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Is Immobilization Technique Associated With Postoperative Pubic Rami Diastasis Following Bladder Exstrophy Closure?

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Spica cast immobilization for bladder exstrophy repair led to better pubic rami diastasis reduction than Bryant traction. Spica casts also resulted in shorter hospital stays and fewer skin complications.

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Area of Science:

  • Pediatric Urology
  • Orthopedic Surgery
  • Reconstructive Surgery

Background:

  • Pelvic osteotomies are crucial for relieving tension during bladder exstrophy repair.
  • Various postoperative immobilization techniques exist for the pelvis and lower extremities.
  • Comparing immobilization methods is essential for optimizing patient outcomes.

Purpose of the Study:

  • To compare short and long-term pubic rami diastasis changes between Bryant traction and spica cast immobilization after pelvic osteotomy for bladder exstrophy.
  • To evaluate differences in length of stay, skin complications, and urologic outcomes between the two immobilization methods.

Main Methods:

  • Retrospective review of pediatric bladder exstrophy patients (<18 months) undergoing posterior pelvic osteotomy and closure.
  • Comparison of pubic rami diastasis at ≤6 months (short-term) and ≥12 months (long-term) post-operation.
  • Analysis of length of stay, pressure ulcers, skin rashes, fistulas, and dehiscence rates; multivariable logistic regression used.

Main Results:

  • Spica cast immobilization showed greater short-term (P=0.002) and long-term (P=0.05) reduction in pubic diastasis compared to Bryant traction.
  • Adjusted analysis indicated higher odds of greater diastasis reduction with spica casts (short-term OR: 2.71, long-term OR: 2.41).
  • Bryant traction group had significantly longer hospital stays (26 vs 19 days, P<0.001) and higher rates of pressure ulcers (26.7% vs 0%, P=0.005).

Conclusions:

  • Spica cast immobilization is a safe and effective method for patients with bladder exstrophy.
  • Spica casts offer superior reduction in pubic diastasis compared to Bryant traction, both short and long-term.
  • Spica cast use is associated with reduced hospitalization duration and fewer pressure-related skin complications.