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J Biomech 2022 Jul 30;142:111236. Epub 2022 Jul 30.

University of Pittsburgh, Department of Orthopaedic Surgery, United States. Electronic address:

Dynamic biplane radiography (DBR) in conjunction with model-based tracking (MBT) has provided a suitable mechanism for biomechanical assessment of many joints but has not yet achieved widespread use at the thumb and wrist. The purpose of this work is to determine the accuracy of DBR with markerless MBT for the evaluation of thumb and wrist joint kinematics. Three 0. Read More

J Hand Surg Am 2022 Aug 5. Epub 2022 Aug 5.

Department of Pediatric Orthopaedics, GuangZhou Women and Children's Medical Center, GuangZhou, China. Electronic address:

Purpose: The objectives of this study were to (1) evaluate the radiographic characteristics of children with congenital thumb duplication (CTD) seen in our institution between August 2015 and April 2021; (2) introduce a modified radiographic classification system (MCS) capable of including all cases of CTD based on their radiographic pathoanatomy; and (3) evaluate the inter- and intrarater reliability of the new classification system.

Methods: We retrospectively reviewed 2,108 patients with 2,300 CTDs. The MCS is based on the Wassel-Flatt and Chung et al classification systems and includes specific subtypes from the Rotterdam and modified Wassel-Flatt classifications. Read More

J Hand Ther 2022 Aug 1. Epub 2022 Aug 1.

Programs in Occupational Therapy and Rehabilitation Science, University of Minnesota, Program in Occupational Therapy, University of Minnesota, Minneapolis, MN, USA.

Study Design: Retrospective case series.

Introduction: Literature trends indicate that thumb dynamic stabilization may benefit clients with thumb carpometacarpal (CMC) joint pain and arthritis. There is minimal research investigating whether client characteristics predict responsiveness to hand therapy for thumb dynamic stabilization. Read More

Med Eng Phys 2022 08 16;106:103837. Epub 2022 Jun 16.

Dept. Development & Regeneration, KU Leuven, Belgium.

Full thumb mobility is required to execute tasks of daily living and results from the combined motions of the thumb joints. In this study, we focus on the coupling between the proximal joints of the thumb, the radioscaphoid (RS), scaphotrapezial (ST) and trapeziometacarpal (TMC) joints. We quantified the 3D kinematics of these joints during maximal thumb extension and abduction in a group of healthy volunteers using an image-based technique. Read More

J Wrist Surg 2022 Jun 15;11(3):272-278. Epub 2021 Jul 15.

Northern Care Alliance, Royal Oldham Hospital, Oldham, England, United Kingdom.

 The trapeziometacarpal articulation in the thumb is a joint that is second-most commonly affected by osteoarthritis, and this can lead to considerable hand pain and disability. Currently, there is a multiplicity of surgical options available to address this problem, yet none has proven to be significantly superior to the others.  This study aims to compare the outcome of trapeziectomy with ligament reconstruction and tendon interposition versus trapeziometacarpal joint replacement for thumb carpometacarpal osteoarthritis. Read More