Postoperative Intramuscular Pressure of the Multifidus Muscle and Low Back Pain: A Randomized Study Comparing Mini-open with Conventional Posterior Lumbar Interbody Fusion

Postoperative Intramuscular Pressure of the Multifidus Muscle and Low Back Pain: A Randomized Study Comparing Mini-open with Conventional Posterior Lumbar Interbody Fusion - Postoperative Intramuscular Pressure and Low Back Pain after PLIF

Status

Active, not recruiting

Phases

Unknown

Study type

Interventional

Source

JPRN

Registry ID

JPRN-UMIN000010069

Enrollment

Registered

2013-02-18

Start date

2007-11-01

Completion date

Unknown

Last updated

2026-06-29

For informational purposes only — not medical advice. Sourced from public registries and may not reflect the latest updates. Terms

Conditions

spondylolisthesis

Interventions

Mini-open PLIF Conventional PLIF

Eligibility

Sex/Gender

All

Inclusion criteria

Inclusion criteria: spondylolisthesis at the single level of L4-L5 absence of associated lumbar lesions at a level other than L4-L5 failure of conservative therapy for several months

Exclusion criteria

Exclusion criteria: scoliosis, isthmic spondylolisthesis, rheumatoid arthritis, dialysis-related spondyloarthropathy, infection, or tumors

Design outcomes

Primary

Measure	Time frame
Postoperative intramuscular pressure, Postoperative low back pain The pressure is measured five times (30 minutes, 6, 12, 24, and 48 hours after surgery). The assessment of low back pain is performed before surgery and after surgery (2 weeks, 1 month, 3 months, 6 months, and 12 months).	—

Countries

Japan

Contacts

Public ContactYoshihiro Mukai

Osaka Kosei-nenkin Hospital Department of Orthopedic Surgery

Outcome results

None listed

Source: JPRN (via WHO ICTRP) · Data processed: Jul 3, 2026