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Comparison of Strength, Weight Bearing, Proprioception, Reaction Time and Function in Scapholunate Instability

NCT07134452 · Status: ACTIVE_NOT_RECRUITING · Type: OBSERVATIONAL · Enrollment: 40

Last updated 2025-08-21

No results posted yet for this study

Summary

Scapholunate (SL) instability is the most common type of instability seen in the wrist, resulting from SLI injury or excessive mobility \[1,2\]. It usually occurs after trauma and can range from mild injury to severe malalignment \[3\]. Symptoms include dorsal pain, clicking sound, limited movement, increased pain with weight-bearing, and weakness \[4,5\]. Pain reduces joint movement and grip strength, limiting daily activities \[6\]. If there is no dislocation, conservative treatment (education, exercise, splinting) is applied \[7\].

The wrist absorbs and transfers load through ligaments. During flexion-extension, the scaphoid and lunate follow the capitate \[10\]. SLIL injuries alter forearm muscle activation. EKRL, EKRB, APL, and FKR are "scapholunate-friendly" muscles; EKU is not recommended due to its pronator effect \[12-15\]. SLIL mechanoreceptors enhance dynamic stability \[11,19\]. There are no studies objectively measuring the strength of these muscles.

Isokinetic muscle assessment has not been performed in SL instability. These measurements objectively determine muscle strength and imbalances, personalizing treatment. Weight transfer capacity, reaction time, and proprioception have also not been studied. However, weight transfer is an indicator of stability, proprioception is critical for functionality, and reaction time reflects neuromuscular response speed \[23-27\].

The aim of this study is to compare forearm isokinetic muscle strength, grip strength, weight transfer, proprioception, reaction time, and functionality in individuals with SL instability with those in healthy individuals.

Conditions

  • Scapholunate Interosseous Ligament Injury
  • Scaphoid-Lunate Instability
  • Scapholunate Dissociation

Interventions

DIAGNOSTIC_TEST

Baseline Assessments

Evaluation of isokinetic muscle strength, grip strength, upper extremity weight-bearing capacity, proprioceptive sense, reaction time, and functional performance in both groups

Sponsors & Collaborators

  • İstanbul Yeni Yüzyıl Üniversitesi

    collaborator OTHER

  • Hacettepe University

    lead OTHER

Principal Investigators

  • Arzu Dağ · Hacettepe University

Eligibility

Min Age
18 Years
Max Age
45 Years
Sex
ALL
Healthy Volunteers
Yes

Timeline & Regulatory

Start
2025-06-01
Primary Completion
2025-10-01
Completion
2025-12-01

Countries

  • Turkey (Türkiye)

Study Locations

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Read the full study record

This page highlights key information. For complete eligibility criteria, study locations, investigator contacts, and the full protocol, visit the original record on ClinicalTrials.gov.

View NCT07134452 on ClinicalTrials.gov