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SR - 20 Pages

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Catalogue excerpts

Implants trauma Sacral Rods

 Open the catalogue to page 1

1. Introduction P. 5 Preface P. 6 Properties P. 7 Indications & Contraindications 2. Surgical Technique P. 8 Ventral stabilization P. 8 Dorsal stabilization P. 9 Preparation P. 9 Reduction P. 9 Guiding instrument P. 10 Surgical Technique P. 11 Wedge shaped washers P. 12 Surgical Technique P. 12 Check P. 13 Postoperative treatment P. 13 Explantation 3. Information P. 15 Dotize® P. 16 Order list P. 18 Reconditioning Manual

 Open the catalogue to page 3

Preface The operative management of pelvic ring disruptions has always represented a challenge to the treating surgeon. The sufficient stabilisation of such an injury requires both a profound knowledge of the anatomy and biomechanics of the pelvis and an understanding of the mechanism of fracture. The chosen technique of a posterior stabilisation depends on the one hand on the kind of fracture, and on the other hand on the personal experience of the individual operator. Threaded rods as fixators of posterior pelvic ring instability have been well known and well proven for a long time, especially...

 Open the catalogue to page 5

♦ Easier removal of the implant after the ♦ Improved fatigue strength of the ♦ Reduced risk of inflammation and ♦ Threaded rods with washers and locknuts for ilio-iliac compression ♦ Simple and safe operative technique ♦ Low possibility of iatrogenic injury to neural structures ♦ Stepped thread to increase fatigue ♦ Socket spanner system with AO standard adapter for fast and simple Guiding instrument: threaded rods

 Open the catalogue to page 6

Indications & Contraindications Indications: • Dorsal stabilization on the posterior pelvic ring for unstable pelvic ring injuries type C/AO Especially in the case of: • Unstable sacral fractures in all three zones • Osteo-ligament instabilities of the sacro-iliac joint Contraindications: • Fractures of the ala of the ilium in the posterior area • Fractures of the Os sacrum in the transforaminal area with CT-verified fractured parts and fragments requiring an open revision and decompression • For the case that the relevant anatomy appears to preclude a safe positioning of the rods behind the sacral...

 Open the catalogue to page 7

Ventral stabilization As a rule, a ventral stabilisation is carried out as the first intervention since a secondary reposition of the anterior pelvic ring in the case of an already reduced dorsal fracture could lead to an uncontrolled compression of the plexus sacralis. Dorsal stabilization Dorsal stabilisation is carried out in the prone position of the patient, usually under full anaesthesia and in the same session. A curved skin incision is made on both sides lateral to the sacro-iliac joint, from the spina iliaca posterior superior extending cranially with a length of about 5cm. Linea glutea...

 Open the catalogue to page 8

Preparation • Preparation of the subcutaneous fat tissue and carried down to the fascia of the glutaeus maximus muscle. • Loosen the musculature from the outer surface of the dorsal os ileum. Spina iliaca post. superior Linea glutea posterior Reduction • A possibly necessary reposition of half of the pelvis is carried out by means of a Schanz screw attached to the crista iliaca. • Deployment of the guiding instrument and checking by means of fluoroscopy. Guiding instrument It is strongly advised not to use the enclosed guiding device for reducing bone fragments since it could be damaged in this...

 Open the catalogue to page 9

Surgical Technique • The linea glutea posterior acts as the reference point. • The guiding instrument is positioned on a considered line between the origin of the linea glutaea posterior on the iliac crest and the spina iliaca inferior; the drill hole will then lie some 0.5cm higher. • The caudal screw is attached first, and the point of entry is to be chosen such that the rod is at a tangent to the crista centralis of the os sacrum or even perforates it, but at least comes to rest behind the lamina dorsalis of the sacrum. • The guiding instrument can be swivelled in the caudal direction during...

 Open the catalogue to page 10

• The asymmetric washer, nut and locknut are attached (this is done the most simply by continuing to turn the rod with the drill). • Both nuts must be definitively tightened. • The drill chuck is released, the guiding instrument removed, and the washer is attached as are, successively, both nuts on the second side using the special socket spanner and the soft-part protector. Wedge shaped washers Please note the exact anatomical position shown here to arrive at the best result.

 Open the catalogue to page 11

Surgical Technique The first nut is tightened until the desired compression of the fracture area is reached (care must be taken not to use excessive compression with transforaminal fractures of the sacrum.) Both nuts must be tightened. Remove the excess end using the bolt cutters. The same procedure is undertaken with the second screw, which is to be positioned some 2cm cranially to the first screw. Socket spanner with soft tissue protection Adapter for socket spanner Check • Final check using fluoroscopy or X-ray • Redon drainage • Subsequent closure of the wound

 Open the catalogue to page 12

Postoperative treatment Depending on type of fracture: • In the case of instabilities of the SI joint and transalar fractures, we recommend a partial stress of the injured side for six weeks, then moving on to full stress. • In the case of transforaminal and central fractures, we recommend the injured side not be subject to stress for six weeks, then six weeks partial stress, moving on to full stress after CT check after the 12th week at the earliest. Explantation The materials should be removed since two joints are bridged over. Removal of the implants is carried out as a rule after one year...

 Open the catalogue to page 13

Dotize® Chemical process - anodization in a strong alkaline solution* Dotize Type II anodization • Layer thickness 2000-10 000nm + Film becomes an interstitial part of the titanium + Different colors - Implant surface remains sensitive to: Chipping Peeling Discoloration - No visible cosmetic effect Anodization Type II leads to following benefits* • • • • • • • • Oxygen and silicon absorbing conversion layer Decrease in protein adsorption Closing of micro pores and micro cracks Reduced risk of inflammation and allergy Hardened titanium surface Reduced tendency of cold welding of titanium implants...

 Open the catalogue to page 15

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