J Korean Orthop Assoc.  2008 Apr;43(2):152-159. 10.4055/jkoa.2008.43.2.152.

Clinical Efficacy of a Stand-Alone, Threaded-Titanium Fusion Cage for Single-Level Degenerative Lumbar Spinal Disorders

Affiliations
  • 1Department of Orthopedic Surgery, College of Medicine, Research Institute of Clinical Medicine,Chonbuk National University Hospital, Korea. kysong@chonbuk.ac.kr
  • 2Department of Orthopedic Surgery, Gwangju Veterans Hospita, Korea.
  • 3Department of Orthopedic Surgery, Jeju National University Hospital, Korea.

Abstract

PURPOSE: To evaluate the clinical and radiologic efficacy of posterior lumbar interbody fusion (PLIF) using a threaded fusion cage (TFC) alone with autogenous iliac corticocancellous bone graft for single-level degenerative lumbar spinal disorders.
MATERIALS AND METHODS
Thirty-eight consecutive patients receiving PLIF with TFC alone were evaluated with at least three years of follow-up. Clinical outcome and satisfaction were assessed using Ragab's measurements. Radiological outcomes were analyzed in terms of lumbar lordosis, segmental lordosis, disc height, and fusion rates.
RESULTS
Disc height was 6.18+/-2.54 mm, 11.71+/-1.60 mm and 9.94+/-1.94 mm on average for preoperative, postoperative, and final follow-up, respectively. Lumbar lordosis was 27.46+/-11.47degrees, 31.41+/-8.89degrees on average for preoperative and at final follow-up, respectively. Segmental lordosis was 11.51+/-9.35degrees preoperatively, and 10.86+/-7.49degrees at final follow-up. Satisfactory clinical outcome were obtained in 89.2% of patients with successful bone fusion in 73.0% of patients.
CONCLUSION
Stand alone TFC is an effective treatment modality in maintenance of disc height and lumbar lordosis, with satisfactory long term clinical outcomes in the treatment of single-level degenerative lumbar spinal disorders.

Keyword

Degenerative lumbar spinal disorders; Posterior lumbar interbody fusion; Threaded fusion cage (TFC)

MeSH Terms

Animals
Follow-Up Studies
Humans
Lordosis
Transplants

Figure

  • Fig. 1 Radiologic measurement of disc height (repeated measured ANOVA test. p=0.05).

  • Fig. 2 Radiologic measurements of segmental lordosis and lumbar lordosis (repeated measured ANOVA test. p=0.68, p=0.53).

  • Fig. 3 Clinical outcome according to the preoperative diagnosis.

  • Fig. 4 A fifty seven year-old male was admitted with back pain and left sciatica. (A) Plain lateral radiograph showing a degenerative change in the L5-S1 lumbar disc space. (B) Postoperative lateral radiographs shows PLIF on L5-S1 with TFC only. (C) Lateral radiographs after 6 months shows absence of halo formation and sclerosis of adjacent bone. (D) Lateral radiographs after 4 years shows ligamentous ossification, and cages have become fully imbedded inside the two united vertebrae.


Cited by  3 articles

Lumbar Lordosis Restoration with an Eight Degree Cage in Posterior Lumbar Interbody Fusion for Lumbar Degenerative Disease
Young-Tae Kim, Kyu-Jung Cho, Ju-Yong Park, Jong-Hyuk Yang
J Korean Orthop Assoc. 2014;49(3):177-184.    doi: 10.4055/jkoa.2014.49.3.177.

Restoration of Lumbar Lordosis After Posterior Lumbar Interbody Fusion with 4 Degree Cage in Degenerative Spinal Disease
Kyu-Jung Cho, Young-Tae Kim, Seung-Rim Park, Seung-Hyun Hong
J Korean Soc Spine Surg. 2013;20(2):51-57.    doi: 10.4184/jkss.2013.20.2.51.

Restoration of Segmental Lordosis and Related Factors in Interbody Fusion for Degenerative Lumbar Disease
Eung-Ha Kim, Jung-Moo Seo, Joong-Hyeon Ahn
J Korean Soc Spine Surg. 2015;22(4):170-177.    doi: 10.4184/jkss.2015.22.4.170.


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