Abstract
PurposeTo evaluate the clinical and radiological results of patients that underwent total knee arthroplasty (TKA) with a NexGen LPS-Flex implant using a Navigation system (Brain Lab).Materials and MethodsBetween January 2001 and December 2005, 55 knees in 46 patients which used the NexGen LPS-Flex implant with a Navigation system (Brain Lab) for primary TKA were clinically and radiologically evaluated after a minimum follow-up of 5 years. Evaluation included preoperative and postoperative range of motion (ROM), Knee Society Score (KSS), tibio-femoral angle and postoperative complications.ResultsKnee ROM was increased from 118.9° preoperatively to 126.9° at the last follow up. In addition, the preoperative flexion contracture improved from 6.5° to 1.8° postoperatively. The mean KSS and functional score were improved from 59.8 and 51.2 to postoperative scores of 86.4 and 85.2 respectively. The rate of appearance of radiolucency in X-ray was 21.8%. One case of superficial skin infection and one case of aseptic loosening were noted as complications but, did not require a revision surgery.ConclusionsTKA with NexGen LPS-Flex implant using Navigation system (Brain Lab) showed satisfactory improvement in pain and function, but more long term follow up will be needed to complete verification.
Highlights
Introduction advancement in total knee arthroplasty (TKA)Factors that determine the success of TKA include proper patient selection, implant design, precise surgicalTotal knee arthroplasty (TKA) has been performed for the technique, and pre-and postoperative patient management
A statistically significant improvement was found in the mean Knee Society Score (KSS) from 59.8 points preoperatively to 86.3 at the last followup (p
A PS type prosthesis was used in 35 knees where severe flexion contracture or varus/valgus deformity was present, normal knee function appeared unattainable with the use of a cruciate retaining type (CR type) prosthesis due to severe posterior cruciate ligament (PCL) injury, or severe asymmetrical extension-flexion gap was observed
Summary
Factors that determine the success of TKA include proper patient selection, implant design, precise surgical. Total knee arthroplasty (TKA) has been performed for the technique, and pre-and postoperative patient management. With improvements in surgical are dependent on proper implant location and precise lower limb techniques and implant designs, there has been much recent alignment[1,2]). Bathis et al.3) reported that the use of navigation in TKA can be effective in improving the accuracy of the lower limb alignment and implant placement, whereas Jenny and Boeri4) reported that the navigation assistance was not necessarily related to the improved accuracy. The NexGen (Zimmer Inc., Warsaw, IN, USA) knee implants were designed in mid 1990s and have been evolved to enable hyperflexion. The NexGen LPS-Flex knee implants allow for combination of various implants and greater conformity of
Sign-in/Register to view highlights & summary Sign-in/Register to access full text options 
Free) 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
