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Proximal Row Carpectomy vs Four-corner Fusion for Osteoarthritis of the Wrist

A Double-blinded Randomized Controlled Multicenter Trial Comparing Proximal ROw carpectOmy and Four-corner Fusion (PROOF) for Osteoarthritis of the Wrist

Status
Recruiting
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT04260165
Acronym
PROOF
Enrollment
84
Registered
2020-02-07
Start date
2020-10-01
Completion date
2034-12-31
Last updated
2021-01-19

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

Conditions

Scapholunate Advanced Collapse, Wrist Osteoarthritis

Keywords

Wrist Osteoarthritis, Scapholunate Advanced Collapse, Scaphoid Non-union Advanced Collapse, Wrist arthrodesis, Proximal Row Carpectomy

Brief summary

Study purpose is to compare the outcome after proximal row carpectomy (PRC) vs four-corner fusion (FCA) for SLAC/SNAC II-III type osteoarthritis (OA) in a double-blinded randomized controlled study setting. Patients with radiologically and clinically confirmed OA are randomized (1:1 computer generated sequence with random block size) to two parallel groups and will undergo either PRC or FCA. The study will be patient and assessor blinded. Baseline data is collected preoperatively and is followed by a follow-up visits at 2 and 6 weeks, 3, 6, 12 months, and 5, 10 years after the intervention. Unveiling of the allocation is at 12 months post-intervention.

Interventions

Excision of the proximal carpal row - the scaphoid, lunate and triquetrum

PROCEDUREFour-corner fusion

Scaphoid excision and four-corner fusion with cannulated headless compression screws/dorsal plate

Sponsors

Tampere University Hospital
CollaboratorOTHER
Turku University Hospital
CollaboratorOTHER_GOV
Jyväskylä Central Hospital
CollaboratorOTHER
Kymenlaakso Central Hospital Kotka Finland
CollaboratorOTHER
Töölö Hospital
Lead SponsorOTHER

Study design

Allocation
RANDOMIZED
Intervention model
PARALLEL
Primary purpose
TREATMENT
Masking
DOUBLE (Subject, Outcomes Assessor)

Eligibility

Sex/Gender
ALL
Age
18 Years to 75 Years
Healthy volunteers
No

Inclusion criteria

* SLAC/SNAC II-III * Age 18 - 75 * Symptom duration \> 3 months * American Society of Anaesthesiologists physical status (ASA) I-II

Exclusion criteria

* Patient eligible for SL reconstruction or scaphoid * Ulnocarpal/pancarpal arthritis * Lunate fossa, proximal lunate arthrosis or both * Age \<18 or \>75 years * Rheumatoid arthritis * Heavy smoking (\> 20 cigarettes per day) * Condition or medication affecting bony healing (eg diabetes mellitus with poor glycemic control, malnutrition, use of per oral corticosteroids) * Alcohol or drug abuse * Neurological condition affecting upper limb function

Design outcomes

Primary

MeasureTime frameDescription
Patient-Rated Wrist Evaluation12 monthsThe PRWE comprises 15 questions to measure wrist pain and disability in daily activities. In PRWE patients rate wrist pain and disability from 0 to 10 and it consists two subscales: Pain and Function (0=best possible outcome, 10=worst possible outcome)

Secondary

MeasureTime frameDescription
Pain (Visual Analogue Scale)12 monthsThe VAS is derived by health care professional question of pain in scale 0 to 10 (0=no pain, 10=worst possible pain)
Global improvement12 monthsGlobal rating to treatment effect will be evaluated by question: How would you rate the function of your hand compared to the situation before the treatment?. The options are in 5-step Likert scale from (-2) Much worse to (+2) Much better
Grip strength12 monthsGrip strength is measured with a dynamometer in kg as the mean of three measurements. It will be numbered in kg and percentage of the unaffected side
Quick-Disabilities of the Arm, Shoulder and Hand12 monthsThe QuickDASH is self-reported questionnaire and shortened version of DASH outcome measure to measure physical function and symptoms in people with any or multiple musculoskeletal disorders of the upper limb in 11 dimensions in 1-5 scale (1=best possible outcome, 5=worst possible outcome)
Complications12 monthsIncidence of complications (i.e. non-union, fracture, reoperation, infection, hematoma, iatrogenic tendon/nerve/arterial injury, complex regional pain syndrome) is recorded and compared between study groups.
Patient-rated Quality of Life (EQ-5D)12 months
Cost-effectiveness12 monthsQuality-adjusted life years/months measured as a change in EQ-5D
Wrist range of motion (ROM)12 monthsWrist ROM is measured on both wrists with a handheld goniometer in degrees.

Countries

Finland

Contacts

Primary ContactSamuli Aspinen, MD, PhD
samuli.aspinen@hus.fi+358406360546
Backup ContactJorma Ryhänen, adj. prof.
jorma.ryhanen@hus.fi

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 10, 2026