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Lumbar Spinal StenosisARCHIMEDENCT06335511

Decompression Versus Instrumented Fusion for Lumbar Degenerative Disease. Clinical and Biomechanical Outcome Study

An observational study of Lumbar Spinal Stenosis and Degenerative Lumbar Spinal Stenosis, run by Azienda Usl di Bologna at 2 sites in Italy.

Completed

Finished. The study has ended and is not enrolling. Results may be posted on the official record.

Official record
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Trial summary

Identification of clinical and instrumental parameters that could predict the outcome of surgical decompression of lumbar degenerative stenosis. Read more about this study

Who is it for?
Ages 18 years and older
What is being tested?
microsurgical decompression and decompression and instrumented fusion
Type of treatment
Surgery or procedure
How many people
50 participants
Where
2 sitesItaly
Study dates
10 Oct 2022to 28 Feb 2025
Phase
Observational
Are there results?
None posted in the registry

Key requirements

Who can take part, as listed by the sponsor. Only the study team can confirm whether you are eligible, so take this list to your doctor.

  • Ages 18 years and older
  • All sexes
  • No healthy volunteers
  • Adult, Older adult

Study population: adult (>18yrs-old) patients with symptomatic degenerative lumbar stenosis.

Who may be able to join

  • degenerative lumbar stenosis caused by bone hypertrophy, osteoarthritis of facet joints, ligamentous hypertrophy, disc protrusion
  • midsagittal spinal canal diameter of 12 mm or less
  • no radiological signs of instability, i.e. pathological motion on preoperative dynamic lumbar X-ray
  • ongoing symptoms for a minimum of 12 weeks with no improvement to conservative treatment
  • eligibility for decompression alone (MiD) or decompression and fusion (MiD+F)

Who cannot join

  • congenital, traumatic, infectious and neoplastic lumbar stenosis,
  • spondylolisthesis (on static X-ray), lumbar scoliosis (Cobb>10°),
  • previous lumbar surgery, other types of operations (endoscopic decompression, anterior interbody fusions, interspinous devices etc.).
  • patients with spine deformity requiring long fusion (i.e. >=3 levels)

Trial locations and contacts

2 sites in 1 country.

Italy2 sites
  • IRCCS Istituto Ortopedico Rizzolo

    Bologna, Bologna, 40136

  • IRCCS Istituto delle Scienze Neurologiche di Bologna

    Bologna, Bologna, 40139

Other trials in Italy

About this study

Identification of clinical and instrumental parameters that could predict the outcome of surgical decompression of lumbar degenerative stenosis.

Read the detailed description

Degenerative lumbar spine is the most common cause of chronic pain and disability with remarkable economic impact. Treatment begins with conservative options (physical combined with antalgic therapy) but often requires surgical treatment.

Two different groups of patients affected by symptomatic lumbar stenosis with no preoperative radiological signs of instability will be recruited in a prospective trial and proposed for surgery: microsurgical decompression (MiD) or decompression and instrumented fusion (MiD + F). Clinical and mechanical outcomes of two different treatments (MiD vs. MiD+F) will be compared.

An in-vitro biomechanical study will evaluate the biomechanical effect of the two surgical techniques.

The aim of this project is to obtain robust data for tailoring the surgical approach to patient individual characteristics and needs, to gain the best clinical evidence, and possibly reducing the overall costs of management of this disease.

Being tested
microsurgical decompression, decompression and instrumented fusion
Medical subject headings
Spinal Stenosis

What participants receive

What participants receive. In a randomised study each person is assigned to one group by chance.

  • microsurgical decompressionProcedure or surgery

    Also called decompression

    decompression of neurological structures

  • decompression and instrumented fusionProcedure or surgery

    Also called stabilization

    decompression of neurological structures and spine stabilization

Study groups in NCT06335511
Study groupRoleWhat they receive
Decompressionmicrosurgical decompression (MiD)
Receives: Procedure: microsurgical decompression
Fusiondecompression and instrumented fusion (MiD + F)
Receives: Procedure: decompression and instrumented fusion

What is being measured

The primary outcome is the main question the study is designed to answer.

  1. Short Form 12

    The Short Form-12 (SF-12) healthy questionnaire is a generic standardized instrument assessing the impact of health on quality of life. It is made of twelve questions from which are calculated two different score: a Physical Component Score (with a score range 23,99 - 56,57) and a Mental Component Score (with a score range 19,06 - 60,75). The higher the number the better the outcome.

    Measured: at baseline (day 0)

  2. Short Form 12

    The Short Form-12 (SF-12) healthy questionnaire is a generic standardized instrument assessing the impact of health on quality of life. It is made of twelve questions from which are calculated two different score: a Physical Component Score (with a score range 23,99 - 56,57) and a Mental Component Score (with a score range 19,06 - 60,75). The higher the number the better the outcome.

    Measured: an average of 5 days (from baseline)

  3. Short Form 12

    The Short Form-12 (SF-12) healthy questionnaire is a generic standardized instrument assessing the impact of health on quality of life. It is made of twelve questions from which are calculated two different score: a Physical Component Score (with a score range 23,99 - 56,57) and a Mental Component Score (with a score range 19,06 - 60,75). The higher the number the better the outcome.

    Measured: 1 months (day 30)

  4. Short Form 12

    The Short Form-12 (SF-12) healthy questionnaire is a generic standardized instrument assessing the impact of health on quality of life. It is made of twelve questions from which are calculated two different score: a Physical Component Score (with a score range 23,99 - 56,57) and a Mental Component Score (with a score range 19,06 - 60,75). The higher the number the better the outcome.

    Measured: 3 months (day 90)

  5. Visual Analogue Scale

    The Visual Analogue Scale (VAS) is a pain rating scale, where the minimum score is 0 (no pain) and maximum score is 10 (maximum pain imaginable).

    Measured: at baseline (day 0)

  6. Visual Analogue Scale

    The Visual Analogue Scale (VAS) is a pain rating scale, where the minimum score is 0 (no pain) and maximum score is 10 (maximum pain imaginable).

    Measured: an average of 5 days (from baseline)

  7. Visual Analogue Scale

    The Visual Analogue Scale (VAS) is a pain rating scale, where the minimum score is 0 (no pain) and maximum score is 10 (maximum pain imaginable).

    Measured: 1 months (day 30)

  8. Visual Analogue Scale

    The Visual Analogue Scale (VAS) is a pain rating scale, where the minimum score is 0 (no pain) and maximum score is 10 (maximum pain imaginable).

    Measured: 3 months (day 90)

  9. Oswestry Disability Index

    The Oswestry Disability Index (ODI) is a patient-completed questionnaire which gives a percentage score, from 0% (no disability) to 100% (complete disability), of level of function (disability). It is made of ten questions and for each question there are six possible answers.

    Measured: at baseline (day 0)

  10. Oswestry Disability Index

    The Oswestry Disability Index (ODI) is a patient-completed questionnaire which gives a percentage score, from 0% (no disability) to 100% (complete disability), of level of function (disability). It is made of ten questions and for each question there are six possible answers.

    Measured: an average of 5 days (from baseline)

  11. Oswestry Disability Index

    The Oswestry Disability Index (ODI) is a patient-completed questionnaire which gives a percentage score, from 0% (no disability) to 100% (complete disability), of level of function (disability). It is made of ten questions and for each question there are six possible answers.

    Measured: 1 months (day 30)

  12. Oswestry Disability Index

    The Oswestry Disability Index (ODI) is a patient-completed questionnaire which gives a percentage score, from 0% (no disability) to 100% (complete disability), of level of function (disability). It is made of ten questions and for each question there are six possible answers.

    Measured: 3 months (day 90)

  13. EuroQol-5D

    The EuroQol-5D (EQ-5D) is an instrument for measuring quality of life. The score is based on two part. The first part includes five questions with three answers with a range from 1 (best outcome) to 3 (worst outcome). The second part consists in a numeric scale from 0 (worst outcome) to 100 (best outcome).

    Measured: at baseline (day 0)

  14. EuroQol-5D

    The EuroQol-5D (EQ-5D) is an instrument for measuring quality of life. The score is based on two part. The first part includes five questions with three answers with a range from 1 (best outcome) to 3 (worst outcome). The second part consists in a numeric scale from 0 (worst outcome) to 100 (best outcome).

    Measured: an average of 5 days (from baseline)

  15. EuroQol-5D

    The EuroQol-5D (EQ-5D) is an instrument for measuring quality of life. The score is based on two part. The first part includes five questions with three answers with a range from 1 (best outcome) to 3 (worst outcome). The second part consists in a numeric scale from 0 (worst outcome) to 100 (best outcome).

    Measured: 1 months (day 30)

  16. EuroQol-5D

    The EuroQol-5D (EQ-5D) is an instrument for measuring quality of life. The score is based on two part. The first part includes five questions with three answers with a range from 1 (best outcome) to 3 (worst outcome). The second part consists in a numeric scale from 0 (worst outcome) to 100 (best outcome).

    Measured: 3 months (day 90)

  17. Postural Balance

    Descriptive evaluation of sway area, symmetry and visual integration performed with wearable sensors (no min or max score available).

    Measured: at baseline (day 0)

  18. Postural Balance

    Descriptive evaluation of sway area, symmetry and visual integration performed with wearable sensors (no min or max score available).

    Measured: an average of 5 days (from baseline)

  19. Postural Balance

    Descriptive evaluation of sway area, symmetry and visual integration performed with wearable sensors (no min or max score available).

    Measured: 1 months (day 30)

  20. Postural Balance

    Descriptive evaluation of sway area, symmetry and visual integration performed with wearable sensors (no min or max score available).

    Measured: 3 months (day 90)

  21. Locomotor performance

    Descriptive evaluation of similarity to reference, variability, complexity and regularity measured with wearable sensors (no min or max score available).

    Measured: at baseline (day 0)

  22. Locomotor performance

    Descriptive evaluation of similarity to reference, variability, complexity and regularity measured with wearable sensors (no min or max score available).

    Measured: an average of 5 days (from baseline)

  23. Locomotor performance

    Descriptive evaluation of similarity to reference, variability, complexity and regularity measured with wearable sensors (no min or max score available).

    Measured: 1 months (day 30)

  24. Locomotor performance

    Descriptive evaluation of similarity to reference, variability, complexity and regularity measured with wearable sensors (no min or max score available).

    Measured: 3 months (day 90)

  25. Spinal mobility

    Descriptive evaluation of spinal mobility range and smoothness measured with wearable sensors (no min or max score available).

    Measured: at baseline (day 0)

  26. Spinal mobility

    Descriptive evaluation of spinal mobility range and smoothness measured with wearable sensors (no min or max score available).

    Measured: an average of 5 days (from baseline)

  27. Spinal mobility

    Descriptive evaluation of spinal mobility range and smoothness measured with wearable sensors (no min or max score available).

    Measured: 1 months (day 30)

  28. Spinal mobility

    Descriptive evaluation of spinal mobility range and smoothness measured with wearable sensors (no min or max score available).

    Measured: 3 months (day 90)

Secondary outcomes (1)
  1. Evaluation of costs

    The secondary outcome aims to compare the costs related to the two procedures themselfs (costs of the surgical procedure, hospital stay, blood transfusion, use of pain medications), but also the social costs related to absence from work (no min or max score available).

    Measured: after 3 years

Timeline

From the start of the study to its completion; the mark is today. Estimated dates are the sponsor’s plan.

  1. First posted28 Mar 2024
  2. Study start10 Oct 2022
  3. Primary completion15 Dec 2024
  4. Study completion28 Feb 2025

Resources

More details

For doctors and researchers: how the study is designed, who runs it, and its registry IDs.

Study design
Study type
Observational
Observational model
Cohort
Time perspective
Prospective
Enrolment
50 participants (actual)
IDs, dates and publications
ClinicalTrials.gov ID
NCT06335511
Sponsor's protocol ID
631-2021-OSS-AUSLBO
Acronym
ARCHIMEDE
Status last verified
Jul 2025
First submitted
13 Mar 2024
Last updated
11 Feb 2026
Results posted
No
Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
Individual data sharing
Undecided

Publications

  • Zaina F, Tomkins-Lane C, Carragee E, Negrini S. Surgical versus non-surgical treatment for lumbar spinal stenosis. Cochrane Database Syst Rev. 2016 Jan 29;2016(1):CD010264. doi: 10.1002/14651858.CD010264.pub2.

    PubMed 26824399
  • Scholler K, Alimi M, Cong GT, Christos P, Hartl R. Lumbar Spinal Stenosis Associated With Degenerative Lumbar Spondylolisthesis: A Systematic Review and Meta-analysis of Secondary Fusion Rates Following Open vs Minimally Invasive Decompression. Neurosurgery. 2017 Mar 1;80(3):355-367. doi: 10.1093/neuros/nyw091.

    PubMed 28362963
  • Ghogawala Z, Dziura J, Butler WE, Dai F, Terrin N, Magge SN, Coumans JV, Harrington JF, Amin-Hanjani S, Schwartz JS, Sonntag VK, Barker FG 2nd, Benzel EC. Laminectomy plus Fusion versus Laminectomy Alone for Lumbar Spondylolisthesis. N Engl J Med. 2016 Apr 14;374(15):1424-34. doi: 10.1056/NEJMoa1508788.

    PubMed 27074067
  • Overdevest GM, Jacobs W, Vleggeert-Lankamp C, Thome C, Gunzburg R, Peul W. Effectiveness of posterior decompression techniques compared with conventional laminectomy for lumbar stenosis. Cochrane Database Syst Rev. 2015 Mar 11;2015(3):CD010036. doi: 10.1002/14651858.CD010036.pub2.

    PubMed 25760812
  • Schmidt S, Franke J, Rauschmann M, Adelt D, Bonsanto MM, Sola S. Prospective, randomized, multicenter study with 2-year follow-up to compare the performance of decompression with and without interlaminar stabilization. J Neurosurg Spine. 2018 Apr;28(4):406-415. doi: 10.3171/2017.11.SPINE17643. Epub 2018 Jan 26.

    PubMed 29372860
  • Weiss AJ, Elixhauser A, Andrews RM. Characteristics of Operating Room Procedures in U.S. Hospitals, 2011. 2014 Feb. In: Healthcare Cost and Utilization Project (HCUP) Statistical Briefs [Internet]. Rockville (MD): Agency for Healthcare Research and Quality (US); 2006 Feb-. Statistical Brief #170. Available from http://www.ncbi.nlm.nih.gov/books/NBK195245/

    PubMed 24716251

Questions about this trial

What is this clinical trial studying?

An observational study of Lumbar Spinal Stenosis and Degenerative Lumbar Spinal Stenosis, run by Azienda Usl di Bologna at 2 sites in Italy.

The full registered description is in the About this study section and the official record.

Who may be eligible to take part?

The sponsor lists 5 inclusion and 4 exclusion criteria. Eligibility is decided by the study team after screening, so read the full criteria and contact a listed site.

Is this clinical trial currently recruiting?

The record says: finished, as of the sponsor's last update on 11 Feb 2026. Status can change between updates, so confirm with the study contact before making plans.

Where is the study taking place?

The record lists 2 sites in Italy. Whether a site is taking part right now should be confirmed with that site. See every site.

What are the possible benefits and risks?

They depend on the study and the treatment, and no study can promise a benefit. The study team explains the known risks during informed consent, before anyone joins; the record itself does not list them.

Are results available for this study?

The study is completed, but results are not available in the source record. That does not mean the treatment did or did not work.

How can a doctor refer a patient or contact the research team?

The record lists no contact. The official record names the sponsor, who can be asked directly. AzTrials does not enrol participants or take referrals.

What does the primary outcome measure?

Short Form 12 (time frame: at baseline (day 0)). The study lists 28 primary outcomes in all. It is what the study was designed to measure, not a finding.

Where can I read the original study information?

On the ClinicalTrials.gov record for NCT06335511, which also lists 6 linked publications.

Does a listing mean the treatment is approved or proven to work?

No. A listing means the study is registered. It does not show that the treatment is safe, works, or is approved by a regulator.

How often is this information updated?

AzTrials copies changed records from ClinicalTrials.gov every night and reloads the whole registry every week. The sponsor last updated this record on 11 Feb 2026.

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