Medium term outcome of the LCS cementless posterior cruciate retaining total knee replacements. Follow up and survivorship study of 35 operated knees

Rosenberg, Nahum; Henderson, Ian

doi:10.1016/s0968-0160(00)00080-6

Cited by 11 publications

(4 citation statements)

References 16 publications

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“…The clinical performance of the LCS Complete,17, 18, 20, 21, 40–44 PFC Sigma,3, 11, 45–47 and LCS Complete Duofix cementless tibial trays48–50 have been widely reported. The incidence of radiolucent lines was reported to vary significantly from 0% to >90% of patients for the LCS Complete design.…”

Section: Discussionmentioning

confidence: 99%

Influence of loading and activity on the primary stability of cementless tibial trays

Taylor¹,

Barrett²,

Deffenbaugh³

2012

Journal Orthopaedic Research

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Several potential advantages exist for cementless tibial fixation including preservation of bone stock and increased longevity of fixation. However, clinical results have been variable, with reports of extensive radiolucent lines, rapid early migration, and aseptic loosening. The primary stability of an implant depends on the micromotion of the bone-implant interface, which depends on the kinematics and kinetics of the replaced joint. Finite element analysis was used to examine the micromotion for different activities (walking, stair ascent, stair descent, stand-to-sit, and deep knee bend) for three commercially available tibial tray designs. Similar trends were observed for all three designs across the range of activities. Stair ascent and descent generated the highest micromotions, closely followed by level gait. Across these activities, the mean peak (maximum) micromotions measured across the entire resected surface ranged from 64 to 78 (186-239) mm for PFC Sigma,[61][62][63][64][65][66][67][68][69][70][71][72]) mm for LCS Complete Duofix, and 92-106 (229-264) mm for LCS Complete. The peak micromotions did not necessarily occur at the peak loads. For instance, the peak micromotions for level walking occurred when there were low axial forces, but moderate varus-valgus moments. This highlights the need to examine the whole gait cycle to properly determine the initial stability of tibial tray designs. By exploring a range of activities and interrogating the entire resected surface, it is possible to differentiate between the relative performance of different implant designs. ß

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Section: Discussionmentioning

confidence: 99%

Influence of loading and activity on the primary stability of cementless tibial trays

Taylor¹,

Barrett²,

Deffenbaugh³

2012

Journal Orthopaedic Research

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“…In our series outcome of cemented total knee arthroplasty using LCS prosthesis has give excellent results. Nahum rosen berg and Ian Henderson reported surviourship of 97.1% at 5 year follow up in their study on 35 knees operated using LCS cementless cruciate retaining TKA [10] . At the time of the nine to twelve-year follow-up on Cemented Rotating-Platform Total Knee Replacement John J. Callaghan et al reported that of the 114 knees in the eighty-two patients for whom the final outcome was known, none required a reoperation and none had a dislocation of the mobile bearing prosthesis [4] .…”

Section: Discussionmentioning

confidence: 96%

Short term results of low contact stress total knee arthroplasty: Original article

Anjaneyulu¹,

Kumar²,

Nagesh³

et al. 2019

Int. J. Orthop. Sci.

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Introduction: Conventional fixed-bearing knee prostheses have been proved to be clinically successful in elderly individuals with low activity levels. Polyethylene wear and loosening remain important problems with current fixed-bearing knee prostheses. In mobile-bearing knee prosthesis rotation of polyethylene insert is allowed and the contact area of the articular surface can be greatly increased and there can be a consequent reduction in contact stresses, and decreased polyethylene wear and there is decreased constraint forces at the bone and tibial prosthesis interface leading to decreased loosening. The objective of this study were to assess the clinical outcome of the procedure, to assess the complication rate of bearing dislocation associated with mobile bearing prosthesis, to compare our results with those of other similar studies and to compare the results of the study with those of fixed bearing prosthesis done earlier in our institute. Materials and Methods: This prospective study involved 30 total knee arthroplasties which were performed on 20 patients using Low Contact Stress (LCS) prosthesis. The patients were assessed preoperatively and pos-operatively clinically and radiologicallyat each visit and also using the Knee Society Rating System. The Depuy (Johnson & Johnson) LCS total knee arthroplasty was used in this study. Results: Total of 30 total knee arthroplasties were performed using low contact stress prosthesis in 20 patients. The mean post-operative knee society knee and function scores in the present study were 89.2 (range, 73-97) and 87 (range, 75-100), at mean follow-up period of 16 months. Our study has shown excellent results in 26 knees and good results in 4 knees. Conclusion: LCS prosthesis TKR showed excellent clinical outcome with excellent improvement in the pain relief scores, this study was comparable with other studies and those of studies on total knee replacement with fixed bearing prosthesis performed earlier in the same institute.

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“…Thus the potential susceptibility of LCS® posterior cruciate retaining design for early mechanical failure may overcome the benefits of long term low loosening rates. In an additional later report on a medium term experience with 35 cementless LCS® mobile meniscal bearing total knee replacements in patients with osteoarthritis there was an evidence of 97.1% five year survivorship (17). This high survival rate, with a satisfactory functional outcome, at middle term follow up, has been achieved by following an optimal technique of implantation, according to the designers recommendations, i.e.…”

Section: Introductionmentioning

confidence: 95%

“…The emerged susceptibility of mobile bearing meniscal surfaces to early failure due to dislocation or breakage (8) may provoke a reasonable hesitation to its widespread use. Although the designers of the LCS® mobile meniscal bearing prosthesis claimed that strict operative technique and precise prosthetic placement should avoid its mechanical failure (18), there are only few independent studies that support this claim by showing 0.6% rate of meniscal bearing failure in 2 -10 years of follow up (13,17). And on the other hand there is some evidence that greater deviation from the desired three dimensional placement of the mobile bearing prosthesis does not significantly reduce its 10 years survivorship and preferable functional outcome (20).…”

Section: Introductionmentioning

confidence: 99%

Mobile Bearing Concept in Knee Arthroplasty

Rosenberg¹,

Greental²,

Soudry³

2012

Recent Advances in Hip and Knee Arthroplasty

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Medium term outcome of the LCS cementless posterior cruciate retaining total knee replacements. Follow up and survivorship study of 35 operated knees

Cited by 11 publications

References 16 publications

Influence of loading and activity on the primary stability of cementless tibial trays

Influence of loading and activity on the primary stability of cementless tibial trays

Short term results of low contact stress total knee arthroplasty: Original article

Mobile Bearing Concept in Knee Arthroplasty

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