Sensory Recovery of Digital Nerves After Microsurgical Epineural Neurorrhaphy Alone or in Combination With Tisseel - RET

Inclusion Criteria: * Written consent to participate in the study * Acute digital nerve lesion(s) distal to the superficial arterial arch on one or more fingers that qualify for primary direct end-to-end microsurgical epineural neurorrhaphy * Age ≥18 years Exclusion Criteria: * Lesions that do not allow a tension-free direct suture, partial transections, amputation, re-vascularisation * Age \< 18 years * Pre-operation on the injured finger * Clinical comparison with contralateral finger not possible (e.g. due to amputation). * Treatment that is known to inhibit the growth/regeneration of nerves impaired or can cause neuropathy - such as chemo- or radiotherapy before or during the whole study * Systemic and local neurological impairments (polyneuropathy, diabetes mellitus, carpal tunnel syndrome, etc.) * History of vascular diseases like Raynaud's disease syndrome that affects blood flow or sensation in the upper can affect the extremities * Known or suspected non-compliance * Inability to follow the procedures of the study, e.g. due to language problems, psychological disorders, or dementia * Women who are pregnant (urin pregnancy test) or breast feeding. Female participants who are surgically sterilised / hysterectomised or post-menopausal for longer than 2 years are not considered as being of child bearing potential. * Previous enrolment into the current study * Enrolment of the investigator, his/her family members, employees and other dependent persons * Contraindicatio…