Hand Injury / Tendon and Nerve Repair | Splints, exercises and rupture prevention

After tendon repair surgery, the repaired tendon needs enough protection to avoid rupture, yet early controlled motion can enhance healing and reduce adhesion formation. Adhesions occur in about 20% of cases and rupture in about 3–9% after primary flexor tendon repair, so supervised hand therapy must be carefully tailored to the injury, repair strength, swelling and pain. A therapist can guide edema control, pain management, wound care, graded exercises, motivation and emotional support, while the surgeon’s notes guide safe progression. Without guided rehabilitation, stiffness, weakness or poorer function may persist. This coordination is essential to preserve hand function as fully as possible.

A strong repair supports early controlled motion, but the repaired tendon is most at risk of rupture during the first two weeks, especially the second week. Many repairs stay in a protective splint for about 2.5 weeks, then partial active finger flexion begins and progresses to full active flexion when no resistance is felt. Fracture fixation or vascular repair can change this timing; tension-free nerve repairs usually do not. Surgeon and therapist coordination is essential because early motion must protect the repair while limiting adhesions and preserving tendon gliding. The exact protocol depends on repair strength, associated injuries, and therapist guidance. Rehabilitation should be individualized by the treating team. Do not force movement through pain or resistance.

Flexor tendon rehabilitation is among the most researched areas; early controlled motion is preferred to immobilization, and postoperative day 4–5 is suggested when work of flexion is decreased. Wrist position matters: wrist flexion allows full finger extension with less flexor tension, while wrist extension allows full finger flexion with less repair tension. Extensor tendon studies are fewer, and many principles are derived or modified from flexor care. Extensor therapy also starts early, with edema control, protective splinting, and gradual tendon gliding; extension moves the tendon proximally and flexion moves it distally, while extensor muscles are generally weaker. Nerve rehabilitation includes sensorimotor re-education, bimanual tasks, and normal movement patterns for cortical remapping.

Adhesions form when a repaired tendon heals with restricted gliding. Immobilised lacerated tendons tend to heal with adhesions, especially around the tendon sheath. Their density relates to trauma to the tendon and surrounding tissues, intraoperative handling and mobilisation timing. Adhesions occur in roughly 20% of cases after tendon repair; formation appears multifactorial. Loose adhesions may be disrupted by postoperative motion, but moderate or dense adhesions are harder to alter. Early active mobilisation has been associated with stronger repairs and reduced adhesion formation, although the exact protocol depends on repair strength and injury severity. Nerve repair is separate; adhesion risk here mainly concerns tendon gliding. The most effective prevention described is meticulous surgery and early postoperative motion.

A strong surgical repair is the mechanical basis for early controlled motion, but forceful or resisted active finger flexion or extension can overload it. Rupture of a primary flexor tendon repair occurs in about 3–9% of cases and may happen from several days to six weeks after surgery, with the first two weeks—especially the second—most dangerous. Edema can make the tendon bulky and increase friction, while adhesions occur in about 20% of cases. Nerves are more complex than tendons and may not recover fully; severe injuries can need surgery, and nerve recovery advances at about 1 mm per day after repair.

Tendon repair must balance protection with motion: a strong repair allows earlier movement, while ragged or crushing injuries can cause swelling and adhesions. In zone 5, the protective splint is removed at 6 weeks; common problems include loss of full finger extension and fixed bent joints, with forearm splints used to regain extension gradually. Nerve injuries may need anticlaw devices later, and sensory re-education starts early. Children may need wrist and knuckle flexion for 3 weeks plus 1 week or 10 days; an incomplete cut needs 2 weeks; thumb tendon repair needs 5 weeks; fracture fixation needs 4 or 5 weeks; vascular repair delays motion 7 to 10 days; tension-free nerve repairs usually do not change timing.

After tendon and nerve repair, splinting protects healing structures and supports rehabilitation. Nerve injuries may require anticlaw devices in later stages, and sensory re-education begins early. Splints must not be used if they cause skin or eye injury through scratching or rubbing. Patients and carers should know the risks of pressure and restricted blood flow if splints are worn incorrectly. Regular splint monitoring and review is critical, and education should cover splint purpose, wearing regime, risks, estimated healing timeframes and resumed hand function, using demonstration, written instructions, photos or videos. Report any looseness, rubbing, numbness, colour change, swelling, or soreness promptly to your treating team. Do not adjust the splint yourself at

Rupture of a primarily repaired flexor tendon after hand tendon and nerve repair can occur from several days to six weeks after surgery, with the first two weeks—especially the second—being the most dangerous. It may follow forceful or resisted finger movement, tendon swelling, or triggering at pulleys. Diagnosis uses posture, manual tendon testing, or ultrasound. Nerve recovery may later need motor or sensory re-education. Decisions about re-repair involve the surgeon, therapist, and patient; earlier re-repair is generally favored, though the little finger needs special consideration. The exact cause or timing can be unclear, and infection or significant swelling may mask the problem.

Tendon repair needs protection early, then controlled motion to reduce adhesions; rupture risk is highest in the first two weeks. Source-supported timelines suggest light daily activities around six to eight weeks, normal hand use around eight to twelve weeks, and heavy lifting only after twelve weeks. For nerve repair without tendon injury, medium-loaded activities may start around six weeks and full loading around twelve weeks. Nerve recovery can remain incomplete despite good treatment. Your exact plan depends on injury zone, repair strength, associated fractures or vessels, and therapist guidance. Early active motion is used when repair strength allows, but protection remains essential.

Nerves usually grow about one inch each month, depending on age and other factors, so feeling may take up to one year after an injury above the fingertips. Pins and needles are common and usually pass. Temporary splints may keep joints properly aligned while waiting for nerve recovery. Rehabilitation must protect repaired tendons while allowing controlled motion, and coordination between surgeon and therapist is essential. Tendon injuries can profoundly affect hand function. Hypersensitive fingertips or scars may be managed with graded touch, texture and massage techniques repeated daily with patient education. Hand therapy carefully supports safe movement and protects repaired tendons during recovery after your surgery.