Effect of Pedicle Lengthening Screw on Biomechanics of Lumbar Spine

Author(s):  
A. Kiapour ◽  
V. K. Goel

Lumbar spinal canal stenosis is a common cause of back and leg pain which occurs as the lumbar spinal canal narrows. The current surgical treatment for many patients with spinal stenosis is surgical decompression and spinal fusion with instrumentation. However there are several drawbacks associated with fusion surgeries including degenerative effect at segments adjacent to the fusion in long run [1,2]. Pedicle lengthening device is a new technology which is designed to be applied for treatment of spinal stenosis and replace the traditional fusion techniques.

2016 ◽  
Vol 2016 ◽  
pp. 1-6 ◽  
Author(s):  
H. Michael Mayer ◽  
Franziska Heider

Objective.Selective, bilateral multisegmental microsurgical decompression of lumbar spinal canal stenosis through separate, alternating cross-over approaches.Indications. Two-segmental and multisegmental degenerative central and lateral lumbar spinal stenosis.Contraindications. None.Surgical Technique.Minimally invasive, muscle, and facet joint-sparing bilateral decompression of the lumbar spinal canal through 2 or more alternating microsurgical cross-over approaches from one side.Results.From December 2010 until December 2015 we operated on 202 patients with 2 or multisegmental stenosis (115 f; 87 m; average age 69.3 yrs, range 51–91 yrs). All patients were suffering from symptoms typical of a degenerative lumbar spinal stenosis. All patients complained about back pain; however the leg symptoms were dominant in all cases. Per decompressed segment, the average OR time was 36 min and the blood loss 45.7 cc. Patients were mobilized 6 hrs postop and hospitalization averaged 5.9 days. A total of 116/202 patients did not need submuscular drainage. 27/202 patients suffered from a complication (13.4%). Dural tears occurred in 3.5%, an epidural hematoma in 5.5%, a deep wound infection in 1.98%, and a temporary radiculopathy postop in 1.5%. Postop follow-up ranged from 12 to 24 months. There was a significant improvement of EQ 5 D, Oswestry Disability Index (ODI), VAS for Back and Leg Pain, and preoperative standing times and walking distances.


2015 ◽  
Vol 28 (4) ◽  
pp. 865-871 ◽  
Author(s):  
Aleksandra Truszczyńska ◽  
Justyna Drzaƚ-Grabiec ◽  
Zbigniew Trzaskoma ◽  
Maciej Rachwaƚ ◽  
Kazimierz Rapaƚa ◽  
...  

Author(s):  
Seiji Takashio ◽  
Masato Nishi ◽  
Yuichiro Tsuruta ◽  
Kenichi Tsujita

Abstract Background Wild-type transthyretin amyloid cardiomyopathy (ATTRwt-CM) is receiving increasing attention due to the availability of novel treatment options. Carpal tunnel syndrome (CTS) and lumbar spinal canal stenosis are known early symptoms of transthyretin (TTR) amyloidosis preceding the cardiac involvement and are considered as ‘Red Flags’ for transthyretin amyloid cardiomyopathy (ATTR-CM). Case summary A 67-year-old man with a history of lumbar spinal canal stenosis for the last 10 years, right rotator cuff tears for the last 4 years, and bilateral CTS for the last 1 year was scheduled for orthopaedic surgery for lumbar spinal canal stenosis. Investigations revealed severe left ventricular hypertrophy and hypertroponinaemia, which were suggestive of cardiac amyloidosis. Cardiac magnetic resonance imaging and 99mTc-labelled pyrophosphate scintigraphy demonstrated positive findings for ATTR-CM. Transthyretin deposition was found in both the myocardium and the yellow ligamentum excised during surgery. There was no transthyretin mutation on genetic testing. The final diagnosis was ATTRwt-CM. Discussion Transthyretin deposition in the ligaments or tendons has been observed in a number of patients with CTS, spinal canal stenosis, and rotator cuff tears. These orthopaedic diseases are predictive for the future occurrence of ATTR-CM. In addition, the coexistence of these multiple diseases might strongly predict ATTR-CM. This knowledge needs to be shared with orthopaedicians and cardiologists for the early diagnosis of ATTR-CM.


1987 ◽  
Vol 35 (3) ◽  
pp. 888-891
Author(s):  
Hirofumi Harada ◽  
Kenji Utsunomiya ◽  
Shougo Masumi ◽  
Nobutaka Kuroya

2006 ◽  
Vol 55 (4) ◽  
pp. 467-470
Author(s):  
Masaki Yoh ◽  
Masayoshi Oga ◽  
Junichi Arima ◽  
Ko Ikuta ◽  
Soichiro Nakano ◽  
...  

1974 ◽  
Vol 23 (3) ◽  
pp. 272-275
Author(s):  
M. Naruo ◽  
H. Takahashi ◽  
T. Higashihara ◽  
T. Sakae ◽  
K. Morimoto ◽  
...  

Sign in / Sign up

Export Citation Format

Share Document