A. Mioduszewski (Warszawa, PL)

Ortopedika orthopaedics

Presenter Of 1 Presentation

Poster Osteoarthritis

P166 - Around Knee Osteotomies with 3D Printed Patient Specific Instruments. Osteotomy Precision Assessment in our own Material.

Presentation Topic
Osteoarthritis
Date
13.04.2022
Lecture Time
09:30 - 09:30
Room
Exhibition Foyer
Session Name
7.3 - Poster Viewing / Coffee Break / Exhibition
Session Type
Poster Session
Disclosure
No Significant Commercial Relationship

Abstract

Purpose

High tibial osteotomy is a well-known and widely used procedure with a proven efficiency in treatment and prevention of knee arthritis. For a few years this procedure has been performed using a Patient Specific Instrument (PSI), designed pre-operatively for a specific patient. The aim of this paper is to analyze outcomes of high tibial osteotomies using PSI, regarding accuracy in axis correction.

Methods and Materials

In years 2018- 2021, 30 lower limb corrections by around-knee osteotomy were performed. Mean age in analyzed group was 48,1 years (22-67). Right side: 14, left side: 16. Group consisted of 17 men and 13 women.

In preoperational planning all patients underwent diagnostics concerning full- length weight bearing conventional radiography and a CT scan. Based on the data, in cooperation with biomedical engineer, a mathematical model of the bone was created. An individual patient specific instrument was designed and printed in 3D technology, accurately pointing place and angle of the osteotomy. In the analysis planned and actual correction angles were compared, based on postoperative radiograms. Radiograms were analyzed using Horos software.

Results

Mean correction angle was 7,3 degrees (3-11). The mean difference between actual and planned correction angle was 0,7 degrees (0-2). In one case we noted a complication, where gauge was printed for the other side of the body. In this case we performed the surgery using traditional approach.

Conclusion

Hight tibial osteotomy using Patient Specific Instrument enables accurate operiation planning and precise angle correction. Additional benefit of PSI- assisted osteotomies is shorter time of the procedure, comparing to a traditional approach.

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Presenter Of 1 Presentation

Osteoarthritis

P166 - Around Knee Osteotomies with 3D Printed Patient Specific Instruments. Osteotomy Precision Assessment in our own Material.

Abstract

Purpose

High tibial osteotomy is a well-known and widely used procedure with a proven efficiency in treatment and prevention of knee arthritis. For a few years this procedure has been performed using a Patient Specific Instrument (PSI), designed pre-operatively for a specific patient. The aim of this paper is to analyze outcomes of high tibial osteotomies using PSI, regarding accuracy in axis correction.

Methods and Materials

In years 2018- 2021, 30 lower limb corrections by around-knee osteotomy were performed. Mean age in analyzed group was 48,1 years (22-67). Right side: 14, left side: 16. Group consisted of 17 men and 13 women.

In preoperational planning all patients underwent diagnostics concerning full- length weight bearing conventional radiography and a CT scan. Based on the data, in cooperation with biomedical engineer, a mathematical model of the bone was created. An individual patient specific instrument was designed and printed in 3D technology, accurately pointing place and angle of the osteotomy. In the analysis planned and actual correction angles were compared, based on postoperative radiograms. Radiograms were analyzed using Horos software.

Results

Mean correction angle was 7,3 degrees (3-11). The mean difference between actual and planned correction angle was 0,7 degrees (0-2). In one case we noted a complication, where gauge was printed for the other side of the body. In this case we performed the surgery using traditional approach.

Conclusion

Hight tibial osteotomy using Patient Specific Instrument enables accurate operiation planning and precise angle correction. Additional benefit of PSI- assisted osteotomies is shorter time of the procedure, comparing to a traditional approach.

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