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T. Greggi, F. Vommaro, M. Di Silvestre, A. Cioni, S. Giacomini, F.
Lolli, K. Martikos, E. Maredi
INDICATION FOR SURGICAL TREATMENT OF
SPONDYLOLISTHESIS
Spine Surgery DivisionRizzoli Orthopedic Institute
Bologna, Italy
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Treat the pain that has not responded to farmacolagical/conservative treatment
STOP worsening
ITS’ NOT JUST GROWING PAINS !!!!!
When we have to treat an onthogenetic spondylolistesis In infant/adolescent???
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- CONGENITAL: typical isthmic lysis
- Young people- Degree of vertical sliding and
sacrum obliquity
Meyerding Grading:
Gr I: <25%
Gr II: 25-50%
Gr III: 50-75%
Gr IV: 75-100%
>100% Spondyloptosis
DYSPLASIC SPONDYLOLISTHESIS( Marchetti Bartolozzi)
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Features:L5-S1 is the most affected segmentSacral dome Trapezoidal L5
High probability of worsening (PI increasing)…Delpech Law: the growth of the bone is more in the zone without pressure…
There is not clear correlation between slippage and symptoms
DYSPLASIC SPONDYLOLISTHESIS
(81%)L5-S1
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Vertical Sacrum Flexion of the hips and knees Hyperlordosis
Low back pain meccanical Worsening with activity Improves thanks to the rest
Radicular leg pain Claudicatio spinalis Cauda equina syndrome
CLINICAL PRESENTATION
- X-rays Standard and dynamic
- MRI
- CTisthmic lesion
- EMG
IMAGING
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TREATMENT
CONSERVATIVE
No heavy sports
Farmacological treatment (NSAIDs, cortisone)
Rehabilitation (Strengthening abdominal and
lumbar)
Lumbar Brace
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INDICATIONS FOR SURGERY
§ Up to Grade II
§ Pain: back pain crises become more frequent and more intense, radicular symptoms or cauda equina syndrome
§ Progression (displasyc sacrum, trapezoidal L5, Sex F)
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Surgical indications
Low grade spondylolisthesis
Patients who fail at least 6 months of conservative treatment should be considered for surgery.
Several surgical techniques are reported in literature.
Moller H, Hedlund R. Surgery versus conservative management in adult isthmic spondylolisthesis--a prospective randomized study: part 1. Spine (Phila Pa 1976). 2000 Jul 1;25(13):1711-5.
§Low grade
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Direct pars repair: - option in younger patients- no or minimal spondylolisthesis, no radiculopathy, normal vertebral
disc on MRI.
In situ fusion:- gold standard- controversies still exist about the role of instrumentation and
decompression.
Deguchi M, Rapoff A. Biomechanical comparison of spondylolysis fixation techniques. Spine 1999;24:328-33.
§Low grade
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Decompression alone:- never indicated in young patients- option in elderly patients without signs of instability.
Decompression:- is required if significant radicular symptoms or neurologic deficits are
present.- is associated with an increased rate of pseudoarthrosis and
unsatisfactory clinical results.
Carragee EJ. Single-level posterolateral arthrodesis, with or without posterior decompression, for the treatment of isthmic spondylolisthesis in adults. A prospective, randomized study. J Bone Joint Surg Am. 1997 Aug;79(8):1175-80.
§Low grade
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Instrumentation:- no benefits: Moller (Spine 2000), France (Spine 1999), McGuire
(Spine 1993), Thomsen (Spine 1997)- benefits: Bridwell (J Spinal Disord 1993), Deguchi (J Spinal Disord
1998), Ricciardi (Spine 1995)- no differences between instrumented and non instrumented fusion:
Amundson (Spine 1987)
Fusion extended to L4 (or L3) in case of:- L4-L5 instability- L4-L5 disc degeneration- L5 transvere processes are very small- high grade slip
§Low grade
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Circumferential fusion:- the literature seems to suggest that a circumferential fusion (PLIF,
TLIF, combined approach) is associated with a higher fusion rate and improved clinical otucomes
- however, no clear indications are reported - it should be considered in case of risk of pseudoarthrosis
(decompression, lysthesis reduction with increase in the disc height)
Suk SI, Lee CK. Adding posterior lumbar interbody fusion to pedicle screw fixation and posterolateral fusion after decompression in spondylolytic spondylolisthesis. Spine (Phila Pa 1976). 1997 Jan 15;22(2):210-9; discussion 219-20.
Reduction:- not adequately assessed the benefits in the literature
§Low grade
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A. A., female, 17 yrs. Isthmic spondylolisthesis L4-L5 (Meyerding grade 1) + spondylolysis L3-L4.
Low back pain.
§Low grade
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MRI – CTL3-L4 lysis
No signs of disc degeneration
§Low grade
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Dynamic views: L4-L5 instability
§Low grade
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Reduction followed by PLF + TLIF L4-L5 + L3-L4 pars repair (Scott technique)
§Low grade
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§Low grade
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Surgical indications
High grade spondylolisthesis
Surgery is indicated in young patients even if asymptomatic or with clinical symptoms.
Several surgical techniques are described:
Anterior fusion
Posterolateral in situ fusion
Posterior reduction and posterolateral fusion
Posterior reduction and posterior interbody fusion (PLIF, TLIF)
Posterior reduction and 360° fusion (double approach)
§High grade
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Spondylolisthesis reduction is still controversial in literature
Reduction advantages: - lumbosacral kyphosis correction and sagittal malalignment
improvement- fusion rate improvement (through a conversion of shear forces
in compressive forces)
Reduction disadvantages:- increased risk of neurologic complications (8-30%)
Role of reduction
§High grade
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In 2007 Transfeldt and Mehbod performed a literature review: five comparative retrospective studies were analyzed, non of wich showed any benefit to reduction.
Despite this, several studies have reported good results with reduction of high-grade slips: Bartolozzi (Spine 2003), Shufflebarger (Spine 2005), Ruf (Spine 2006), Fabris (Spine 1996), Smith (Spine 2001).
Role of reduction
Transfeldt EE, Mehbod AA. Evidence-based medicine analysis of isthmic spondylolisthesis treatment including reduction versus fusion in situ for high-grade slips. Spine (Phila Pa 1976). 2007 Sep 1;32(19 Suppl):S126-9.
§High grade
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§ controversial in literature
BENEFITS
LIMITS
§ restoration of lumbosacral kyphosis
§ Best fusion (conversion of shear forces in compression) increased risk of
complications
The reduction may not be necessary when the sagittal alignment is preserved.
THE ROLE OF REDUCTION
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"SPINE Deformity Study Group"Classification system into 6 types based on pelvic parameters for the choice of surgical treatment:
Type 1: PI<45° Low grade Type 2: PI 45°-60° Type 3: PI > 60° SPL L5-S1 Type 4: Balanced Pelvis High grade Type 5: Balanced spine Retroverted Pelvis
•Degree of slipSpino-pelvic alignment
Type 6 Unbalanced spine
Spino-pelvic sagittal balance of spondylolisthesis: a review and classification. Labelle H, Mac-Thiong JM, Roussouly P.Eur Spine J. 2011 Sep;20 Suppl 5:641-6. Epub 2011 Aug 2.
THE ROLE OF REDUCTION
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In conclusion, a reduction procedure is best reserved for patients with lumbosacral kyphotic deformity with loss of global sagittal balance.
If reduction is performed, circumferential fusion (PLIF, TLIF, ALIF) is strongly recommended to prevent slip progression and pseudoarthrosis (particularly in patients with high PI, who have additional shear forces at lumbosacral junction).
A partial reduction can be an option, with reduced risk of neurologic complications, and the achievement of the same goals.
Role of reduction
§High grade
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Unstable zone
If the vertebra adjacent part of the unstable area must be included in the arthrodesis.
... On the LL projection, by a horizontal line that passes through the center of S2, a vertical line from the center of the limiting of L5 and a vertical line passing through the center of the femoral head.
L4 extention
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G. Y., female, 11 yrs. Isthmic spondylolisthesis L5-S1 (Meyerding grade 3).
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Reduction followed by PLF + PLIF L5-S1.
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C. M., female, 11 yrs. Isthmic spondylolisthesis L5-S1 (Meyerding grade 3). Low back pain.
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18 months later
Reduction followed by PLF L5-S1. 18 months later, recurrence of deformity.
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Revision surgery with double approach (PLF L4-S1 + anterior TranS1 L5-S1).
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T. A., female, 14 yrs. High grade isthmic spondylolisthesis. Low back pain.
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PLF L4-S1 (little reduction was achieved) followed byanterior TranS1 L5-S1
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FU 18 months
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S. M., female, 17 yrs. Isthmic spondylolisthesis L5-S1 (Meyerding grade 3/4). Low back pain.
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Reduction followed by PLF + PLIF L5-S1.
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1. Indipendent Scoliosis
SCOLIOSIS AND SPONDYLOLISTESIS (Bergoin)
F 8 yrs/o
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2. Olisthesic Scoliosis§ STRUCTURED Scoliosis and
spondylolisthesis: SIMULTANEOUS TREATMENT
§ Painful Scoliosis unstructured (unilateral sciatica)TREATING SPONDYLOLISTHESIS regress scoliosis
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Low grade isthmic spondylolisthesisYoung patients: reduction and posterior instrumented fusion + interbody fusion (depending on disc height)
High grade isthmic spondylolisthesisReduction and fusion (posterior instrumented fusion + interbody fusion like PLIF ot TLIF)
ALIF (like anterior TRANS1) in case of incomplete or impossible reduction or as salvage surgery
Our Choice
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MATERIAL AND METHODS
Spondylolisthesis treated surgically from 1990 to 2010 477 cases Age <18 years: 77 cases (16%)
30 cases (38%) High grade
SPONDYLOLISTHESIS IN THE ADOLESCENT INFANTE AGE
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14 16
Average age: 16 years (11 to 18)No previous surgery
MeyerdingIII = 16
IV = 8V = 6
L5-S1 = 26/30
L4-L5 = 4/30
02468
10
anni
11 12 13 14 15 16 17 18
MATERIAL AND METHODSSPONDYLOLISTHESIS IN THE ADOLESCENT INFANTE AGE
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SURGICAL INDICATIONS
Lumbar Pain 30/30Lower limb pain 26/30Progression 23/30Sciatica 8 / 30
MATERIAL AND METHODS
§ SPONDYLOLISTHESIS IN THE ADOLESCENT INFANTE AGE
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Anterior interbody fusionPosterolateral arthrodesisPosterior interbody arthrodesisCombined arthrodesisReduction of the slip when it is important
SURGICAL TREATMENT
Neural structuresDecompression
§SPONDYLOLISTHESIS IN THE ADOLESCENT INFANTE AGE
§ Modified Gill’s Technique
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PLF/PLIF + Reduction
SURGICAL TREATMENT
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BENEFITS
Less exposure to tissues
less bleeding
Modern systems
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F. 16 y/o SPL L5-S1
PISS
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SPL L5-S1 Reduction + PLIFFu: 2 yyPI SS
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F. 12 y/o SPL L5-S1 Reduction + PLIF
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2 sacral screw loosening 2 loss of reduction (revision surgery)1 post-op Sciatica (L5, S1)1 wound Infection
Revision Surgery§Interbody screw (Trans1) 2 cases (7%)§Proximal extension to restore sagittal parameters 2 cases (7%)
COMPLICATIONS6 cases (20%)
§SPONDYLOLISTHESIS IN THE ADOLESCENT INFANTE AGE
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M, 13 y/o SPL L5-S1 PLF + Reduction
…SO
Bartolozzi screw L5-S1
§SPONDYLOLISTHESIS IN THE ADOLESCENT INFANTE AGE
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a
% SLIPAGE
RESULTS
Preop. Postop. F.up Correction78.3% 32.4% 33,8% 56.8%
§SPONDYLOLISTHESIS IN THE ADOLESCENT INFANTE AGE
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- Net improvement of the clinical and radiographic aspect
RESULTS
F-Up 3 YRS
§SPONDYLOLISTHESIS IN THE ADOLESCENT INFANTE AGE
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The surgical treatment of spondylolisthesis in adolescence is reduction + PLF/PLIF/TLIF
The reduction is designed to convert shear forces into compression forces restoring spinal-pelvic parameters
Very interesting is the use of Bartolozzi screw
CONSIDERATIONSGold Standard
§ SPONDYLOLISTHESIS IN THE ADOLESCENT INFANTE AGE
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1. clinic2. Worsening of slippage3. Age and PHYSICAL CONSTITUTION
§CONCLUSIONS§Before SURGICAL TREATMENT OF ontogenetic SPONDYLOLISTHESIS we have to keep in mind NUMEROUS FACTORS (Zagra 2008)
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THANKS