Press-Fit Condylar Design Total Knee Arthroplasty

Rodricks, David J.; Patil, Shantanu; Pulido, Pamela A.; Colwell, Clifford W.

doi:10.2106/00004623-200701000-00013

Cited by 51 publications

(37 citation statements)

References 20 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…These clinical outcome measures were comparable to the 14-to 17-year followup of PFC 1 TKA reported by Rodricks et al [32], as well as other longterm followups of TKA cohorts (Table 3) [6,8,21,22,25,28,[31][32][33][34]36].…”

Section: Resultssupporting

confidence: 85%

“…Yet, in cases of wellfixed and well-aligned knees, some report polyethylene exchange in the revision knee situation is a reasonable option even in patients with extensive osteolysis [7,23]. Followup studies of 10 to 17 years of TKA using modular tibial trays [21,32,34,36] have shown survivorship of 87% to 92.8% at 12 to 17 years. We previously reported a 100% survivorship at 10 years [20] and 91% at 15 years [29] in patients with a modular tibial tray (no revisions at 10 years and six revisions at 15 years).…”

Section: Years)mentioning

confidence: 99%

See 1 more Smart Citation

Durability of a Cruciate-retaining TKA With Modular Tibial Trays at 20 Years

Callaghan

Beckert

Hennessy

et al. 2013

Clinical Orthopaedics &Amp; Related Research

View full text Add to dashboard Cite

show abstract

Section: Resultssupporting

confidence: 85%

Section: Years)mentioning

confidence: 99%

Durability of a Cruciate-retaining TKA With Modular Tibial Trays at 20 Years

Callaghan

Beckert

Hennessy

et al. 2013

Clinical Orthopaedics &Amp; Related Research

View full text Add to dashboard Cite

show abstract

“…Although 15-year studies on modular TKA were reported [13,27], there are relatively few studies, especially when one considers the frequency with which modular TKA components are used. In addition, as compared with our study, the cohort of Rodricks et al had more limited radiographic followup [27], and that of Dixon et al included hybrid replacements [13]. We obtained clinical followup information for 91% of our living patients (32 patients, 43 knees).…”

Section: Discussionmentioning

confidence: 99%

“…Radiolucent lines were present in 34% and were incomplete and nonprogressive. The range of radiolucent lines has varied in reports of the same implant (13-62%); however, in each of those studies, the lines were incomplete and nonprogressive [13,27]. All studies reported concerns regarding osteolysis [13,27].…”

Section: Discussionmentioning

confidence: 99%

See 1 more Smart Citation

Routine Surveillance of Modular PFC TKA Shows Increasing Failures after 10 Years

Malin

Callaghan

Bozic

et al. 2010

Clinical Orthopaedics &Amp; Related Research

View full text Add to dashboard Cite

Background/rationale A 10-year survivorship of 100% was reported for patients with PFC cruciate-retaining prostheses. Beyond 10 years, we observed additional polyethylene wear likely related to thin liners gammairradiated in air and were concerned this wear might predispose to implant construct failure. Questions/purposes We therefore determined (1) the functional scores at a minimum of 15 years followup, (2) rates of radiographic failure, (3) overall revision rates, and (4) mode of failure after 10 years and the fate of the revised implants. Methods We retrospectively reviewed 75 patients with 101 press-fit condylar posterior cruciate-retaining prostheses. At a minimum followup of 15 years, 35 patients (47 knees) were living and evaluated clinically. No patients were lost to followup. Results There were no revisions during the first 11 years and six reoperations subsequently were performed in five patients (6% overall rate of revision but 12.8% in patients who survived more than 15 years). Three of six revisions had concerning liner wear at 10 years and all six were revised for polyethylene wear. Polyethylene exchange was performed in four of the five patients who underwent revisions, all of whom were doing well at an average of 7.2 years (range, 4.7-9

show abstract

In vivo contact stresses during activities of daily living after knee arthroplasty

D’Lima

Steklov

Fregly

et al. 2008

Journal Orthopaedic Research

Self Cite

View full text Add to dashboard Cite

ABSTRACT:We implanted an electronic knee prosthesis to measure tibial forces in vivo during activities of daily living after total knee arthroplasty. We used tibial forces and knee kinematic data collected in vivo to calculate contact stresses using finite element analysis. The polyethylene insert was modeled as an elastoplastic material, and predicted contact stresses were validated using pressure sensitive sensors. Peak contact stresses generated during walking were similar but about 18% lower than those calculated for International Standards Organization (ISO)-recommended wear simulation conditions. Stair climbing generated higher contact stresses (32 MPa) than walking (26 MPa). However, both high flexion activities (lunge and kneel) generated even higher contact stresses, with the lunge activity generating the highest stresses (56 MPa). The activities that generated high contact stresses also resulted in high equivalent plastic strain. However, the lunge activity generated dramatically higher plastic equivalent strain than the other activities. In vivo measurement of kinematics, forces, and contact stresses may be used to develop more clinically relevant wear simulator protocols. Contact stresses generated during high flexion activities were substantially higher and were largely due to the reduced contact area in deep flexion rather than due to an increase in contact forces. Our results support the use of ''high flexion'' designs that improve contact conditions and preserve contact area at high flexion angles. ß

show abstract

Press-Fit Condylar Design Total Knee Arthroplasty

Cited by 51 publications

References 20 publications

Durability of a Cruciate-retaining TKA With Modular Tibial Trays at 20 Years

Durability of a Cruciate-retaining TKA With Modular Tibial Trays at 20 Years

Routine Surveillance of Modular PFC TKA Shows Increasing Failures after 10 Years

In vivo contact stresses during activities of daily living after knee arthroplasty

Contact Info

Product

Resources

About