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Fig. 3 | BMC Musculoskeletal Disorders

Fig. 3

From: Surgical treatment of neuromuscular Early Onset Scoliosis with a bilateral posterior one-way rod compared to the Spring Distraction System: study protocol for a limited-efficacy Randomized Controlled Trial (BiPOWR)

Fig. 3

Implant configuration. Representative implant configurations of the SDS (top) and the OWSER (bottom) are shown. Top. A proximal foundation of 3 pedicle screws is placed (blue). The distal foundation consists of iliosacral screws. CoCr rods are placed through open side-to side connectors (green). Around these rods, 2 springs (orange) are positioned, which push against these connectors and a proximal locking buttress. The gliding parts of the rods (red) become shorter as the spine grows. Bottom: Here, the proximal foundation consists of 2 claws (blue), created with hooks. The distal foundation consists of iliosacral screws. The Ti6Al4V OWSER rods are inserted with the dominos placed distally (purple). The notched part of the rods (red) can only lengthen one-way through the domino’s

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BMC Musculoskeletal Disorders

ISSN: 1471-2474

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