Do magnetic growing rods have lower complication rates compared with conventional growing rods?

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• 作者：Kar H. Teoh ; MBChB ; MRCS (Ed) ; ^{karhao@gmail.com" class="auth_mail" title="E-mail the corresponding author} ; Daniel M.G. Winson ; MRCS ; Stuart H. James ; BM ; MRCS(Eng) ; FRCS(Orth) ; Alwyn Jones ; MB ChB ; BSC ; MSC ; FRCS ; FRCS (Orth) ; John Howes ; MBBS ; FRCS(Orth) ; Paul R. Davies ; MB BS (Lond) ; FRCS Orth Eng ; Sashin Ahuja ; MS(Orth) ; DNB Orth ; FRCS ; FRCS(Orth) ; MSc Orth Eng
• 关键词：Complications ; Deformity ; Early-onset scoliosis ; Growing rods ; Magnet ; Remote control ; Scoliosis
• 刊名：The Spine Journal
• 出版年：2016
• 出版时间：April 2016
• 年：2016
• 卷：16
• 期：4_supp_S
• 页码：S40-S44
• 全文大小：158 K

文摘

The main advantage cited for the use of the magnetic controlled growing rod (MCGR) system over the conventional growing rod (CGR) in early-onset scoliosis is avoiding repeated invasive surgical procedures for lengthening, thus reducing, complications.

Purpose

The study aimed to evaluate the complications of the MCGR system against the CGR system in our center.

Study Design/Setting

This is a retrospective case control series.

Patient Sample

The sample includes patients with early-onset scoliosis treated with MCGR or CGR.

Outcome Measures

Complications and unplanned return to theater were the outcome measures.

Results

Of the 37 patients (MCGR, N=10; CGR, N=27) in our cohort, 28 patients (76%) had at least one complication. Taking into account the follow-up period, MCGR had a higher complication rate than CGR group (0.32 complication per patient per year vs. 0.15 complication per patient per year). The use of MCGR was associated with a lower risk of deep infection (odds ratio [OR]: 0.22; p=.22) and superficial infection (OR: 0.07, p=.017) but increased risk of metalwork problems (OR: 4.67; p=.045) and unplanned return to theater (OR: 2.92; p=.05) compared with CGR.

Conclusions

Although MCGR has a lower rate of both deep and superficial infections when compared with CGR, it does not completely avoid repeated invasive surgical procedures as previously suggested. It does have a significant increased risk of metalwork problems and unplanned return to theater.