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Complete Knee Solution Legacy® Knee Constrained Condylar Knee

Patent US9579209 - Constrained knee prosthesis - …

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Pre Op Predictors for Constrained Design | Knee | Prosthesis

Methods We evaluated 11 patients in which we used the constrained implant hinge associated to rotating tibial basis, with minimum follow-up of two years. Gunston introduces first cemented surface arthroplasty of knee joint. minimally constrained prosthesis that depends on an intact PCL to provide stability in. Non-constrained total knee prosthesis. The femoral and tibial components are independent of each other. A groove is present in the posterior aspect of the tibial.

Constrained condylar knee (CCK) implants are commonly used in a revision setting

A meniscal component forming the rotating bearing of the knee prosthesis is packaged together with the hinge post extension so that the appropriate hinge post extension is readily available.

Patent US4224697 - Constrained prosthetic knee - …

54.1 Limited constrained condylar knee prosthesis, LCCK (Zimmer®, Warsawa, IL USA) Fig

The study was a retrospective analysis of clinical and radiographic outcomes in a series of revision total knee arthroplasties performed with a constrained condylar knee prosthesis and press-fit modular stems. We hypothesized that the clinical and radiographic outcome of surface cementation would be inferior to that of metaphyseal cementation. Fifty-two consecutive revision cases were followed for a median of 8.2 years (range, 6 to 10 years).

The increasing number of patients undergoing primary total knee arthroplasty (TKA) has been accompanied by an increase in the number of revision knee arthroplasty procedures, with an estimated cost of €50,000-70,000 per procedure [,]. The goal of revision knee arthroplasty is to restore the anatomy and function of the joint. However, bone loss and soft tissue instability are substantial obstacles to obtaining adequate joint line restoration [] and ligament balancing, which are crucial when deciding on a suitable choice of implant. The constrained condylar knee (CCK) prosthesis was developed to resist coronal plane stresses arising from soft-tissue instability.

Ευρεσιτεχνίες US6719800 - Constrained prosthetic knee …

A constrained prosthetic knee having a modular hinge post and a rotating bearing

Constrained prostheses are used in unstable knees due to their ability to resist varus and valgus transformative forces across the knee. Aseptic Loosening of implants is caused by osteolysis. It is most significant factor limiting longevity of THA. Revision for loosening is 4x higher than next leading.

The increasing number of revision knee arthroplasty result in the more frequently use of a constraint implant but results from previous reports are difficult to interpret. The purpose of this study was to compare the long-term outcomes of superficial cemented versus metaphyseal cemented in revision total knee arthroplasty with a condylar constrained arthroplasty.

Constrained prosthetic knee with rotating bearing - …
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  • Sheehan's semi-constrained knee prosthesis.

    09/01/2003 · Abstract: A constrained prosthetic knee having a modular hinge post and a rotating bearing

  • THE NOILES HINGE KNEE PROSTHESIS WITH AXIAL …

    Constrained prosthesis knee

  • TKA Prosthesis Design - Recon - Orthobullets

    Arthrosis of the knee (gonarthrosis) and joint replacement

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TKA Instability - Recon - Orthobullets

Between January 2004 and December 2007, 91 consecutive revision total knee arthroplasties were performed in 88 patients by 2 senior authors (MVM and JVM) in a single institution using the same system. Twenty-three procedures were excluded because a posterior stabilized liner was used with a CCK prosthesis, and 15 were excluded because the revision was performed using a rotating hinge knee prosthesis (NexGen® RH Knee, Zimmer, Warsaw, Indiana, USA) (Figure ). The implant chosen in all cases was the Legacy Constrained Condylar Knee prosthesis (LCCK; Zimmer, Warsaw, Indiana, USA). In the remaining 53 procedures, the indication for using this prosthesis was an absent posterior cruciate ligament and a deficient medial or lateral collateral ligament but a competent extensor mechanism. According to the Anderson Orthopaedic Research Institute [] bone defect classification, there were 19 type 1 femoral defects, 32 type 2 defects, and 2 type 3 defects. As for tibial defects, 29 were type 1, 20 were type 2, and 4 were type 3. Both aseptic and septic cases were included.

Reverse Shoulder Prosthesis (RSP) | DJO Global

A cannulated hinge post is rotatably connected to the femoral component of the knee prosthesis so that a hinge post extension may be anteriorly positioned through the hinge post and into the tibial component of the knee prosthesis, after positioning of the femoral component in the femur and the tibial component in the tibia.

Knee Replacement Implant Types, Revision Surgery & …

There were 11 complications. Intraoperative complications included 3 partial avulsions and 1 total avulsion of the patellar tendon that were treated successfully by anchor fixation and 1 condylar fracture that was fixed with screws. Postoperative complications included 2 infections, 2 periprosthetic fractures treated with plate synthesis, 1 pulmonary embolism, and 1 postoperative hematoma requiring surgical drainage (Table ). Three revisions were necessary. Two were because of infection (1 reinfection and 1 new infection): one was treated with 2-stage revision and the other with arthrodesis with a cemented nail due to massive bone loss. The third revision involved a case of severe mediolateral instability that was treated with revision of a rotating hinge knee prosthesis (NexGen®, Zimmer, Warsaw, Indiana, USA) at 15 months after surgery. The follow-up was 8.2 years (6 to 10).

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