Publications by authors named "J E Kalshoven"
Article Synopsis
- Osteoarthritis in the thumb's carpometacarpal joint leads to significant loss of motion and function, and the study examines how osteophyte growth affects this motion.
- Using a robotic simulation, researchers tested various ranges of motion in 18 thumb joints with different health statuses and measured osteophyte volume.
- Results indicated that increased osteophyte volume negatively impacts rotational mobility, particularly correlating decreased motion in extension and abduction with specific areas of osteophyte growth.
Article Synopsis
- The thumb carpometacarpal (CMC) joint's unique biomechanics, influenced by ligaments like the anterior oblique ligament (AOL) and dorsoradial ligament (DRL), enable its power and precision.
- This study examined the impact of cutting the AOL or DRL on thumb CMC joint biomechanics, including rotational and translational range-of-motion (ROM) and stiffness, using robotic simulations.
- Results showed that cutting the DRL increased rotational ROM in flexion and internal rotation, while cutting the AOL improved ROM in extension, indicating that both ligaments provide essential stabilizing functions for the thumb joint.
Article Synopsis
- The thumb carpometacarpal (CMC) joint allows complex movements of the thumb, crucial for gripping and precision tasks, but traditional measurements focused mainly on basic range-of-motion (ROM) in four directions.
- Researchers developed a method to measure the thumb's multidirectional motion in 6 degrees-of-freedom using a robotic simulation system on 10 specimens, going beyond basic ROM to include stiffness and combining multiple motion directions.
- The study revealed that thumb CMC joint movement is most flexible and least stiff in oblique directions, with specific coupling patterns during movements, enhancing our understanding of thumb mechanics for better treatment of pathologies.
Understanding the loads that occur across musculoskeletal joints is critical to advancing our understanding of joint function and pathology, implant design and testing, as well as model verification. Substantial work in these areas has occurred in the hip and knee but has not yet been undertaken in smaller joints, such as those in the wrist. The thumb carpometacarpal (CMC) joint is a uniquely human articulation that is also a common site of osteoarthritis with unknown etiology.
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