Hand surgery is a surgical specialty focused on treating injuries, diseases, and deformities of the hand, wrist, and forearm. It covers everything from repairing broken fingers and reattaching severed digits to replacing arthritic joints and releasing compressed nerves. Rather than belonging to a single medical discipline, hand surgery sits at the intersection of orthopedic surgery and plastic surgery, with surgeons from both fields completing a one- to two-year fellowship specifically in hand and upper limb procedures.
Conditions That Lead to Hand Surgery
The range of problems treated by hand surgeons is broader than most people expect. Traumatic injuries like fractures, severed tendons, and amputated fingers are the most obvious reasons someone ends up in a hand surgeon’s office. But chronic and degenerative conditions are just as common. Carpal tunnel syndrome, where a nerve in the wrist gets compressed, is one of the most frequently performed hand procedures in the world. Trigger finger, where a finger locks in a bent position, and Dupuytren’s contracture, where thickened tissue pulls one or more fingers into a permanent curl, are also routine surgical cases.
Arthritis drives a significant share of hand surgery. Both osteoarthritis and rheumatoid arthritis can destroy the small joints in the fingers and wrist to the point where nonsurgical options no longer control pain or maintain function. Congenital hand differences, meaning structural problems present at birth, and deep hand infections round out the list of common reasons for surgical intervention.
Carpal Tunnel Release
Carpal tunnel release is worth discussing on its own because it’s the procedure most people associate with hand surgery. The operation involves cutting a band of tissue at the wrist to relieve pressure on the median nerve, which causes numbness, tingling, and weakness in the hand. It’s typically performed as an outpatient procedure, often under local anesthesia, and takes only minutes of actual surgical time.
Long-term studies consistently show clinical success rates between 75% and 90%. In one large review, about 78% of patients reported feeling at least 75% improved, and roughly 78% described themselves as satisfied with the outcome. Another long-term follow-up found that 72% of patients were completely free of symptoms at four years, while 94% described their hand as functionally normal. The surgery is highly effective, but it’s not a guarantee. A small percentage of patients, typically under 3%, report no change or worsening symptoms.
Nerve and Tendon Repair
When a hand injury damages nerves or tendons, the repair work is some of the most technically demanding surgery in any specialty. Nerves in the hand can be thinner than a strand of spaghetti, and reattaching them requires microsurgical instruments and high-powered magnification. The gold standard technique uses extremely fine sutures to hold the severed nerve ends together, a method that has been the benchmark for over 50 years.
Newer alternatives exist alongside traditional suturing. Fibrin glue can be applied around the reconnected nerve ends like a cocoon to hold them in place. Laser-assisted repairs use a protein solution applied to the nerve junction, then a laser to essentially “weld” it into a seal. Small tube-shaped nerve connectors can also bridge the gap between severed ends, with the nerve stumps placed into each side of the tube and secured with sutures. These techniques are not yet universal, but they give surgeons more options depending on the type and location of the injury.
Finger Replantation
Reattaching a severed finger is one of the most dramatic procedures in hand surgery. Success depends heavily on how the finger was lost, how long it’s been detached, and the patient’s age. Clean, sharp cuts have the best outcomes. Crush injuries and avulsion injuries, where the finger is torn away, fare considerably worse.
Time is critical. A severed finger can survive 6 to 12 hours at body temperature without blood flow. If the digit is properly cooled (wrapped in damp gauze, placed in a sealed bag on ice), that window extends to 12 to 24 hours. Replantation is almost always attempted for a severed thumb because the thumb accounts for such a large share of overall hand function. Multiple amputated digits are also strong candidates. For a single small finger or ring finger, the outcome of replantation may not be better than a clean surgical closure, so surgeons weigh the potential benefit carefully.
Children are treated more aggressively, with surgeons attempting replantation even in difficult cases. Kids generally regain good function and sensation over time, though initial survival rates for the reattached digit are actually lower than in adults because of the smaller structures involved and a higher risk of blood vessel spasm. Adults up to about age 70 have shown good survival of replanted digits. Beyond that age, results become less predictable.
Joint Replacement and Fusion for Arthritis
When arthritis destroys the joints in the hand or wrist, surgeons choose between two strategies: replacing the joint with an implant (arthroplasty) or permanently fusing the bones together (arthrodesis). The choice depends on which joint is affected and how much the surrounding ligaments can still support an implant.
The knuckle joints at the base of the fingers are typically good candidates for replacement, which preserves motion. Research has shown that surgical reconstruction benefits rheumatoid arthritis patients with knuckle joint deformity regardless of how advanced the deformity is. The thumb’s base joint is also commonly replaced rather than fused, since thumb mobility is essential for gripping and pinching. The small joints at the fingertips, however, are almost always fused rather than replaced. An implant at the fingertip can create instability that makes the finger less useful, not more.
Wrist replacement is an active area of development. Both patients and surgeons tend to prefer it over wrist fusion because it maintains some wrist motion. The trade-off is a higher risk of implant failure, particularly in rheumatoid arthritis patients whose bone quality may be compromised.
Wide-Awake Surgery Without Sedation
A significant shift in hand surgery over the past two decades is the rise of Wide-Awake Local Anesthesia No Tourniquet, or WALANT. Instead of putting patients under general anesthesia or using a nerve block with a tourniquet to control bleeding, the surgeon injects a local anesthetic mixed with a medication that constricts blood vessels directly into the surgical area. The patient stays fully awake with no sedation.
This approach has three practical advantages. First, it’s safer because it eliminates the risks of sedation and the discomfort of a tourniquet squeezing the upper arm. Second, it reduces cost since there’s no anesthesiologist, no IV medications, and no recovery room time for sedation to wear off. Third, and perhaps most valuable, the surgeon can ask the patient to move their fingers during the procedure. This is particularly useful during tendon repairs, where judging the correct tension is difficult without seeing the tendon work in real time. The patient actively bends and straightens their finger on the operating table, letting the surgeon confirm the repair before closing.
Risks and Complications
Infection is the most studied complication in hand surgery. A large meta-analysis of hand trauma surgeries found an overall surgical site infection rate of about 5%. The risk varies significantly by procedure type. Internal plate-and-screw fixation of fractures carries roughly a 2% infection rate, while temporary wire fixation runs closer to 7%. External fixation devices, which hold bones in place from outside the skin, have the highest infection rate at around 15%.
Stiffness is the other major concern. The hand’s tendons and joints are tightly packed, and even minor swelling or scarring can limit movement. This is why early, guided rehabilitation is considered just as important as the surgery itself.
Recovery and Hand Therapy
Recovery timelines vary widely depending on the procedure. Most patients have sutures removed around two weeks after surgery. Discomfort during those first two weeks is normal and typically manageable with over-the-counter pain medication within the first few days. Returning to work generally takes 6 to 14 weeks, though full recovery from more complex procedures can stretch beyond a year.
Rehabilitation is handled by occupational or physical therapists, and in many cases by a Certified Hand Therapist (CHT). These specialists have completed at least 4,000 hours treating hand and upper extremity conditions over a minimum of three years, followed by a certification exam. They recertify every five years. Hand therapists design custom splints (sometimes called orthoses) molded specifically to your hand, manage swelling and scar tissue, and guide you through progressive exercise programs to restore range of motion and strength. The quality of rehabilitation has an outsized influence on the final outcome, often making the difference between a hand that moves freely and one that stays stiff.