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Poly-L/D-lactide Implant (RegJoint) Versus Tendon Interposition for Trapeziometacarpal Inflammatory Arthritis: a 15-year Follow-up

Long-term Outcome of Partial Trapeziectomy With Interposition of Poly-L/D-lactide Scaffold (RegJoint) vs. Autologous Tendon for Inflammatory Trapeziometacarpal Joint Arthritis.

Status
Completed
Phases
NA
Study type
Interventional
Source
ClinicalTrials.gov
Registry ID
NCT06804356
Enrollment
21
Registered
2025-02-03
Start date
2019-10-09
Completion date
2020-04-02
Last updated
2025-02-03

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

Conditions

Rheumatoid Arthritis (RA)

Brief summary

This is a late (about 15 years) follow-up study of a randomized prospective clinical study originally conducted as a collaboration of the Rheumatism Foundation Hospital, Heinola, Finland and Päijät-Häme Central Hospital, Lahti Finland. For the original study thirty-five patients with symptomatic end-stage inflammatory arthritis of the trapeziometacarpal joint were recruited. All patients signed written informed consent and were randomised to undergo surgery using either tendon interposition or poly-L-D-lactic acid implant interposition arthroplasty of said joint. The study was approved by the Päijät-Häme hospital district ethics committee. Results of up to two years of follow-up have been published previously (DOI: 10.3109/2000656X.2012.669202). For the current study all patients included in the final data analysis of the original study are to be contacted for a late follow-up using the same metrics used in the original study (hand pain and hand function rated on a visual analogue scale, hand strenght measurements, hand range of motion measurements, hand dexterity tests and tests simulating hand function in activities of daily living). Additionally outcomes will be assessed using the Patient Rated Wrist/Hand Evaluation and QuickDASH clinical outcome measurement scores. Collected follow-up data will be statistically analyzed and a summary will be published in a peer-reviewed scientific journal.

Interventions

PROCEDURETendon interposition arthroplasty

Trapeziometacarpal arthroplasty using autologous tendon interposition to fill the space left by resecting affected joint surfaces.

PROCEDUREPoly-L-D-lactic acid implant (RegJoint) interposition arthroplasty

Trapeziometacarpal arthroplasty using poly-L-D-lactic acid implant (RegJoint) interposition to fill the space left by resecting affected joint surfaces.

Sponsors

Helsinki University Central Hospital
Lead SponsorOTHER

Study design

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

Eligibility

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

Inclusion criteria

Inclusion Criteriria: Patients of the study the results of which are reported in the following article: DOI: 10.3109/2000656X.2012.669202 Inclusion criteria for the original study: * Symptomatic end- stage inflammatory arthritis of the trapeziometacarpal joint * Trapeziometacarpal arthroplasty at Rheumatism Foundation Hospital, Heinola between january 2004 and december 2005 * Signed written informed consent

Exclusion criteria

for the original study: -age less than 18 years

Design outcomes

Primary

MeasureTime frameDescription
Hand grip strengthApproximately 15 years from enrollmentPower grip strength (in kg) measured using a jamar hand dynamometer. Key pinch and tip pinch strength (in kg) mearured using a mechanical pinch gauge.
Hand painApproximately 15 years from enrollmentPain of the studied / operated hand using a 0-100mm visual analogue scale where 0mm denotes no pain at all and 100mm denotes worst pain imaginable.
Hand functionApproximately 15 years from enrollmentFunction of the studied / operated hand using a 0-100mm visual analogue scale where 0mm denotes normal hand function and 100mm denotes the hand not functioning at all.
QuickDASH scoreThe previous week before approximately 15 years from enrollmentThe Disabilities of the Arm, Shoulder, and Hand (DASH) is a clinical outcome measure questionnaire consisting of thirty questions and has been validated several times. The QuickDASH score includes eleven of those questions and has been validated as well. Both scores are used to evaluate upper limb function and symptoms during the previous week.
Hand range of motionApproximately 15 years from enrollmentActive range of motion for following joints / parts of the hand: trapeziometacarpal joint radial abduction, thumb metacarpophalangeal joint extension and flexion, thumb interphalangeal joint extension and flexion.
Box and block dexterity testApproximately 15 years from enrollmentThe Box and block dexterity consists of a rectangular box with a central dividing wall. The box is set on a table in front of the patient in a lengthwise orientation with the dividing wall at the patients midline. At the beginning of the test all 150 wooden cubes each 2,5cm are placed in the compartment on the side of the hand being tested. The test performed by moving as many 2,5cm wooden cubes one by one by hand from one box to another within 60 seconds as possible. Before the actual test the patient practices performing the test for 15 seconds with each hand,
Simulated activities of daily living testsApproximately 15 years from enrollmentDecanting water from a jug gripping the jug by its handle into a glass / cup. Decanting water from a glass / cup into jug gripping the glass with a palm grip. Cutting medical putty disc with knife and fork simulating cutting food on a plate. Picking up a wooden bead approximately 1cm in diameter using a pinch grip. The test is repeated four times for each hand so that the patient always uses their thumb but the opposing finger is different each time. Grading for all tests: Normal grip / adapted grip / unable to perform.
Radiological resultsApproximately 15 years from enrollmentTrapeziometacarpal joint (sub)luxation, joint trapeziometacarpal joint space height and bone destruction adjacent to the trapeziometarcpal joint using posterior to anteriot as well as lateral plain radiographs.
Patient Rated Wrist/Hand Evaluation clinical outcome measureThe previous week before approximately 15 years from enrollmentThe Patient-Rated Wrist and Hand Evaluation questionnaire is a region specific, patient reported outcome measure that aims to evaluate pain and disability of the wrist and hand. In one question the patient is asked about their hand / wrist today, while in fifteen questions the patient is asked about their hand / wrist this week. The score has been validated multiple times.

Countries

Finland

Outcome results

None listed

Source: ClinicalTrials.gov · Data processed: Feb 4, 2026