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1.
J Surg Orthop Adv ; 33(2): 80-83, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-38995062

RESUMO

The purpose of this study was to compare two sources of nerve graft for brachial plexus reconstruction: the denervated superficial branch of the radial nerve (SBRN) and the sural nerve. Ninety-seven patients who underwent brachial plexus reconstruction with denervated SBRN nerve (24 patients with 24 grafts) or with sural nerve grafting (73 patients with 83 nerve grafts) were included. The two groups were compared with respect to postoperative muscle reinnervation, disabilities of the arm, shoulder, and hand (DASH) scores. In the SBRN group, only four (17%) of the nerve grafts provided grade III or higher muscle function. In the sural nerve group, 31 (37%) of the nerve grafts provided grade III or higher muscle function. Smoking had a negative impact on muscle recovery. Denervated SBRN grafts are associated with inferior outcomes when compared with sural nerve grafts in the treatment of traumatic adult brachial plexus injuries. (Journal of Surgical Orthopaedic Advances 33(2):080-083, 2024).


Assuntos
Plexo Braquial , Nervo Radial , Nervo Sural , Humanos , Nervo Sural/transplante , Adulto , Masculino , Feminino , Plexo Braquial/lesões , Plexo Braquial/cirurgia , Nervo Radial/lesões , Nervo Radial/cirurgia , Pessoa de Meia-Idade , Estudos Retrospectivos , Adulto Jovem , Transferência de Nervo/métodos , Recuperação de Função Fisiológica
2.
Acta Chir Plast ; 66(2): 86-89, 2024.
Artigo em Inglês | MEDLINE | ID: mdl-39174344

RESUMO

INTRODUCTION: Isolated musculocutaneous nerve injuries occur rarely due to their anatomical location. We present our patient with a musculocutaneous nerve injury in a motorcyclist. CASE: The patient was initially treated for a motorcycle accident. Further examination of the patient revealed impaired elbow flexion and numbness of the lateral forearm. Electromyography confirmed impaired function of the musculocutaneous nerve. After 3 months, the patient's condition did not show any improvement, neither electromyography confirmed recovery of the nerve activity, so surgical treatment was planned. In the surgical revision, neuroma-in-continuity was discovered and resected. The resulting nerve defect was 6 cm long. We provided nerve grafting using sural nerve from the right lower limb. After surgery, the patient began physical therapy and electrical stimulation. Two years later, the patient reached complete recovery of muscle strength. CONCLUSION: Due to the lack of improvement after a 3-month period, we proceeded with a surgical revision, which demonstrated a complete lesion of the nerve that could not heal spontaneously. Therefore, we opted for the nerve graft method and the patient regained full function of elbow flexors.


Assuntos
Acidentes de Trânsito , Motocicletas , Nervo Musculocutâneo , Humanos , Nervo Musculocutâneo/lesões , Nervo Musculocutâneo/cirurgia , Masculino , Adulto , Traumatismos dos Nervos Periféricos/cirurgia , Nervo Sural/transplante
3.
Medicina (Kaunas) ; 60(9)2024 Sep 20.
Artigo em Inglês | MEDLINE | ID: mdl-39336573

RESUMO

Following nipple-sparing mastectomy (NSM), patients commonly experience significant impairment or total loss of nipple sensitivity, which negatively impacts the patients' quality of life, whereas patients who retain nipple sensation postoperatively experience enhanced physical, psychosocial, and sexual well-being. Reinnervation techniques such as nerve allografting have been utilized to retain sensation. Despite the benefits of nerve allografts, such as lack of donor site morbidity, ease of use, and potentially shorter surgery time, there are shortcomings, such as the cost of commercially available acellular nerve allografts, and, most importantly, decreased sensory and motor function recovery for acellular nerve allografts with a diameter greater than 3 mm or a length greater than 50 mm. We present a technique where we performed immediate implant-based breast reconstruction combined with nipple-areola complex reinnervation using an autologous nerve graft. Following the procedure, the patient had improved sensory outcomes in the reconstructed breast and good quality-of-life indices. This report highlights the potential for sural nerve autografts in restoring breast sensation following mastectomy.


Assuntos
Mamoplastia , Mamilos , Nervo Sural , Humanos , Feminino , Mamilos/inervação , Mamilos/cirurgia , Nervo Sural/transplante , Nervo Sural/fisiologia , Mamoplastia/métodos , Pessoa de Meia-Idade , Qualidade de Vida , Neoplasias da Mama/cirurgia , Mastectomia/métodos , Mastectomia/efeitos adversos , Adulto , Resultado do Tratamento
4.
J Hand Surg Am ; 48(11): 1173.e1-1173.e7, 2023 11.
Artigo em Inglês | MEDLINE | ID: mdl-37923488

RESUMO

PURPOSE: The sural nerve is the autologous nerve used most commonly for grafting. However, recent studies indicate a high rate of complications and complaints after sural nerve removal. In this prospective study, we evaluated donor-site morbidity following full-length sural nerve harvesting on long-term follow-up. METHODS: Fifty-one legs from 43 patients who underwent complete sural nerve harvesting for brachial plexus reconstruction were included in the study. After an average of 5 years, with a minimum postoperative follow-up of 12 months, sensory deficits in the leg and foot were analyzed using 2.0-g monofilaments. Regions of sensory deficit were marked with a skin marker and photographed. Over these regions of decreased sensation, we tested nociception using an eyebrow tweezer. Patients were also asked about pain, cold intolerance, pruritis, difficulties walking, and foot swelling. RESULTS: Regions most affected (84% of patients) were over the calcaneus and cuboid. However, in these regions, nociception was preserved. Regions of decreased sensation extended to the calf region in 11 of 51 legs. In 13 patients, we also observed regions of decreased sensation on the proximal leg. In five feet, the sensation was entirely preserved. No patient had any complaints about pain, cold intolerance, itchiness, difficulties walking, or foot swelling. CONCLUSION: Decreased sensation with nociception preserved was most common along the lateral side of the foot over the calcaneus and cuboid. Removing the entire sural nerve produced no long-term complaints of pain. Sural nerve use appears safe. TYPE OF STUDY/LEVEL OF EVIDENCE: Therapeutic II.


Assuntos
Sensação , Nervo Sural , Humanos , Nervo Sural/transplante , Estudos Prospectivos , Sensação/fisiologia , Dor , Morbidade
5.
Microsurgery ; 43(8): 818-822, 2023 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-37226423

RESUMO

INTRODUCTION: Sural nerve harvest causes paraesthesia to the lateral heel of the foot, which can debilitate those with already compromised proprioception. To circumvent this, we investigated an alternative donor nerve, branch of the lateral sural nerve complex called the sural communicating nerve (SCoNe), for its harvest and use as a vascularized nerve graft, in cadaver. METHODS: The SCoNe was visualized by dissection in 15 legs from 8 human cadavers and the relationship of the SCoNe to the overall sural nerve complex was documented. The surface markings, dimensions, and the micro-neurovascular anatomy in the super-microsurgery range (up to 0.30 mm) of the SCoNe was recorded and analyzed. RESULTS: SCoNe graft surface marking was confined within a triangle drawn between the fibular head laterally, the popliteal vertical midline medially and the tip of the lateral malleolus inferiorly. The proximal end of the SCoNe was situated at a mean intersection distance of 5 cm from both the fibular head and popliteal midline respectively. The mean length of the SCoNe was 226 ± 43 mm with a mean proximal diameter of 0.82 mm and mean distal diameter of 0.93 mm. In 53% of the cadavers, an arterial input was present in the proximal third of the SCoNe and veins were predominantly (87%) present in the distal third. In 46% and 20% of the 15 legs respectively, there was a nutrient artery and vein perfusing the SCoNe in its central segment. The external mean diameter of this artery was 0.60 ± 0.30 mm, while the vein was slightly larger with a mean diameter of 0.90 ± 0.50 mm. DISCUSSION: SCoNe graft may preserve lateral heel sensation, compared to sural nerve harvest, pending clinical studies. It may have wide applications as a vascularized nerve graft, including being ideal as a vascularized cross-facial nerve graft because its nerve diameter is similar to the distal facial nerve branches. The accompanying artery is a good anastomotic match to the superior labial artery.


Assuntos
Perna (Membro) , Nervo Sural , Humanos , Nervo Sural/transplante , Nervos Periféricos , Extremidade Inferior , Cadáver
6.
Microsurgery ; 42(8): 824-828, 2022 Nov.
Artigo em Inglês | MEDLINE | ID: mdl-36177748

RESUMO

Segmental loss of the sciatic nerve secondary to oncologic resection or trauma is detrimental to hamstring and leg function. The diameter of this nerve and the length of its axons spanning the lower extremity create significant challenges in reconstruction and optimizing return of sensory or motor function. The purpose of this report is to describe outcomes of a free vascularized sural nerve graft to preserve hamstring function in a large proximal sciatic nerve defect beginning at the greater sciatic foramen. A 44-year-old female underwent neoadjuvant chemotherapy and radiation for treatment of a left sciatic nerve synovial cell sarcoma. The patient underwent R0 resection of the proximal left sciatic nerve resulting in a 15 cm defect. An ipsilateral vascularized sural nerve graft was used to reconstruct the medial aspect of the sciatic nerve, prioritizing the tibial division, in an effort to restore hamstring function and plantar sensation. A 5 cm allograft nerve was added to the cutaneous branches of the sural nerve graft to better span the large defect and reconstruct the lateral aspect of the nerve. The patient's postoperative course was uneventful. At 1-year follow-up, the patient showed MRC grade 4/5 strength with knee flexion and steady gait pattern with a left ankle-foot orthosis. Outcomes support the use of a single vascularized nerve graft alongside acellular nerve allograft to restore motor function in large diameter and large defect mixed nerve injuries.


Assuntos
Nervo Isquiático , Nervo Sural , Feminino , Humanos , Adulto , Nervo Sural/transplante , Autoenxertos , Nervo Isquiático/cirurgia , Nervo Isquiático/lesões , Extremidade Inferior , Aloenxertos
7.
Ann Chir Plast Esthet ; 67(2): 93-100, 2022 Mar.
Artigo em Francês | MEDLINE | ID: mdl-34583875

RESUMO

BACKGROUND: The neurocutaneous sural flap is useful to cover defects of the distal quarter of the lower limb. Nevertheless, severe complications occur in 14% of the cases, and venous congestion is reported in 75% of these cases. This congestion can lead to total necrosis of the flap and a failure of the procedure. We describe a new surgical method aiming to reduce the risk of venous congestion occurrence and failure of the defect coverage. PATIENTS AND METHODS: We realized a retrospective study of patients who undergone a de-epidermized distally based neurocutaneous sural flap in our surgery department from 2015 to 2020. The following data were collected: sex, age, vascular risk factors, size of the wound, defect area, etiology, delay between the surgery of the flap and the split-thickness skin graft and complications. RESULTS: The cohort is composed of 5 cases. We reported no failure of the coverage of the defect. There were no cases of venous congestion. CONCLUSION: The de-epidermized distally based neurocutaneous sural flap could increase the reliability of these flaps by reducing the risk of venous congestion. A larger study comparing the classic technique to the de-epidermized sural flap could confirm these data on a greater number of cases and position this technique in the therapeutic arsenal.


Assuntos
Hiperemia , Procedimentos de Cirurgia Plástica , Lesões dos Tecidos Moles , Humanos , Hiperemia/cirurgia , Procedimentos de Cirurgia Plástica/métodos , Reprodutibilidade dos Testes , Estudos Retrospectivos , Lesões dos Tecidos Moles/cirurgia , Nervo Sural/transplante , Retalhos Cirúrgicos/irrigação sanguínea
8.
BMC Surg ; 21(1): 32, 2021 Jan 08.
Artigo em Inglês | MEDLINE | ID: mdl-33419427

RESUMO

BACKGROUND: Early surgical repair to restore nerve integrity has become the most commonly practiced method for managing facial nerve injury. However, the evidence for the efficacy of surgical repair for restoring the function of facial nerves remains deficient. This study evaluated the outcomes of surgical repair for facial nerve lesions. METHODS: This retrospective observational study recruited 28 patients with the diagnosis of facial nerve injury who consecutively underwent surgical repairs from September 2012 to May 2019. All related clinical data were retrospectively analyzed according to age, sex, location of the facial nerve lesion, size of the facial nerve defect, method of repair, facial electromyogram, and blink reflex. Facial function was then stratified with the House-Brackmann grading system pre-operation and 3, 9, 15, and 21 months after surgical repair. RESULTS: The 28 patients enrolled in this study included 17 male and 11 female patients with an average age of 34.3 ± 17.4 years. Three methods were applied for the repair of an injured facial nerve, including great auricular nerve transplantation in 15 patients, sural nerve grafting in 7 patients, and hypoglossal to facial nerve anastomosis in 6 patients. Facial nerve function was significantly improved at 21 months after surgery compared with pre-operative function (P = 0.008). Following surgical repair, a correlation was found between the amplitude of motor unit potential (MUP) and facial nerve function (r = -6.078, P = 0.02). Moreover, the extent of functional restoration of the facial nerve at 21 months after surgery depended on the location of the facial nerve lesion; lesions at either the horizontal or vertical segment showed significant improvement(P = 0.008 and 0.005), while no functional restoration was found for lesions at the labyrinthine segment (P = 0.26). CONCLUSIONS: For surgical repair of facial nerve lesions, the sural nerve, great auricular nerve, and hypoglossal-facial nerve can be grafted effectively to store the function of a facial nerve, and MUP may provide an effective indicator for monitoring the recovery of the injured nerve.


Assuntos
Traumatismos do Nervo Facial/cirurgia , Nervo Facial , Paralisia Facial , Adolescente , Adulto , Anastomose Cirúrgica , Plexo Cervical/cirurgia , Nervo Facial/cirurgia , Traumatismos do Nervo Facial/complicações , Paralisia Facial/etiologia , Paralisia Facial/cirurgia , Feminino , Humanos , Nervo Hipoglosso/transplante , Masculino , Pessoa de Meia-Idade , Recuperação de Função Fisiológica , Estudos Retrospectivos , Nervo Sural/transplante , Resultado do Tratamento , Adulto Jovem
9.
Turk J Med Sci ; 51(2): 473-482, 2021 04 30.
Artigo em Inglês | MEDLINE | ID: mdl-32718120

RESUMO

Background/aim: The aim of the present study was to determine the course and possible variations of the sural nerve with all anatomical details in human fetal cadavers. Materials and methods: This study was performed on 60 fetal cadavers. Formation type and level of the sural nerve was detected. Results: According to trimesters, it was determined that the mean transverse and vertical distance between the lowest point of the LM and the SN varied between 1.1 and 2.9 mm and 1.54 and 3.58 mm, respectively. Type 2 was the most common seen type of sural nerve (35.83%). It was determined that the sural nerve was mostly formed at the middle third of the leg (42.5%). Conclusion: Sural nerve graft with the knowledge of the anatomical details may be used for peripheral nerve reconstruction is required in congenital lesions, such as facial paralysis, obstetric brachial paralysis, and posttraumatic lesions in infants and children.


Assuntos
Cadáver , Feto/anatomia & histologia , Perna (Membro)/anatomia & histologia , Nervo Sural/anatomia & histologia , Criança , Dissecação/métodos , Feminino , Idade Gestacional , Humanos , Lactente , Perna (Membro)/inervação , Masculino , Traumatismos dos Nervos Periféricos/cirurgia , Gravidez , Trimestres da Gravidez , Procedimentos de Cirurgia Plástica , Nervo Sural/transplante
11.
Eur J Orthop Surg Traumatol ; 29(4): 893-898, 2019 May.
Artigo em Inglês | MEDLINE | ID: mdl-30535642

RESUMO

INTRODUCTION: Damage to the common peroneal nerve is the most frequent nerve injury in lower limb traumas. Our objective was to assess the motor and sensory recovery levels and the functional outcomes after remedial surgery for common peroneal nerve trauma, through either neurolysis, direct suture or nerve graft. METHODS: This is a transversal, observational study of a monocentric cohort of 20 patients who underwent surgery between January 2004 and June 2016, which included 16 men and 4 women whose median age was 35 ± 11 years. We assessed the level of sensory and motor nerve recovery and the Kitaoka score. Nine patients benefited from neurolysis, 5 had direct sutures, and 6 received a nerve graft. RESULTS: With 48 months' average follow-up, 7 out of 9 patients underwent neurolysis and 4 out of 5 with direct sutures had good motor recovery (≥ M4), but none for the grafts. Sensory recovery (≥ S3) was satisfactory in 7 out of 9 cases in the neurolysis group, 3 out of 5 in the direct suture group, and 3 out of 6 in the nerve graft group. The average Kitaoka score was 83.7 ± 11.5 for the neurolysis group, 86.8 ± 16 for the direct suture group, and 73 ± 14 for the graft group. CONCLUSION: Surgical treatment by neurolysis and direct suture yields good results with a motor recovery ratio nearing 80%. When a nerve graft becomes necessary, recovery is poor and resorting to palliative techniques in the shorter run is a strategy which should be evaluated.


Assuntos
Procedimentos Neurocirúrgicos , Traumatismos dos Nervos Periféricos/cirurgia , Nervo Sural/transplante , Suturas , Adulto , Estudos Transversais , Feminino , Seguimentos , Humanos , Masculino , Recuperação de Função Fisiológica
13.
Ann Plast Surg ; 80(4): 379-383, 2018 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-29389699

RESUMO

BACKGROUND: Vascularized nerve grafting is normally associated with a good outcome, but can be difficult to use for nerve reconstruction in patients with long defects of the sciatic nerve given the graft thickness. We report 3 cases of large defect sciatic nerve reconstruction using the bilateral sural nerves of the lower legs harvested together with the fascia and lesser saphenous vein to form a vascularized flap. METHODS: The subjects were 3 patients who required the reconstruction of a 10-cm or longer segment of the sciatic nerve. Priority was given to restoring sensation in the plantar region such that reconstruction of the sensory nerves corresponding to the tibial region. RESULTS: Two patients were followed up for long term. There was some persistent perceptual deficit in the foot, minimal protective sensation had been achieved. CONCLUSIONS: We were able to selectively reconstruct the sensory nerves to achieve sensation in the soles of the feet by using sural nerve grafts from both legs. As the prognosis for the underlying condition in cases necessitating this procedure is often poor, the costs and benefits of reconstruction should always be weighed carefully for each individual patient.


Assuntos
Neoplasias Ósseas/cirurgia , Extremidade Inferior/inervação , Extremidade Inferior/cirurgia , Neoplasias de Bainha Neural/cirurgia , Osteossarcoma/cirurgia , Procedimentos de Cirurgia Plástica/métodos , Nervo Isquiático/cirurgia , Nervo Sural/transplante , Retalhos Cirúrgicos/irrigação sanguínea , Retalhos Cirúrgicos/inervação , Adolescente , Evolução Fatal , Humanos , Masculino , Pessoa de Meia-Idade
14.
J Hand Surg Am ; 43(12): 1140.e1-1140.e6, 2018 Dec.
Artigo em Inglês | MEDLINE | ID: mdl-29903542

RESUMO

PURPOSE: To report the results of radial nerve grafting in 7 children who sustained a radial nerve injury following a distal humeral fracture. METHODS: Seven children, mean age 6 years (range, 4-11 years), underwent nerve grafting for radial nerve injuries following distal humeral fractures. The mean interval between injury and surgery was 6.7 months (range, 6-9 months). In all cases, 3 sural nerve graft cables were used, of mean length 8.6 cm (range, 6-12 cm). Mean follow-up was 19.9 months (range, 12-24 months). Wrist, finger, and thumb extension range of motion and strength were evaluated at final follow-up, using the British Medical Research Council (BMRC) rating scale. RESULTS: The radial nerve was entrapped within the fracture site in 2 patients, and in 5, it was completely interrupted without entrapment. All patients obtained full active wrist extension with grade M4 BMRC strength. For finger extension, all patients were graded as M4, obtaining full metacarpophalangeal finger and thumb extension, with the wrist in neutral in 3 patients and fully extended in 4. During the thumbs-up test, 4 patients achieved complete extension of all thumb joints, and 3 exhibited metacarpophalangeal extension lag, averaging 30°. CONCLUSIONS: Nerve grafting of radial nerve injuries at the level of the distal humerus in children can yield excellent outcomes. TYPE OF STUDY/LEVEL OF EVIDENCE: Therapeutic V.


Assuntos
Fraturas do Úmero/cirurgia , Nervo Radial/lesões , Nervo Radial/cirurgia , Nervo Sural/transplante , Criança , Pré-Escolar , Feminino , Seguimentos , Força da Mão , Humanos , Masculino , Amplitude de Movimento Articular , Recuperação de Função Fisiológica , Estudos Retrospectivos
15.
Microsurgery ; 38(4): 375-380, 2018 May.
Artigo em Inglês | MEDLINE | ID: mdl-29125661

RESUMO

BACKGROUND: To reanimate the mimetic muscles, crossface nerve graft (CFNG) is an effective surgical option. However, muscle atrophy after facial paralysis may influence the surgical result. We analyzed the relationship between surgical result and preoperative paralysis duration. METHODS: We performed CFNG on 15 patients. The sural nerve was transferred between the affected and nonaffected sides of the zygomatic branch. Eyelid function and eyelid lid were evaluated using the modified House-Brackmann scale. The effects of age, sex, cause of facial paralysis, graft nerve length, and preoperative paralysis duration were evaluated. RESULTS: The mean follow up period was 9.3 ± 3.3 (range 4-14) years. Eyelid closure was excellent in four patients, good in six, fair in one, and poor in four. Statistically, no significant difference was observed between those patients with excellent or good outcomes and fair or poor outcomes regarding age (40.9 ± 11.0 years vs. 22.6 ± 20.8; P = .067), sex (male/female = 2/8 vs. 3/2; P = .250), cause (tumor/trauma = 10/0 vs. 3/2; P = .095), and length of nerve graft (14.4 ± 0.8 cm vs. 13.8 ± 1.6 cm; P = .375). The average preoperative paralysis duration in the excellent/good patients was significantly shorter than that in the fair/poor patients (P = .005). All eight cases with preoperative paralysis of less than 6 months showed a marked excellent/good result. Two of the seven patients with preoperative paralysis was 6 months or longer marked fair/poor result. (P = .007). CONCLUSIONS: To achieve successful results with CFNG, surgery should be performed within 6 months of the onset of paralysis.


Assuntos
Pálpebras/inervação , Pálpebras/fisiopatologia , Músculos Faciais/inervação , Paralisia Facial/cirurgia , Transferência de Nervo/métodos , Nervo Sural/transplante , Adolescente , Adulto , Criança , Estudos de Coortes , Paralisia Facial/etiologia , Paralisia Facial/fisiopatologia , Feminino , Humanos , Masculino , Pessoa de Meia-Idade , Resultado do Tratamento , Adulto Jovem
16.
BJU Int ; 119(6): 948-954, 2017 06.
Artigo em Inglês | MEDLINE | ID: mdl-28093890

RESUMO

OBJECTIVE: To study a novel penile reinnervation technique using four sural nerve grafts and end-to-side neurorraphies connecting bilaterally the femoral nerve and the cavernous corpus and the femoral nerve and the dorsal penile nerves. PATIENTS AND METHODS: Ten patients (mean [± sd; range] age 60.3 [± 4.8; 54-68] years), who had undergone radical prostatectomy (RP) at least 2 years previously, underwent penile reinnervation in the present study. Four patients had undergone radiotherapy after RP. All patients reported satisfactory sexual activity prior to RP. The surgery involved bridging of the femoral nerve to the dorsal nerve of the penis and the inner part of the corpus cavernosum with sural nerve grafts and end-to-side neurorraphies. Patients were evaluated using the International Index of Erectile Function (IIEF) questionnaire and pharmaco-penile Doppler ultrasonography (PPDU) preoperatively and at 6, 12 and 18 months postoperatively, and using a Clinical Evolution of Erectile Function (CEEF) questionnaire, administered after 36 months. RESULTS: The IIEF scores showed improvements with regard to erectile dysfunction (ED), satisfaction with intercourse and general satisfaction. Evaluation of PPDU velocities did not reveal any difference between the right and left sides or among the different time points. The introduction of nerve grafts neither caused fibrosis of the corpus cavernosum, nor reduced penile vascular flow. CEEF results showed that sexual intercourse began after a mean of 13.7 months with frequency of sexual intercourse varying from once daily to once monthly. Acute complications were minimal. The study was limited by the small number of cases. CONCLUSIONS: A total of 60% of patients were able to achieve full penetration, on average, 13 months after reinnervation surgery. Patients previously submitted to radiotherapy had slower return of erectile function. We conclude that penile reinnervation surgery is a viable technique, with effective results, and could offer a new treatment method for ED after RP.


Assuntos
Disfunção Erétil/etiologia , Disfunção Erétil/cirurgia , Nervo Femoral/cirurgia , Pênis/inervação , Pênis/cirurgia , Complicações Pós-Operatórias/etiologia , Complicações Pós-Operatórias/cirurgia , Prostatectomia/efeitos adversos , Nervo Sural/transplante , Idoso , Sistema Nervoso Autônomo/cirurgia , Seguimentos , Humanos , Masculino , Pessoa de Meia-Idade , Procedimentos Neurocirúrgicos/métodos , Prostatectomia/métodos , Fatores de Tempo , Procedimentos Cirúrgicos Urológicos Masculinos/métodos
17.
Neurosurg Focus ; 42(3): E2, 2017 Mar.
Artigo em Inglês | MEDLINE | ID: mdl-28245668

RESUMO

OBJECTIVE Long-segment injuries to large peripheral nerves present a challenge to surgeons because insufficient donor tissue limits repair. Multiple supplemental approaches have been investigated, including the use of Schwann cells (SCs). The authors present the first 2 cases using autologous SCs to supplement a peripheral nerve graft repair in humans with long-term follow-up data. METHODS Two patients were enrolled in an FDA-approved trial to assess the safety of using expanded populations of autologous SCs to supplement the repair of long-segment injuries to the sciatic nerve. The mechanism of injury included a boat propeller and a gunshot wound. The SCs were obtained from both the sural nerve and damaged sciatic nerve stump. The SCs were expanded and purified in culture by using heregulin ß1 and forskolin. Repair was performed with sural nerve grafts, SCs in suspension, and a Duragen graft to house the construct. Follow-up was 36 and 12 months for the patients in Cases 1 and 2, respectively. RESULTS The patient in Case 1 had a boat propeller injury with complete transection of both sciatic divisions at midthigh. The graft length was approximately 7.5 cm. In the postoperative period the patient regained motor function (Medical Research Council [MRC] Grade 5/5) in the tibial distribution, with partial function in peroneal distribution (MRC Grade 2/5 on dorsiflexion). Partial return of sensory function was also achieved, and neuropathic pain was completely resolved. The patient in Case 2 sustained a gunshot wound to the leg, with partial disruption of the tibial division of the sciatic nerve at the midthigh. The graft length was 5 cm. Postoperatively the patient regained complete motor function of the tibial nerve, with partial return of sensation. Long-term follow-up with both MRI and ultrasound demonstrated nerve graft continuity and the absence of tumor formation at the repair site. CONCLUSIONS Presented here are the first 2 cases in which autologous SCs were used to supplement human peripheral nerve repair in long-segment injury. Both patients had significant improvement in both motor and sensory function with correlative imaging. This study demonstrates preliminary safety and efficacy of SC transplantation for peripheral nerve repair.


Assuntos
Células de Schwann/transplante , Nervo Isquiático/lesões , Nervo Isquiático/cirurgia , Neuropatia Ciática/cirurgia , Nervo Sural/transplante , Ferimentos por Arma de Fogo/cirurgia , Acidentes , Adulto , Feminino , Seguimentos , Humanos , Células de Schwann/fisiologia , Neuropatia Ciática/diagnóstico por imagem , Nervo Sural/fisiologia , Transplante Autólogo , Ferimentos por Arma de Fogo/diagnóstico por imagem
18.
J Hand Surg Am ; 42(4): 265-273, 2017 Apr.
Artigo em Inglês | MEDLINE | ID: mdl-28262383

RESUMO

PURPOSE: To assess the efficacy of nerve transfer versus nerve grafting in restoring motor and sensory hand function in patients with complete, isolated high ulnar nerve injuries. METHODS: A retrospective chart review was performed, at a minimum 2 years of follow-up, of 52 patients suffering complete, isolated high ulnar nerve injury between January 2006 and June 2013 in one specialized hand surgery unit. Twenty-four patients underwent motor and sensory nerve transfers (NT group). Twenty-eight patients underwent sural nerve grafting (NG group). Motor recovery, return of sensibility and complications were examined as outcome measures. The Medical Research Council scale was applied to evaluate sensory and motor recovery. Grip and pinch strengths of the hand were measured. RESULTS: Twenty of 24 patients (83.33%) in the NT group regained M3 grade or greater for the adductor pollicis, the abductor digiti minimi, and the medial 2 lumbricals and interossei, compared with only 16 of 28 patients (57.14%) in the NG group. Means for percentage recovery of grip strengths compared with the other healthy hand were significantly higher for the NT group than the NG group. Sensory recovery of S3 or greater was achieved in more than half of each group with no significant difference between groups. CONCLUSIONS: Nerve transfer is favored over nerve grafting in managing high ulnar nerve injuries because of better improvement of motor power and better restoration of grip functions of the hand. TYPE OF STUDY/LEVEL OF EVIDENCE: Therapeutic IV.


Assuntos
Nervo Mediano/transplante , Transferência de Nervo/métodos , Traumatismos dos Nervos Periféricos/cirurgia , Nervo Sural/transplante , Nervo Ulnar/lesões , Adulto , Feminino , Força da Mão , Humanos , Masculino , Pessoa de Meia-Idade , Procedimentos Neurocirúrgicos/métodos , Força de Pinça , Estudos Retrospectivos , Nervo Ulnar/cirurgia , Adulto Jovem
19.
J Craniofac Surg ; 28(5): 1167-1170, 2017 Jul.
Artigo em Inglês | MEDLINE | ID: mdl-28570404

RESUMO

BACKGROUND: Corneal anesthesia is a rare and challenging condition, particularly in young children. The insensate cornea leads to abnormal epithelial cell metabolism and loss of trophic influences supplied by the corneal nerve fibers. This results in recurrent spontaneous epithelia erosion and eventual loss of sight. Corneal reinnervation is a definitive treatment option for neuropathic keratitis. The outcome measures in young children following corneal sensitization are different to adults as esthesiometry is unachievable. METHODS: The authors have undertaken corneal reinnervation in a young patient using a sural nerve graft. Surrogate measures suitable for pediatric patients were used for assessment of the outcome. RESULTS: Postoperatively there was evidence of improved corneal healing and function after 8 weeks. At 10 months postprocedure, the cornea was completely free of vascularization. CONCLUSION: Resensitization of the cornea using nerve grafts has previously been reported in older children and adults. This is the first time the procedure has been undertaken in a young child. Although the technique is still in its infancy with only 4 patients reported worldwide including our report, it seems to hold promise of improvement to this challenging cohort of patients.


Assuntos
Córnea/inervação , Ceratite/cirurgia , Transferência de Nervo/métodos , Nervo Sural/transplante , Pré-Escolar , Córnea/cirurgia , Humanos , Ceratite/etiologia , Masculino
20.
J Craniofac Surg ; 28(4): e307-e311, 2017 Jun.
Artigo em Inglês | MEDLINE | ID: mdl-28212127

RESUMO

Intraosseous schwannomas of the mandible are rare tumors that usually arise from peripheral nerve sheaths of the main trunk or branches of the inferior alveolar nerve (IAN).A systematic review of the English literature through PubMed was conducted from 1945 to 2016. Forty-nine patients of mandibular intraosseous schwannomas were identified. The most common location of the tumor was the posterior mandible (61.2%). There were 28 patients in whom the tumor involved the IAN (57.1%). The most commonly performed procedures included enucleation through a mucoperiosteal flap and a bone window (73%), curettage (10%), segmental mandibulectomy (10%), and sagittal split ramus osteotomy (6%). The recurrence rate was 6%: all 3 recurrent patients occurred in the posterior area. The authors report a 72-year-old female with a schwannoma of the IAN which was removed through a sagittal split of the mandible, although there was a bony defect of the external cortex after biopsy of the lesion. The nerve was reconstructed with a sural nerve graft.Due to the slow growing nature and encapsulation of schwannomas, surgical resection seems the best treatment with optimal functional outcomes and low recurrence rate even with a minimally invasive approach. Sagittal split ramus osteotomy and segmental mandibulectomy are reserved to large or posterior lesions to aid with radical resection or improve exposure and reconstruction.


Assuntos
Mandíbula/cirurgia , Neoplasias Mandibulares/cirurgia , Neurilemoma/cirurgia , Feminino , Humanos , Masculino , Nervo Mandibular/cirurgia , Osteotomia Mandibular , Recidiva Local de Neoplasia , Procedimentos Neurocirúrgicos , Osteotomia Sagital do Ramo Mandibular , Nervo Sural/transplante
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