Function Following Thumb MP Fusion and IP Fusion

NYU Langone Health

Status: Completed

Conditions: Osteoarthritis

Treatments: Diagnostic Test: Pinch strength; Diagnostic Test: Jebsen Taylor Hand function test; Diagnostic Test: Grooved pegboard test

Study type: Interventional

Funder types: Other

Identifiers

NCT03661281

17-01281

Details and patient eligibility

About

This study is to determine function following simulated thumb metacarpophalangeal (MP) and thumb interphalangeal (IP) joint fusion. The investigators want to determine the functional limitation created by MP and IP joint fusion. 20-30 volunteers will be fitted for custom molded orthoplast splints immobilizing either the MP or IP joint. The volunteers will then be taken through multiple tests including lateral pinch strength, tip pinch, grip strength, grooved pegboard test time, and Jebson Taylor test. Each patient will be tested without a splint, with their MP joint immobilized and with their IP joint immobilized. The results of this study can be used for patient education before surgery in order to help them make informed decisions as well as manage expectations. It can also serve as a decision aid in pinch restoration in the context of ulnar nerve palsy.

Enrollment: 32 patients

Sex: All

Ages: 18 to 80 years old

Volunteers: Accepts Healthy Volunteers

Inclusion criteria

• Patient is a healthy volunteer
• Patient is willing and able to review and sign a study informed consent form

Exclusion criteria

• Any subject who does not want to voluntarily participate.

Trial design

Primary purpose: Treatment

Allocation: N/A

Interventional model: Single Group Assignment

Masking: None (Open label)

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32 participants in 1 patient group

Simulated Thumb Arthrodesis

Experimental group

Description:

Subjects will have their thumb immobilized in 2 prefabricated wrist splints to simulate 2 different fusion positions tested: one splint to simulate the MCP fusion and one to represent the IP fusion. Patients will complete hand function tests in each of the splints to evaluate hand function.

Treatment:

Diagnostic Test: Pinch strength

Diagnostic Test: Jebsen Taylor Hand function test

Diagnostic Test: Grooved pegboard test