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By Soo-Young Oh

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Read or Download Autologous Bone Plugs Fusion: Treatment for Lumbar Instability: 3E Criteria Technical Operative Notes The Functioning of the Oh's Screw PDF

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Additional resources for Autologous Bone Plugs Fusion: Treatment for Lumbar Instability: 3E Criteria Technical Operative Notes The Functioning of the Oh's Screw

Example text

The disadvantage was because of the long head of the screw, it compressed superficial muscle and produced muscle pain. 4th Period – Shortened Head Part: 1999–2000 The long-head screw was used for 1 year and was inserted in several patients. Most of the patients complained about back muscle pain. The reason for this was the 50 mm long head of the screw, which was located under the fascia layer. From 1999, the long screw was shortened to 25 mm (fig. 57a), now the head of the screw is located in a deep muscle layer (fig.

After the second operation, he was no longer able to work and was receiving a disability pension. With the treatment of Oh’s fusion operation, he feels healthy and is working again full time for an insurance company. He is also president of the action committee for Oh’s fusion. 28 F a E b Fig. 32. a, b X-ray showing mostly extension position. F = Flexion; E = extension. Fig. 33. Functional X-ray in the reclining position shows micro-instability only on layer L4/5. Traumatic Instability The evidence shows instability as a result of discus surgery.

ST = Silicon tube; C = clip; F = fascia. 25 mm 18 mm Fig. 52. Normally deformed. Ideal Screw Position The screw has to have exact and direct contact with the dorsal plugs (fig. 53). It is important that the ventral plug is located in a stable as possible position against the dorsal plug. If the X-ray reveals compact fixation with the screw, it means a situation of stable fusion (fig. 54). Easy Removal of the Temporary Marking Screw With the optimal new developed screw, it is very easy to find the head of the screw by checking with X-rays.

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