Hand Injury / Tendon and Nerve Repair | Function and secondary surgery

Tendon repairs need enough strength for early motion but minimal resistance to gliding. Immobilized tendons can heal with adhesions that limit motion, so controlled movement matters. Passive motion loads tend to be small, and in one animal study of 60% tendon lacerations, active rehabilitation increased gapping compared with passive rehabilitation. The most extreme active flexion carries greatest risk of disrupting repair; partial active flexion may reduce overload and discomfort. Nerve injuries may need motor or sensory re-education. Your surgeon and therapist tailor progression to healing stage, injury mechanism, swelling and repair strength. Early combined passive-active motion can be ideal, with passive motion preceding active motion to lessen resistance to tendon gliding.

Scar adhesions can stop a tendon from gliding even when the repair is intact, so the key clue is greater passive than active range of motion. Waiting about 3 months, and often 4–6 months, lets the wound soften and adhesions remodel; operating earlier may jeopardize tendon blood supply and raise rupture risk. The best candidates have limited active but full passive motion, supple tissues and localized adhesions. Extensive adhesions, joint contracture, age over 40, or prior nerve repair or graft are linked with poorer outcomes. Therapy should usually continue until no improvement for about 6 weeks before considering surgery; after tenolysis, immediate mobilization is needed, and joint contracture may require separate release.

Tendon repair must be strong enough for early motion while allowing gliding, because swelling and adhesions can limit movement. Clean, simple injuries may allow more confident active therapy, while crushing or multi-structure injuries can cause more swelling and adhesion. Rehabilitation generally progresses over two to three months to address flexibility and strength. After extensor tendon repair, light work and driving may resume from eight weeks, and heavy lifting or contact sports from twelve weeks. For tendon transfer, patients often learn to use the new hand during the first postoperative year, with function becoming more automatic as repetition and neural plasticity are realized. Individual recovery varies with injury severity, repair quality, and therapy adherence; your surgeon and therapist will guide progression.

Tendon repair needs protection and controlled early motion to enhance healing and function, while nerve recovery depends on complex regeneration and may leave some permanent dysfunction despite optimal treatment. Simultaneous nerve and tendon injuries are common and not a contraindication to primary repair. Delayed repair can cause adhesions and tendon shortening, affecting expectations. Rehabilitation after nerve surgery is critical, including motor retraining and cortical remapping after transfers. Hand therapy supports motor rehabilitation and cortical remapping after nerve transfer surgery. Severe nerve injuries may need surgery for meaningful recovery. Recovery timelines vary by injury severity and repair conditions, so individual assessment guides realistic goals. Recovery is individualized.

Nerves recover less reliably than tendons, ligaments or bones, and many nerve injuries leave some permanent dysfunction despite optimal treatment. Without protective sensation, the brain may exclude the insensate digit or hand from functional use, limiting tendon transfer benefit. Vision can partly compensate only when the hand is visible; it fails in darkness or when searching in a bag or pocket. For median nerve injuries, sensory recovery after repair has been relatively poor, with better results reported for lower-level than higher-level injuries. Eyesight cannot replace feeling for fine tasks or safety. The exact outlook depends on injury level and associated damage. Rehabilitation therefore protects joints, skin and scars while waiting.

Stiffness can develop even with appropriate care, and stiff fingers can limit a successful recovery program. A joint may be released and rebalanced when contractures inhibit function, particularly at the PIP or MCP joints. Indications include failure to become supple after physiotherapy, or direct joint injury causing dislocation, subluxation, or damaged joint surfaces. When multiple structures are injured, procedures needing immobilization and those needing immediate mobilization should not be combined. Strong tendon repair and careful therapy aim to prevent stiffness, because rubber-band traction can contribute to palmar ligament contracture. Severe trauma with swelling and adhesions after repair can also worsen stiffness. Rehabilitation should progress over several months with supervised therapy.

Tendon repair needs protection from disruption while controlled motion supports healing and function, so therapy is phased and coordinated with the surgeon. Tendon injuries can profoundly affect hand function, and appropriate therapy is essential to preserve function. Nerve recovery is slower and less predictable than tendon, ligament or bone healing; some permanent dysfunction can remain despite optimal treatment. Nerve recovery advances at about 1 mm per day, so distance and timing matter. Rehabilitation after nerve injury includes retraining sensation and movement, while bimanual and purposeful self-care, recreation and work tasks help resume normal activity. Vocational rehabilitation may be needed for employment planning.

Nerves usually grow about one inch monthly, so feeling may take up to a year to return to fingertips after an arm injury; tingling is common during recovery. Combined injuries often also involve vessels or fractures, and extensive damage may require careful wound cleaning before repair. Tendon repair carries reported rupture risk of about 3–9% and adhesion risk around 20%; adhesions may need tenolysis after 3–6 months. Rehabilitation includes sensorimotor re-education and graded strengthening. In one described tendon-transfer protocol, strengthening begins around eight weeks and unrestricted activity around twelve weeks, but individual plans vary. Ideally, nerve repair at injury time permits motor and sensory recovery over time; sensory nerve transfers can restore protective sensation.

If rupture occurs within a few weeks up to a month after surgery, re-repair may be possible; with obvious retraction, secondary tendon grafts may be the only choice. Reconstruction is generally considered when overall hand function may improve, and stable skin coverage, skeletal alignment, sensation and supple joints support tendon work. Nerves recover less well than tendons, so some permanent dysfunction can remain despite optimal treatment. Dr. Vishal Purohit can discuss timing, grafting and realistic function during consultation in Jaipur. Rehabilitation and surgeon-therapist coordination, along with the hand therapist, also influence whether further surgery is worthwhile. Each case needs careful individual assessment of tissue quality, goals and expected recovery and patient priorities.