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The KinematX Midcarpal Total Wrist Arthroplasty Registry

The KinematX Midcarpal Total Wrist Arthroplasty: A Multicenter Prospective Registry of Clinical and Patient-Reported Outcomes

Who can join

Ages 18 to 85 · All sexes

Inclusion Criteria:

* one of the following diagnoses and planned (or previously completed) total wrist arthroplasty with the KinematX total wrist:

  * osteoarthritis or post-traumatic arthritis
  * scapholunate advanced collapse (SLAC/SNAC wrist),
  * inflammatory arthritis (rheumatoid, psoriatic, other),
  * crystalline advanced collapse (SCAC),
  * STT advanced collapse (STTAC),
  * ulnar translocation,
  * Kienbӧck disease,
  * radial malunion

Exclusion Criteria:

* \<18 years of age
* \>85 years of age
* Prisoners
* Children
* Pregnant women
* Contraindications to receiving the KinematX:

  * Local, distant or systematic acute or chronic soft tissue or bony infection
  * Physiologically or psychologically compromised patient
  * Active wrist synovitis or severe carpal bone erosion
  * Suspected or documented metal allergy or intolerance
  * Insufficient extensor tendons
  * Inadequate skin, bone, neural or vascular status
  * Severe carpal bone malalignment, displacement, absorption, neoplastic, or carpal bone pathology
  * Sepsis
  * Osteomyelitis
  * Uncontrolled/untreated osteoporosis or metabolic bone disease
  * Metabolic or endocrinologic bone disorders
  * Osteomalacia
  * Distant foci of infections which may spread to the implant site
  * Rapid joint destruction, marked bone loss or bone resorption apparent on roentgenogram

About the study

The goal of this observational study is to learn about functional and patient reported outcomes in patient undergoing total wrist replacement with the KinematX total wrist replacement study.

The main questions it aims to answer are:

* What is the range of motion (flexion, extension, radial, ulnar, grip and pinch strength) at 3-, 6-, and 12-months after surgery and yearly up to 10 years among patients having total wrist replacement with the KinematX implant. * What are the patient reported outcomes (PROMIS, PRWE, HSS wrist expectations) at 3-, 6-, and 12-months after surgery and yearly up to 10 years among patients having total wrist replacement with the KinematX implant. * How do range of motion and patient reported outcomes change over the 10 years after total wrist replacement surgery?

Participants will be followed according to standard of care and preoperative and post-operative information for up to 10 years after surgery will be collected and entered into an electronic data base. Patients are eligible to enroll into the registry before or after they have had their wrist replacement surgery.

What is being tested

• KinematX total wrist arthroplasty system (device)

Sponsor: Extremity Medical · Participants: 50 · Started: Apr 26, 2021

Contact the study team

• Brian Smekal · Phone: +1 952-836-5698

Official record on ClinicalTrials.gov — NCT05719935

Locations in the U.S.

Conditions

• Carpal Tunnel Syndrome
• Arthritis
• Osteoarthritis

From ClinicalTrials.gov, data retrieved Sep 30, 2026. Each study sets its own eligibility; the study team decides who can join.