knee Arthroplasty Retrieval

Mihalko, William M.; Creek, Aaron T.; Mary, Michelle N.; Williams, John L.; Komatsu, David E.

doi:10.1016/j.arth.2010.02.013

Cited by 19 publications

(12 citation statements)

References 18 publications

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“…Perhaps, the use of a larger number of patients may have shown that superior functional outcomes were obtained when using the CR-Flex implant. This would suggest more consistent axial rotation throughout flexion in the CR-type prostheses with condyle asymmetry7 and preserved proprioception through retention of the PCL30,31 might be helpful in performing daily living activities. Similarly, Conditt, et al,25 using a new scoring system based on functional performance during specific high-flexion activities, reported that patients with CR knees showed better functional outcomes than patients with PS knees during specific high-flexion activities such as squatting, kneeling and gardening.…”

Section: Discussionmentioning

confidence: 99%

Evaluation of Postoperative Range of Motion and Functional Outcomes after Cruciate-Retaining and Posterior-Stabilized High-Flexion Total Knee Arthroplasty

et al. 2012

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PurposeThe purpose of this study was to compare postoperative range of motion and functional outcomes among patients who received high-flexion total knee arthroplasty using cruciate-retaining (CR-Flex) and posterior-stabilized (PS-Flex) type prostheses.Materials and MethodsAmong 127 patients (186 knees) who underwent high-flexion total knee arthroplasty between 2005 and 2007, 92 knees were placed in the CR-Flex group, and 94 knees were placed in the PS-Flex group. After two years of postoperative follow-up, clinical and radiographic data were reviewed. Postoperative non-weight-bearing range of knee motion, angle of flexion contracture and functional outcomes based on the Western Ontario and McMaster Universities Osteoarthritis (WOMAC) functional sub-scale were assessed and compared between the two groups.ResultsAfter the 2-year postoperative period, the mean range of motion was 131° in the CR-Flex group and 133° in the PS-Flex group. There were no significant differences in postoperative range of motion between the two groups. Only age at operation and preoperative range of motion were significantly associated with postoperative range of motion after high-flexion total knee arthroplasty. Postoperative functional outcomes based on the WOMAC functional sub-scale were slightly better in the CR-Flex group (9.2±9.1 points) than in the PS-Flex group (11.9±9.6 points); however, this difference was not statistically significant (p=non-significant).ConclusionThe retention or substitution of the posterior cruciate ligament does not affect postoperative range of motion (ROM) or functional outcomes, according to 2 years of postoperative follow-up of high-flexion total knee arthroplasty.

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Section: Discussionmentioning

confidence: 99%

Evaluation of Postoperative Range of Motion and Functional Outcomes after Cruciate-Retaining and Posterior-Stabilized High-Flexion Total Knee Arthroplasty

et al. 2012

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“…In a histological investigation, Mihalko et al found a strong evidence of proprioceptors, although they do not appear to have a demonstrable clinical effect [11,12].…”

Section: Introductionmentioning

confidence: 99%

How much of the PCL is really preserved during the tibial cut?

Matziolis

Mehlhorn

Schattat

et al. 2011

Knee Surg Sports Traumatol Arthrosc

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“…7 Recent studies have shown that CR TKAs result in good long-term functional and subjective outcomes. [11][12][13][14] It has been postulated that these prostheses have added importance for proprioception 15 and provide restoration of physiologic kinematics. 16 However, the relationship of the CR prostheses to hospital readmissions has not been extensively examined.…”

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confidence: 99%

Readmission Rates for Cruciate-Retaining Total Knee Arthroplasty

et al. 2014

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Currently, the readmission rates for patients treated with cruciate-retaining (CR) prostheses have not been widely evaluated. The purpose of this study was to report on readmission rates after CR total knee arthroplasties (TKAs) and to evaluate the potential contributing factors for these events. We reviewed a prospectively collected database of 412 patients (441 TKAs) at 11 institutions. This included 170 men and 242 women who had a mean age of 66 years. Overall, there were 15 unplanned readmissions (3.4%) in 15 patients during the first 90 days following discharge after the index arthroplasty procedure. This included a readmission rate of 2% at 30 days and 3.2% at 60 days after discharge. Of the 15 readmissions, nine were due to general medical-related causes, while the other six events were as a result of operative site or surgery-related complications. However, readmitted patients had a 29.8% higher incidence of cardiovascular disorders at baseline compared with the patients who were not readmitted. The 30- and 90-day readmission rates for patients treated with cruciate-retaining (CR) TKAs are encouraging since these are comparable to previously reported readmission rates of other prostheses. Unplanned hospital readmissions are expensive and an undesired outcome for the patient, physician, and health care system. The authors believe that the positive mid-term clinical performance of this CR prosthesis may have contributed to the lower readmission rates, and believe that this is a stepping stone for further larger prospective studies and is necessary to better evaluate these findings.

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Mechanoreceptors Found in a Posterior Cruciate Ligament From a Well-Functioning Total Knee Arthroplasty Retrieval

Cited by 19 publications

References 18 publications

Evaluation of Postoperative Range of Motion and Functional Outcomes after Cruciate-Retaining and Posterior-Stabilized High-Flexion Total Knee Arthroplasty

Evaluation of Postoperative Range of Motion and Functional Outcomes after Cruciate-Retaining and Posterior-Stabilized High-Flexion Total Knee Arthroplasty

How much of the PCL is really preserved during the tibial cut?

Readmission Rates for Cruciate-Retaining Total Knee Arthroplasty

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