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Not yet recruitingNCT06554093PKSforPSPUpdated Feb 5, 2025

Study Comparing the PathKeeper System for Pedicle Screw Positioning in Spine Surgery with Traditional Care

An interventional study of Medical Device - PKS in Scoliosis, Scoliosis; Adolescence and Scoliosis Kyphosis, sponsored by Deep Health Ltd.. Not yet recruiting at 1 site in United Kingdom. Open to participants aged 16 Years and older, including healthy volunteers. Per ClinicalTrials.gov, last updated 2025-02-05.

Sponsored by Deep Health Ltd. · Not applicable, Interventional, and Treatment

From the registry’s dates

  • Primary completion was expected by Oct 2025, 1 year ago, but the record still lists the study as not yet recruiting.
Phase
Not applicable
Study type
Interventional
Enrollment
32
Allocation
Randomized
Ages
16 Years and older
Sex
All
01

Study summary

The goal of this is to evaluate performance of the Pathkeeper Surgical System. The main question[s]it aims to answer are: 1) evaluate pedicle screw position Participants will in compare Experimental arm: PathKeeper System (PKS) with control arm

Read the detailed description

Trial design

  • Allocation: Randomized
  • Interventional Model: Parallel Assignment (double armed)
  • Interventional Model Description: Dual center, prospective, randomized cohort study.
  • Masking: None (Open Label)
  • Primary Purpose: Treatment
  • Enrolment: 32 (thirty-two) patients - 16 (sixteen) patients experimental and 16 control arms (100 screws each arm, estimated 20% of patients drop out).

Study arms

  1. Experimental arm: PathKeeper System (PKS) One to ten-level posterior, open, instrumented spine surgery using unilateral or bilateral pedicle screw instrumentation under PKS intraoperative navigation guidance.

    Interventions: Medical Devise - PKS. The PKS spine navigation system is for spatial positioning and orientation of surgical instruments during pedicle screw implantation in patients undergoing posterior fixation in single or multiple levels.

  2. Control arm: free-hand technique guided by intra-operative 2D Fluoroscopy One to ten-level posterior, open, instrumented spine surgery using unilateral or bilateral pedicle screw instrumentation under free-hand technique guided by intra-operative 2D fluoroscopy.

Interventions: Pedicle screws will be placed using the free-hand technique with 2D fluoroscopy as the intraoperative imaging modality.

Primary endpoints:

Evaluate and classify the pedicle screw positions as per the Gertzbein-Robbins classification scale based on a low-dose post-operative CT scan, in each study arm and comparatively.

Number of misaligned screws as per the Gertzbein-Robbins classification scale (Gertzbein and Robbins, 1990) class E screws class D screws class C screws class B screws class A screws

Secondary endpoints:

  1. Evaluate radiation exposure dose and time in the operating room during the procedure in each study arm and comparatively.
  2. Evaluate time-per-screw for the experimental device arm (PKS) arm.
  3. Length of stay - (non-critical)
  4. Estimated blood loss (EBL) - (non-critical)
  5. Number of reported complications (neurological deficits, dural tears, deep wound infections, etc.) while hospitalized
02

Conditions studied

  • Scoliosis
  • Scoliosis; Adolescence
  • Scoliosis Kyphosis
  • Scoliosis Lumbar Region
  • Scoliosis Thoracic Region
  • Pathologic Fracture

Keywords

  • fusion
  • screw positioning
  • screw insertion
03

In context

Scoliosis

660 studies on the registry are indexed under Scoliosis; 186 are open to participants now.

This study's planned enrollment of 32 is below the median of 45 across 386 interventional studies indexed under Scoliosis.

Browse Scoliosis studies →

Lead sponsor

Deep Health Ltd. is the lead sponsor of 2 studies on the registry; 1 is open to participants now.

Counted across the registry records on this site, refreshed daily.

04

Who can participate

Ages eligible
16 Years and older
Sexes eligible
All
Accepts healthy volunteers
Yes

Go through the criteria one by one — yes, no or not sure — and take the list to your doctor or the study team. Kept in this browser only.

Inclusion criteria

  • Men and women
  • 16 and above years old
  • Patients who are about to undergo open, instrumented spinal surgery
  • Signed form

Exclusion criteria

Exclusion Criteria:

  • Men and women
  • 16 and above years old
  • Patients who are about to undergo open, instrumented spinal surgery
  • Signed form
Terms in these criteria, in plain language(1)

Underlined terms in the criteria open these too. Explained by clinicaltrials.gg, not part of the registry record. The study team decides who can take part.

Informed consent

Before you join, the study team explains what taking part involves — its purpose, what happens, the risks and possible benefits — and answers your questions, so you can decide freely. Consent is usually recorded on a form (the informed consent form, ICF) signed by you or, where the law allows, by someone legally authorised to decide for you.

You can keep asking questions during the study, you are told of new information that matters, and you can choose to leave at any time.

05

Study design

Phase
Not applicable
Primary purpose
Treatment
Allocation
Randomized
Intervention model
Parallel assignment
Masking
None (open label)
Enrollment
32 participants (estimated)

Study arms

  • Experimental
    Medical Device- PathKeeper System (PKS)

    One to ten-level posterior, open, instrumented spine surgery using unilateral or bilateral pedicle screw instrumentation under PKS intraoperative navigation guidance. Intervention: Medical Device - PKS. The PKS spine navigation system is for spatial positioning and orientation of surgical instruments during pedicle screw instrumentation in patients undergoing posterior fusion in single or multiple levels.

    Device: Medical Device - PKS

  • Active comparator
    2D Fluoroscopy

    Control arm: Standard of care - free-hand technique guided by intra-operative 2D Fluoroscopy One to ten-level posterior, open, instrumented spine surgery using unilateral or bilateral pedicle screw instrumentation under free-hand technique guided by intra-operative 2D fluoroscopy

    Device: Medical Device - PKS

Interventions

  • DeviceMedical Device - PKS

    The PKS spine navigation system is for spatial positioning and orientation of surgical instruments during pedicle screw instrumentation in patients undergoing posterior fusion in single or multiple levels.

    Also known as: Device- Fluoroscopy

06

What researchers measure

Primary outcomes

  1. Accuracy of the screw implantation by Gertzbein-Robbins scale

    Mean and STD of Gertzbein-Robbins classification scale based on a low-dose post-operative CT scan

    Time frame: Post-operative CT scan to be performed before hospital discharge and evaluation can be done right after or at the end of the of the data collection

Secondary outcomes

  1. Evaluate radiation exposure dose and time in the operating room during the procedure in each study arm and comparatively.

    Mean and STD Values in milli-gray (mGy) and seconds collected from the c-Arm

    Time frame: 24 hours after surgery

  2. Evaluate time-per-screw for the experimental device arm (PKS) arm.

    Operative time per screw

    Time frame: Values to be collected during each surgery once the last screw insertion is completed (1-2 hours within the surgery)

07

Study locations

1 site
  • Leeds Hospital
    Leeds, West Yorkshire LS9 7TF, United Kingdom
    • Almas Khan, MD · Contactalmas.khan@nhs.net · +44 113 392 8575
    • Almas Khan, MD · Contact
08

References and documents

Individual participant data

Plan to share: No — To be done

No publications or documents are linked to this record.

09

Timeline

Tracking since Sep 25, 2026
ElapsedEstimatedEstimated, not yet reachedSimilar studies: half by the dot; the band is the middle halfHalf of similar studies reached it by the dot; the band is the middle half, from a quarter to three quarters

Start is estimated for Oct 2025; primary completion for Oct 2025, 0 months later.

Of 233 interventional studies with no phase under Scoliosis, half reached primary completion within 22 months of starting (the median), counting those still running; a quarter within 8 and three quarters within 60. This study's planned 0 months is below that.

How these figures are worked out, and which studies are left out of them.

Registered
Mar 12, 2024
First posted
Aug 14, 2024
StartEst.
Oct 30, 2025
Primary completionEst.
Oct 30, 2025
CompletionEst.
Oct 30, 2025
Last update
Feb 5, 2025
What these dates mean
Start.
When the first participant enrolled; while estimated, when the study expects to open to recruitment.
Primary completion.
When the last participant was examined or treated to collect data for the study's main question, its primary outcome. A study that stopped early gives the date its data collection stopped.
Completion.
When the last participant's last visit took place, for every outcome, secondary ones and side effects included: the end of the study. Often later than primary completion, sometimes the same day.
Actual and Est.
Actual means the registry says the date has happened. Est. (estimated) is a date the sponsor plans or expects. It can still move, and the sponsor is expected to change it to actual once it has passed.
No changes since tracking began. The registry record was last updated on Feb 5, 2025, before this site started recording changes on Sep 25, 2026. Its history is on ClinicalTrials.gov ↗
10

Registry details

Key details

Study ID
NCT06554093
Lead sponsor
Deep Health Ltd.
Responsible party
Sponsor
First posted
Aug 14, 2024
Start date
Oct 30, 2025 (estimated)
Primary completion
Oct 30, 2025 (estimated)
Completion
Oct 30, 2025 (estimated)
Last update
Feb 5, 2025

Oversight

Data monitoring committee
No
FDA-regulated drug
No
FDA-regulated device
No
View the source record on ClinicalTrials.gov ↗

Not currently enrolling

This study is not yet recruiting, as verified in Aug 2024. You cannot join it, but the record below documents what was studied.

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