Transforaminal lumbar interbody fusion (TLIF) surgery: A finite element analysis of open and minimally invasive approach on L4-L5 segmentBackground To compare the effect of minimally invasive and open transforaminal lumbar interbody fusion (TLIF) approaches in fusing the L4-L5 segment and predicting ...
METHODS: Thirty patients with a mean age of 43 years (range, 26-63) who suffered from instability of levels L4-L5 (n = 23), L5-S1 (n = 3), or both (n = 2) underwent surgery. Spondylodesis was achieved with two BAK cylinders. After 6 months, all patients completed a ...
with radiologically excessive segmental motion showing a translational motion of 3 mm or more, flexion angulation of -5 degrees or less, and a slip angle of -5 degrees or less at the site of spondylolisthesis (L4--L5), the kyphotic slip angle (L4--L5) tended to increase after surgery. ...
Accordingly, the less correction in L4 and L5 tilt would induce the immediate CM happening after correction surgery. Interestingly, the L4 and L5 tilt and their corrections perioperatively were not the risk factors for CM-developing during follow-up after multivariate analyzing. Buell et al. [16...
An ALIF is done in the lumbar, or lower, spine. Most commonly it is performed on the L4 through L5 or L5 through S1 segment at the bottom of the lumbar spine, as these segments are most likely to break down. A...
BMC Surgery (2022) 22:284 https://doi.org/10.1186/s12893-022-01733-6 RESEARCH Open Access Predictors of accurate intrapedicular screw placement in single‑level lumbar (L4‑5) fusion: robot‑assisted pedicle screw, traditional pedicle screw, and cortical bone trajectory screw ...
Recent interest in laparoscopic spine surgery using threaded cages has resulted in questions regarding the ability to safely access the L4-L5 disc using this approach. The laparoscopic transperitoneal approach to L5-S1 is below the bifurcation of the great vessels, thus requiring minimal mobilization ...
Eight patients exhibited fusion at the L3-L4 level and 34 patients, at the L4-L5 level. The fusion status was assessed using plain radiographs. The clinical outcomes were evaluated using the Japanese Orthopedic Association (JOA) scores. Non-union was noted in 26 % (11/42) of the patients....
Three of the 5 patients, aged 34, 27 and 32 years at time of surgery, reported spontaneous recovery at 14, 16 and 16 months after surgery, respectively. Those without recovery were 42 and 56 years. No patient with L4-L5 fusion experienced the dysfunction. Relatively elder patients who ...
(L4/5) and L5/6 of male Lewis rats. Spine stiffening was monitored at 4, 8 and 12 weeks using noninvasive-induced angular displacement (NIAD) testing. At 12 weeks isolated spines were assessed for fusion and bone formation by palpation, biomechanical testing [four-point bending stiffness, ...