Knee Replacement Arthroplasty (Subscribe)  

by D.W. LENNOX, L.H. RILEY Jr, D.S. HUNGERFORD, M.A. JACOBS, Th. JUDET and K.A. KRACKOW In: Atlas of Orthopaedic Surgery Volume 3 1991
Procedures covered include Synovectomy of the knee, Total Knee Replacement (TKR), Revision Knee Arthroplasty, Distraction Arthroplasty, Arthrodesis of the knee,

Presentation by D Hungerford

Questions/purposes We determined the rerevision rate due to infection after two-stage reimplantation performed for failed irrigation and débridement of infected TKA.
Conclusions The failure rate in this series of two-stage revisions for periprosthetic knee infection in patients treated with previous irrigation and débridement is considerably higher than previously reported...

Questions/purposes The purposes of the current study were to (1) determine revenue, expenses, and profitability (loss) for TKA for all patients and for different payors; (2) define changes in utilization and unit costs associated with this operation; and (3) describe TKA cost control strategies to provide insight for hospitals...

"How & Why I Resurface the Patella in Primary TKA" by Dr. Doug Dennis

Questions/purposes We developed and validated a technique to quantify polyethylene wear in tibial inserts using microcomputed tomography (micro-CT), a nondestructive high-resolution imaging technique that provides detailed images of surface geometry in addition to volumetric measurements.
Conclusions Micro-CT can provide precise and accurate volumetric measurements in addition to quantifiable three-dimensional...

Questions/purposes We determined whether different ethnic and gender groups residing in the United States had different knee translations and rotations.
Conclusion We identified small differences in maximum flexion between genders and ethnic groups. While no differences were identified in the lateral condyle translation, the medial condyle remained more stationary...

Abstract Yong et al Annals of Rheumatic Diseases 2004

The Knee Society rating system was first promulgated during the late 1980's and has become the standard clinical evaluation system for reporting results for patients undergoing Total Knee Replacement. Most major journals strongly encourage that total knee manuscripts include Knee Society rating scores as part of the result section. This site...

A review of infections following TKR treated at two joint replacement centers identified 29 cases of resistant knee sepsis treated with a long intramedullary fusion nail. Clinical outcome and radiographs were reviewed at an average follow-up of 48 months
Intramedullary arthrodesis is a viable treatment for refractory infection after TKR. Patients...

We asked whether the medially conforming ball-and-socket design differences would be associated with (1) improved ROM; and (2) improved scores compared to a conventional, fixed-bearing posterior-stabilized TKA.
Conclusions Both implant designs similarly relieved pain and improved function. The medially conforming ball-and-socket articulation provided better high-end function as reflected by the...

Over the past 30 years, the increasing success of total knee arthroplasty has gradually replaced arthrodesis as the procedure of choice in most conditions causing severe joint destruction. Instead of a primary procedure, arthrodesis is now considered a salvage procedure relegated to cases where total knee replacement may he contraindicated,...

Case presentation
A 70-year-old woman was referred to our hospital because of right knee dislocation after TKA was performed on her right knee due to severe varus deformity and flexion contracture. This instability was caused by persistent MCL tightness and iatrogenic lateral collateral, arcuate ligament, and popliteus tendon injury.
The torn lateral...

Benefits to balancing the ligaments: optimize the results, recognize potential errors in bone resection and soft tissue problems intraoperative. It is essential to balance the ligaments if one is to use a mobile bearing type of knee.
James R. MacKenzie, BSc M.D, F.R.C.S.(C)

he primary objectives of total knee arthroplasty are to reduce pain, maximize range of motion (ROM), and provide stability through the gait cycle. Pain relief depends on proper ligamentous balancing and solid implantation. Solid implantation is typically assured through cementation, whereas soft-tissue balancing is vital to ensure maximum ROM and...