Advertisement for orthosearch.org.uk
Results 1 - 3 of 3
Results per page:
Applied filters
Include Proceedings
Dates
Year From

Year To
Orthopaedic Proceedings
Vol. 91-B, Issue SUPP_III | Pages 399 - 399
1 Sep 2009
Pink M Lisý M Pink T Janecek M
Full Access

To evaluate short term results of 126 computer assisted unicompartmental knee arthroplasty (UKA) with ligament balancing.

Between September 2003 and November 2007 we performed 126 computer asssited surgery UKA Preservation. We using kinematic navigation Ci system. This is cemented system with mobile or fixed bearing. Our groups included 72 women and 54 men. Average age at surgery was 71,2 years. The indication for UKA include primary or postraumatic osteoarthritis limited to one compartment, a functional anterior cruciate ligament, no inflamatory disease. In all cases was only medial femorotibial osteoarthritis. Arthroscopic partial medial menisectomy was performed in 25 cases. Approach: medial parapatellar arthrotomy. Clinical evaluation was performed by Hospital for Special Surgery knee scoring system (HSS). Imaging: AP,lateral and stress X-rays.

The average HSS score was 57 point (range, 40–79 points) preoperatively and 94 points (range 62–100 points) postoperatively. 90% patients were classified as excellent or good using the HSS. The average range of motion before surgery: S 0-0-120 gr., 6 days after surgery S 0-0-110 gr. and 3 months after surgery S 0-0-125 gr.

No significant difference in maximum flexion was seen between the preoperative and postoperative values. There were no infection, fracture of tibia plateau, poor pain, or sign of patellar impingement.

UKA together with modern design, reproductible instrumentation and kinematic navigation can eliminate the previous cause of early failures, contralateral tibiofemorial degeneration and tibial loosening. The patient’s selection must be strict regarding (the ideal patient more than sixty years old, low Body Mass Index, low demand of physical activity). Kinematic navigation reduces the possibility of surgeon’s mistake, alignement of the femoral and tibial component, resection level, soft tissue balancing. It increases the accuracy of the comoponent position, especially in the side of the tibia. A continued long term follow-up is necessary to evaluate polyethylene wear after 10 years.


Orthopaedic Proceedings
Vol. 91-B, Issue SUPP_III | Pages 399 - 399
1 Sep 2009
Pink M Lisý M Pink T Janecek M
Full Access

To evaluate first short term results of the 82 Articular Surface Replacements (ASR) of the hip joint with kinematic navigation.

Between March 2006 and March 2007 we performed 82 resurfacings of the hip. In all cases we used Articular Surface Replacement of the Hip joint (ASR-DePuy) with kinematic navigation (Ci system). Our group included 47 women and 35 men. Patients’ mean age at surgery was 68.2 years. The indication for resurfacing was just primary osteoarthritis. Clinical evaluations were conducted using the Harris Hip Scoring system. Imaging studies: AP, axial X-rays.

Patients were followed for an average 12 months postoperative (7–20 months). The average postoperative Harris Hip Total Score was 97%, and 98% of the patients were in the good to excellent range of 80–100 points. No patients were lost to follow-up. We noted a greater range of movement, faster postoperative rehabilitation and shorter time of hospitalization compared with traditional total hip arthroplasty. There were no cases of neurological complication, deep infection, wound dehiscence or dislocation. All X-rays refer correct position of femoral component in both projections. Our experiences with Articular Surface Replacement of the Hip Joint (ASR-DePuy) powered by Ci navigation system are good, but long term followup will be continued.

Articular Surface Replacement of the Hip Joint with modern design, reproductible instrumentation and kinematic navigation can eliminate the previous cause of early resurface failures and loosening. The patient selection must be strict regarding. The kinematic navigation define precise position of the components of ASR. A continued long term follow-up is necessary after minimum 10 years.


Orthopaedic Proceedings
Vol. 86-B, Issue SUPP_III | Pages 359 - 359
1 Mar 2004
Hart R Janecek M Bucek P
Full Access

Aims: The aim of this paper was to evaluate the position of the endoprosthesis after standard and navigated insertion in both sagittal and frontal planes. Methods: From October 2000 to March 2002, 90 Search Evolution TKR were performed in 65 females and 25 males with mean age 68 years because of primary or post-traumatic osteoarthritis. Every third patient received this endoprosthesis without use of navigation. The study sample was so divided into two groups. The þrst group was constituted of 60 patients with TKRs inserted with use of navigation. The second group was formed by 30 patients with TKRs inserted with standard manner. All results were statistically analyzed. Results: The mean lateral tibiofemoral angle was in the 1st group 174,3¡ and in the 2nd group 174,9¡, the mean lateral distal femoral angle was in the 1st group 83,5¡ and in the 2nd group 83,7¡, the mean medial proximal tibial angle was in the 1st group 88,9¡ and in the 2nd group 89,2¡, the mean posterior distal femoral angle was in the 1st group 88,5¡ and in the 2nd group 86,6¡, the mean posterior proximal tibial angle was in the 1st group 88,9¡ and in the 2nd group 88,2¡. The femorotibial axis deviation from 174¡ was greater than 2¡ in the 1st group in 12,3% and in the 2nd group in 27,8% of cases. Conclusions: Kinematic navigation affords a possibility to place both femoral and tibial components more precisely than in implantation with standard manner. The more precise femoral component position in sagittal plane was achieved with navigation in this study.