The full spectrum — from trigger thumb to total reconstruction.

The brachial plexus is the network of nerves carrying movement and feeling from the spine into the arm and hand. In some deliveries these nerves are stretched, and a newborn moves one arm less than the other. Many babies recover fully — but the window for nerve surgery is limited, so early evaluation protects every option.

How it's treated: Serial exams and guided therapy come first. If key movements don't return on schedule, microsurgical nerve grafting or nerve transfers can restore function, with tendon transfers and shoulder procedures available as children grow.

Cerebral palsy can make the muscles of the arm and hand overactive and tight, pulling the elbow, wrist, or thumb into positions that make grasping, dressing, and hygiene difficult. Many families are told nothing can be done — that is rarely true.

How it's treated: Goal-directed care ranges from therapy and splinting to modern nerve procedures (selective neurectomy) and tendon transfers that reduce tightness, improve hand position and grasp, and ease daily care — with options at nearly any age.

One of the most common congenital hand differences: two or more fingers joined by skin, and sometimes bone. It happens early in pregnancy and is no one's fault.

How it's treated: Surgical separation, usually with a small skin graft, timed to your child's growth — often in the first one to two years, and earlier when the thumb or border fingers are involved. Scar care and, when needed, hand therapy help each finger move independently.

An extra finger or thumb, ranging from a small skin tag to a fully formed digit — it often runs in families. Extra thumbs deserve special planning, because the thumb does half the hand's work.

How it's treated: From a minor outpatient procedure for small tags to reconstruction that combines the best parts of a duplicated thumb into one strong, stable thumb.

Some children are born with a small, unstable, or absent thumb — sometimes alongside a shorter, curved forearm. Because these differences can be associated with other conditions, a whole-child evaluation matters.

How it's treated: Options range from stabilizing and rebuilding the existing thumb to pollicization — surgically rebuilding the index finger into a working thumb. Planning ideally starts in infancy so families can choose timing together.

A common toddler finding: the thumb clicks, locks, or stays bent at the tip because the tendon develops a small nodule that catches in its tunnel. It isn't caused by injury, and it isn't painful for most children.

How it's treated: Some resolve with observation and stretching. When locking persists, a brief outpatient release solves it reliably — most children use the hand normally within days.

Children's bones are still growing, and many fractures involve the growth plate — the engine of future growth. Kids' fractures deserve pediatric-specific judgment, not scaled-down adult care.

How it's treated: Most heal beautifully in a cast; some need precise realignment or fixation. When a fracture has healed crooked or failed to heal, reconstructive surgery can restore alignment, motion, and growth.

Cuts and crush injuries can divide the nerves and tendons that power the hand — structures often just millimeters wide in a child. Repair is time-sensitive: outcomes are best when injuries are recognized and treated early.

How it's treated: Microsurgical repair under the operating microscope, with nerve grafts or transfers when a gap must be bridged, followed by structured therapy to rebuild motion and strength.

Before birth, strands of the amniotic membrane can wrap around developing fingers, hands, or arms — leaving deep grooves, swelling beyond the band, joined fingertips, or shortened digits. Severity varies widely, from a shallow ring to tissue at real risk.

How it's treated: Band release with careful reconstruction of the soft-tissue contour — sometimes staged — along with separation of joined fingertips and procedures to improve length or function where needed.

Two common causes of a bent little finger: camptodactyly is a flexion bend at the middle joint, while clinodactyly is a sideways curve, usually near the fingertip. Many are mild, painless, and simply part of how a child is made.

How it's treated: Mild curves are observed or splinted, especially through growth spurts. Progressive or function-limiting cases can be corrected with soft-tissue release, tendon rebalancing, or a small growth-guiding or realigning bone procedure.

A condition present at birth in which multiple joints are stiff and some muscles underdeveloped. In the arms this often means straight, stiff elbows, flexed wrists, and thumbs held in the palm — making feeding, dressing, and self-care harder.

How it's treated: Therapy and stretching lead. Surgery is aimed at specific goals — releasing and rebalancing the wrist and thumb, or restoring elbow bend with muscle and tendon transfers — so independence gets measurably easier.

Lumps and bumps of the hand range from common fluid-filled ganglion cysts to abnormal clusters of blood or lymph vessels present from birth, and rare bone or soft-tissue tumors. Most are benign — but the hand is unforgiving territory, so expert evaluation matters.

How it's treated: Options include observation, coordinated sclerotherapy, or precise surgical removal that protects nearby nerves and vessels — with microsurgical reconstruction when structures must be rebuilt.