Dega osteotomy, workshop

Dega osteotomy, workshop

1. DEGA OSTEOTOMY Thamer Alhussainan , M.D. 9/20/2014 PELVIC OSTEOTOMIES WORKSHOP KKUH 1

2. Dega osteotomy, is an innominate osteotomy that addresses acetabular dysplasia. It can be done in isolation to address acetabular dysplasia or as a part of hip dysplasia surgery. Incomplete osteotomy. 9/20/2014 PELVIC OSTEOTOMIES WORKSHOP KKUH 2

3. First description was published in Polish language by Dega , 1969. The first detailed English description by Grudziak and Ward (JBJS, 2001). 9/20/2014 PELVIC OSTEOTOMIES WORKSHOP KKUH 3

4. Initial description was utilizing bone autografts. Wade et al. (2010), good results with bone allografts. 9/20/2014 PELVIC OSTEOTOMIES WORKSHOP KKUH 4

5. Technique Anterolateral approach. Expose the outer iliac table only till the greater sciatic notch. The osteotomy line is curvilinear with the most cephalic point is at the middle of the acetabulum . 9/20/2014 PELVIC OSTEOTOMIES WORKSHOP KKUH 5

6. Start 1-2 cm proximal to AIIS. Ends 1 cm anterior to greater sciatic notch. The anterior 2/3 of the inner iliac table can be osteotomized. The posterior 1/3 of the inner iliac table must be preserved to maintain the recoil. 9/20/2014 PELVIC OSTEOTOMIES WORKSHOP KKUH 6

7. As the cut involve more medial iliac table, as the anterior converge will improve. As the osteotomy line is more cephalic, as the lateral coverage is more pronounced. 9/20/2014 PELVIC OSTEOTOMIES WORKSHOP KKUH 7

8. The osteotomy is performed with curved osteotomes targeting the inner corner of the tri-radiate cartilage (preserving the TRC). The osteotomy is then reflected according to the acetabular deficiency and the graft is inserted. 9/20/2014 PELVIC OSTEOTOMIES WORKSHOP KKUH 8

9. Grudziak & Walter 9/20/2014 PELVIC OSTEOTOMIES WORKSHOP KKUH 9

10. Grudziak & Walter 9/20/2014 PELVIC OSTEOTOMIES WORKSHOP KKUH 10

11. Grudziak & Walter 9/20/2014 PELVIC OSTEOTOMIES WORKSHOP KKUH 11

12. Grudziak & Walter 9/20/2014 PELVIC OSTEOTOMIES WORKSHOP KKUH 12

13. MASTER TECHNIQUE 9/20/2014 PELVIC OSTEOTOMIES WORKSHOP KKUH 13

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