COMPARISON OF DYNESYS AND HYBRID SYSTEM FOR MULTI-SEGMENTAL LDD

Zhang, Xin; Xiao, Xiao; Wang, Hongyu; Wang, Song; Yang, Dazhi; Peng, Songlin

doi:10.1590/1413-785220243202e270051

Xin Zhang

significant individual contributions to the development of this manuscript

wrote

reviewed the article

conceptualized the article

The Second Clinical Medical College, Jinan University, Shenzhen, Guangdong, China.

https://orcid.org/0000-0002-1498-8094

Xiao Xiao

significant individual contributions to the development of this manuscript

performed data analysis

Shenzhen People's Hospital, Department of Orthopaedic Surgery, Shenzhen Division of Spine Surgery, Shenzhen, Guangdong, China.

https://orcid.org/0000-0001-8103-1340

Hongyu Wang

significant individual contributions to the development of this manuscript

performed data analysis

Shenzhen People's Hospital, Department of Orthopaedic Surgery, Shenzhen Division of Spine Surgery, Shenzhen, Guangdong, China.

https://orcid.org/0000-0003-4279-8009

Song Wang

significant individual contributions to the development of this manuscript

performed data analysis

The Second Clinical Medical College, Jinan University, Shenzhen, Guangdong, China.

Dazhi Yang

significant individual contributions to the development of this manuscript

performed surgeries

Shenzhen People's Hospital, Department of Orthopaedic Surgery, Shenzhen Division of Spine Surgery, Shenzhen, Guangdong, China.

Shenzhen Key Laboratory of Musculoskeletal Tissue Reconstruction and Function Restoration, Shenzhen, Guangdong, China.

https://orcid.org/0000-0002-6671-8125

Songlin Peng Correspondence: Songlin Peng. 1017, North Dongmen Road, Luohu District, Shenzhen, Guangdong, China. 518020. pengsonglin@mail.sustech.edu.cn

significant individual contributions to the development of this manuscript

performed surgeries

Shenzhen People's Hospital, Department of Orthopaedic Surgery, Shenzhen Division of Spine Surgery, Shenzhen, Guangdong, China.

Shenzhen Key Laboratory of Musculoskeletal Tissue Reconstruction and Function Restoration, Shenzhen, Guangdong, China.

Shenzhen People's Hospital, Shenzhen Clinical Research Centre for Geriatrics, Shenzhen, Guangdong, China.

https://orcid.org/0000-0002-4042-7071

Correspondence: Songlin Peng. 1017, North Dongmen Road, Luohu District, Shenzhen, Guangdong, China. 518020. pengsonglin@mail.sustech.edu.cn

All authors declare no potential conflict of interest related to this article.

	Dynesys group (n=22)	Hybrid group (n=13)	p
Age (years)	48.0 ± 10.0	56.5 ± 15.4	0.053
Gender (male/female)	15/7	9/4	1
BMI (kg/m²)	23.8 ± 2.8	24.7 ± 3.9	0.448
Follow-up time (months)	21.0 ± 7.3	18.0 ± 8.7	0.113
Operating levels (n)			0.541
Two levels	21	11
More than two levels	1	2
Diseases (n)			0.851
Spinal stenosis	1	1
Lumbar disc herniation	5	4
Spinal stenosis combined with lumbar disc herniation	16	8

	Dynesys group (n=22)	Hybrid group (n=13)	^p
Operating duration (min)	192.6 ± 60.0	236.0 ± 55.3	0.012
Blood loss (mL)	174.0 ± 52.6	373.1 ± 164.1	0.001
Drainage volume (mL)	274.5 ± 248.1	357.7 ± 190.7	0.067
Length of hospital stay (days)	17.0 ± 8.1	18.0 ± 5.1	0.229
Post-operation length of hospital stay (days)	12.1 ± 7.1	12.3 ± 3.0	0.448

	Dynesys group	Hybrid group	^p
ODI (%)
Pre-operation	62.5 ± 10.5	62.9 ± 10.7	0.933
Final follow-up	23.5 ± 15.0^* * Significant difference between pre-operation and final follow-up in each group, p < 0.05.	18.1 ± 2.8^* * Significant difference between pre-operation and final follow-up in each group, p < 0.05.	0.775
VAS
Pre-operation	6.8 ± 0.8	7.2 ± 0.9	0.257
Final follow-up	2.0 ± 2.2^* * Significant difference between pre-operation and final follow-up in each group, p < 0.05.	0.7 ± 0.9^* * Significant difference between pre-operation and final follow-up in each group, p < 0.05.	0.015

	Dynesys group	Hybrid group	^p
ROM of operating segments (°)
Pre-operation	9.2 ± 6.1	11.5 ± 9.6	0.428
Final follow-up	6.4 ± 3.4^* * Significant difference between pre-operation and final follow-up in each group, p < 0.05.	4.4 ± 1.7^* * Significant difference between pre-operation and final follow-up in each group, p < 0.05.	0.029
ROM of the upper adjacent segment (°)
Pre-operation	3.7 ± 2.1	3.3 ± 1.9	0.257
Final follow-up	6.4 ± 3.5^* * Significant difference between pre-operation and final follow-up in each group, p < 0.05.	5.4 ± 2.8^* * Significant difference between pre-operation and final follow-up in each group, p < 0.05.	0.169

	Dynesys group	Hybrid group		^p
	Dynesys group	Dynamic segment	Fusion segment	^p
Disc height of stabilized segment (mm)
Pre-operation	11.2 ± 2.0	9.5 ± 1.4	9.9 ± 2.4	0.006
one week after surgery	12.1 ± 3.4	10.2 ± 1.9^† † Significant difference between pre-operation and one-week post-operation in each group, p < 0.05.	11.5 ± 2.1	0.064
Final follow-up	9.9 ± 1.9^* * Significant difference between one-week post-operation and final follow-up in each group, p < 0.05. ^# # Significant difference between pre-operation and final follow-up in each group, p < 0.05.	8.7 ± 1.8^* * Significant difference between one-week post-operation and final follow-up in each group, p < 0.05.	9.7 ± 1.4^* * Significant difference between one-week post-operation and final follow-up in each group, p < 0.05.	0.175
Disc height of the upper adjacent segment (mm)
Pre-operation	11.7 ± 1.9	9.8 ± 1.2		0.001
one week after surgery	12.6 ± 1.1^† † Significant difference between pre-operation and one-week post-operation in each group, p < 0.05.	10.6 ± 1.9^† † Significant difference between pre-operation and one-week post-operation in each group, p < 0.05.		0.002
Final follow-up	11.0 ± 0.9^* * Significant difference between one-week post-operation and final follow-up in each group, p < 0.05. ^# # Significant difference between pre-operation and final follow-up in each group, p < 0.05.	9.4 ± 1.3^* * Significant difference between one-week post-operation and final follow-up in each group, p < 0.05.		0

Preoperative	Final follow-up
	Dynesys group (n)				Hybrid group (n)
	II	III	IV	V	II	III	IV	V
II	–	–	–	–	–	–	–	–
III	–	15	2	–	–	7	2	–
IV	–	–	5	–	–	–	3	–
V	–	–	–	–	–	–	–	1

	Dynesys group (n)	Hybrid group (n)	Total
No degeneration	20	11	31
Degeneration	2	2	4
Total	22	13	35

	SSI (n)	Screw loosening (n)	Radiologic ASD (n)	Symptomatic ASD (n)
Dynesys group	2	1	5	0
Hybrid group	0^* * No significant difference between both groups, p > 0.05.	0^* * No significant difference between both groups, p > 0.05.	3^* * No significant difference between both groups, p > 0.05.	0^* * No significant difference between both groups, p > 0.05.

[1] Correspondence: Songlin Peng. 1017, North Dongmen Road, Luohu District, Shenzhen, Guangdong, China. 518020. pengsonglin@mail.sustech.edu.cn

Brasil

Brasil

COMPARISON OF DYNESYS AND HYBRID SYSTEM FOR MULTI-SEGMENTAL LDD

COMPARAÇÃO ENTRE DYNESYS E SISTEMA HÍBRIDO PARA LDD MULTISSEGMENTAL

ABSTRACT

Objective:

Methods:

Results:

Conclusion: