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Christopher Michael Frost, MD
Expertise: Hand Surgery, Plastic Surgery
Primary Location: Johns Hopkins Bayview Medical Center, Baltimore, MD
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Lily Mundy, MD
Expertise: Breast Surgery, Plastic Surgery
Primary Location: Johns Hopkins Outpatient Center, Baltimore, MD
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Rick Redett, MD
- Director, Plastic and Reconstructive Surgery
Expertise: Pediatric Plastic Surgery, Pediatric Craniofacial Plastic Surgery
Primary Location: Johns Hopkins Outpatient Center, Baltimore, MD
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Sami H. Tuffaha, MD
- Director, Peripheral Nerve Surgery
Expertise: Plastic Surgery
Primary Location: Johns Hopkins Outpatient Center, Baltimore, MD
Arm and shoulder injuries often impact your ability to fully use your limbs, and can make daily tasks difficult. Our experts specialize in the latest research-backed techniques that help restore function and comfort.
Surgical Expertise

Compassionate Care

Advanced Research

Multidisciplinary Approach

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Targeted Muscle Reinnervation (TMR) for Upper Extremities
TMR is a new surgical procedure that reassigns nerves that once controlled the arm and the hand. By reassigning existing nerves, doctors can make it possible for people who have had upper-arm amputations to control their prosethic devices by merely thinking about the action they want to perform. Once experimental, this innovative procedure is now available at The Johns Hopkins Hospital.
People who undergo the targeted reinnvervation surgery will be fitted with and trained to use a myoelectric prosthetic arm.
What To Expect
Those interested in the procedure to better control their prosthetic arm must undergo a medical review to determine their eligibility. In general, patients must meet the following criteria:
- Upper extremity or shoulder amputation
- Willing to participate in rehabilitation
Those who were born without part or all of their arm and those who have nerve damage, degeneration or paralysis are not candidates for this procedure.