Resumen

VITERBO, Fausto; SALVIO, Ana Gabriela; GRIVA, Beatriz Lotufo  y  MACIEL, Fábio Oliveira. The embracing end-to-side neurorrhaphy in rats. Acta Cir. Bras. [online]. 2012, vol.27, n.3, pp. 260-265. ISSN 1678-2674.  http://dx.doi.org/10.1590/S0102-86502012000300010.

PURPOSE: Compare two new methods with the traditional end-to-side neurorrhaphy. METHODS: Rats were divided into four groups. In A-L group the peroneal nerve was sectioned and the distal stump was connected to the lateral of the tibial nerve (donor) with two 10-0 nylon points. In A-R group two perineurium flaps embraced the donor nerve. In the B-R group a suture embraced the donor nerve. Group B-L was the control. After six months tibial cranial muscle mass and morphometry of the distal stump of the peroneal nerve were evaluated. RESULTS: Muscle mass in groups A-R, A-L and B-R were lower than B-L group (p<0.0001) an equal between themselves (p>0.05). Groups A-R, B-R and A-L had a lower number of nerve fibers when compared with B-L (p=0.0155, p=0.016, p=0.0021). CONCLUSION: The three types of neurorrhaphy showed no differences related to muscle mass and number of nerve fibers suggesting that the embracing with a single suture has great potential due its simplicity and usefulness in deep areas.

Palabras llave : End-to-side neurorrhaphy; Embracing suture; Rats.