Complications and associated risk factors at screw removal in slipped capital femoral epiphysis treated by cannulated stainless steel screws

Juan Pretell-Mazzini, Victor Rodriguez-Vega, Jorge Muñoz-Ledesma, Eva María Andrés-Esteban, Rafael Marti-Ciruelos, José Luis González-López, Angel Curto- De la Mano

Research output: Contribution to journalArticlepeer-review

3 Scopus citations


Purpose: The aim of our study is to report our complication rate and analyze the associated risk factors when removing cannulated stainless steel screws for SCFE fixation. Methods: This was a multicenter retrospective study of patients who underwent removal of cannulated stainless steel screws after a mean time of 2.03 years of implantation. Thirty-two patients were included (38 hips) with a mean of 13.7 years of age during screw removal surgery. The mean post-removal follow up time was 1.6 years. In all cases the removal of screws was done systematically. Demographic data, possible risk factors related to removal failure, as well as post-removal complications such as post-removal fractures, infections and scar issues were recorded. Results: A removal failure rate of 15.79 % (6/38) was found. The removal surgical time was longer than the initial fixation time but without statistical significance (70.78 vs 61.84 m, p = 0.196). However, the duration of screw implantation (r 2: 7.09; IC: 1.12-13.06) and screw head bony coverage (r 2: 21.32; IC: 5.58-37.06) were both related to this prolonged time. Multivariant analysis revealed that a fully threaded cannulated screw had the lowest removal failure risk (OR: 0. 3; IC: 0.14-0.61). There were no postremoval complications recorded. Conclusions: We recommend to use full threaded cannulated stainless steel screws and to perform the procedure as soon as the physis are closed to decrease the surgical time. It is a safe procedure based on a low rate of complications such as post-removal fractures, infection and scar issues.

Original languageEnglish (US)
Pages (from-to)285-289
Number of pages5
JournalJournal of Children's Orthopaedics
Issue number4
StatePublished - Aug 2012
Externally publishedYes


  • Full threaded screws
  • Removal failure rate
  • Slipped capital femoral epiphysis
  • Stainless steel screws
  • Titanium screws

ASJC Scopus subject areas

  • Pediatrics, Perinatology, and Child Health
  • Orthopedics and Sports Medicine


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