Knoxville residents now have an additional option for treating painful thumb arthritis thanks to a new joint‑replacement procedure offered by Tennessee Orthopaedic Alliance (TOA). Dr. Kent Rinehart performed the first TOUCH CMC 1 Thumb Joint Replacement on September 14, 2026 at the Fort Sanders campus, marking the first use of this implant in the state.
How the new implant differs
The TOUCH CMC 1 prosthesis, manufactured by KeriMedical, replaces the damaged joint at the base of the thumb while preserving more of the surrounding bone and soft tissue than traditional surgical approaches. Conventional surgery often removes a small bone segment and can require three to six months of rehabilitation. According to TOA, patients receiving the new implant may experience a shorter recovery timeline, though exact results vary by individual.
Who may benefit
The procedure is intended for adults with persistent thumb carpometacarpal (CMC) osteoarthritis who have not found sufficient relief from non‑surgical measures such as medication, splinting, activity modification, or injections. Dr. Rinehart was selected to offer the technology based on his clinical expertise, professional reputation, and patient volume.
Limitations and risks
Not every patient is a candidate. Those with severe bone loss, certain wrist joint conditions, or occupations that demand heavy manual labor may not be suitable for the implant. As with any joint replacement, potential complications include implant loosening or dislocation, fracture of surrounding bone, nerve irritation or numbness, and the possibility of additional surgery.
Regulatory background
The TOUCH CMC 1 prosthesis received pre‑market approval from the U.S. Food and Drug Administration on July 10, 2025. TOA supplied this information as part of the announcement.
What patients should do next
Individuals whose thumb arthritis interferes with daily activities—such as opening jars, turning keys, gripping objects, or writing—are encouraged to discuss this option with an orthopedic specialist. For more information, patients can contact Tennessee Orthopaedic Alliance directly.
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Original reporting: Knox TN Today — read the source article.
