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17.09.2017 | Original Article - Functional | Ausgabe 12/2017

Acta Neurochirurgica 12/2017

Comparison of efficacy between dorsal root entry zone lesioning and selective dorsal rhizotomy for spasticity of cerebral origin

Zeitschrift:
Acta Neurochirurgica > Ausgabe 12/2017
Autoren:
Bunpot Sitthinamsuwan, Luckchai Phonwijit, Inthira Khampalikit, Akkapong Nitising, Sarun Nunta-aree, Sirilak Suksompong

Abstract

Background

Severe spasticity adversely affects patient functional status and caregiving. No previous study has compared efficacy between dorsal root entry zone lesioning (DREZL) and selective dorsal rhizotomy (SDR) for reduction of spasticity. This study aimed to investigate the efficacy of DREZL and SDR for attenuating spasticity, and to compare efficacy between these two methods.

Methods

All patients who underwent DREZL, SDR, or both for treatment of intractable spasticity caused by cerebral pathology at Siriraj Hospital during 2009 to 2016 were recruited. Severity of spasticity was assessed using Modified Ashworth Scale (MAS) and Adductor Tone Rating Scale (ATRS). Ambulatory status was also evaluated.

Results

Fifteen patients (13 males) with a mean age of 30.3 ± 17.5 years were included. Eight, six, and one patient underwent DREZL, SDR, and combined cervical DREZL and lumbosacral SDR, respectively. Eight of ten patients with preoperative bed-bound status had postoperative improvement in ambulatory status. Spasticity was significantly reduced in the DREZL group (p < 0.001), the SDR group (p < 0.001), and in overall analysis (p < 0.001). SDR was effective in both pediatric and adult spasticity patients. A significantly greater reduction in spasticity as assessed by MAS score (p < 0.001) and ATRS score (p = 0.015) was found in the DREZL group. Transient lower limb weakness was found in a patient who underwent SDR.

Conclusions

DREZL is more effective for reducing spasticity, but is more destructive than SDR. DREZL should be preferred for bed-ridden patients, and SDR for ambulatory patients. Both operations are helpful for improving ambulatory status. Gait improvement was observed only in patients who underwent SDR. Adult patients with spasticity of cerebral origin benefit from SDR.

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