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Three-Dimensional Preoperative Virtual Planning in Derotational Proximal Femoral Osteotomy
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Bilateral Anterior Innominate Osteotomy for Bladder Exstrophy.

Derek T Nhan1, Paul D Sponseller1

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An anterior iliac osteotomy is an effective surgical method for bladder exstrophy closure. This technique improves pelvic alignment, aids in achieving continence, and enhances gait in affected patients.

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Area of Science:

  • Pediatric Surgery
  • Orthopedic Surgery
  • Urology

Background:

  • Bladder exstrophy is a congenital condition causing genitourinary and musculoskeletal abnormalities.
  • Osseous morphologic changes include pelvic and iliac wing external rotation and acetabular retroversion.
  • Previous osteotomy techniques have had limitations in restoring pelvic osseous relations.

Purpose of the Study:

  • To describe the anterior iliac osteotomy technique for bladder exstrophy closure.
  • To highlight the advantages of the anterior approach over conventional posterior methods.
  • To demonstrate its efficacy in improving continence and gait.

Main Methods:

  • Preoperative planning, patient positioning, and surgical incision.
  • Subperiosteal dissection of the iliac wing and anterior osteotomy.
  • External fixator placement and anterior internal fixation for pubic symphysis closure.

Main Results:

  • The anterior approach facilitates better approximation and mobility of pubic rami.
  • It prevents vertical migration of the hemipelvis and allows direct visualization for external fixator placement.
  • This technique promotes continence by restoring the pelvic floor musculature.

Conclusions:

  • Anterior iliac osteotomy is an effective method for pelvic ring closure in bladder exstrophy.
  • It offers advantages over posterior approaches, including improved surgical efficiency and outcomes.
  • The procedure aids in correcting rotational anomalies and improving functional results like continence and gait.