LUIZ SORRENTI
Projetos de Pesquisa
Unidades Organizacionais
P IOT, Hospital das Clínicas, Faculdade de Medicina - Médico
LIM/41 - Laboratório de Investigação Médica do Sistema Músculoesquelético, Hospital das Clínicas, Faculdade de Medicina
LIM/41 - Laboratório de Investigação Médica do Sistema Músculoesquelético, Hospital das Clínicas, Faculdade de Medicina
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- Shoulder Arthrodesis for Traumatic Brachial Plexus Injuries: Functional Outcomes and Complications(2023) CHO, Alvaro Baik; CHOI, Helio Jiseok; FERREIRA, Carlos Henrique Vieira; KIYOHARA, Leandro Yoshinobu; SILVA, Gustavo Bersani; SORRENTI, LuizBackgroundThe external rotation and abduction of shoulder are considered one of the priorities of reconstruction in brachial plexus injury. The aim of this study was to evaluate the functional results and complications of shoulder arthrodesis in patients with brachial plexus injury to better comprehend the benefits of this procedure.MethodsBetween 2015 and 2019, 15 shoulder arthrodesis were performed in patients with long-standing brachial plexus injury. The main indication for arthrodesis was absent or poor recovery of shoulder abduction and external rotation. Patients presented different levels of injury. Shoulder measurements of active abduction and external rotation were made based on image records of the patients. A long 4.5-mm reconstruction plate was fit along the scapular spine, acromion, and lateral proximal third of the humerus. Structured bone graft was fit into the subacromial space.ResultsThe mean preoperative abduction was 16 degrees, and the mean postoperative abduction was 42 degrees. The mean preoperative external rotation was -59 degrees, and the mean postoperative external rotation was -13 degrees. The mean increase in abduction and external rotation was 25 degrees and 45 degrees, respectively. Bone union was achieved in all cases at an average time of 5.23 months. We experienced humeral fractures in 26.66% of the cases, which were all successfully treated nonoperatively.ConclusionsShoulder arthrodesis is a rewarding procedure for patients with brachial plexus injuries. A marked improvement in the upper limb positioning was observed in all patients. It should be considered as the main therapeutic option in cases where nerve reconstruction is no longer possible.
- The Holevich Flap Revisited: A Comparison with the Foucher Flap, Case Series(2016) TORRES, Luciano Ruiz; SORRENTI, Luiz
- Letter to the Editor Following ""Lateral Gastrocnemius Myocutaneous Flap Transposition to the Midlateral Femur Extending the Arc of Rotation"" by Agarwal et al(2020) FACCIONI, Ana Lucia Campos; TORRES, Luciano Ruiz; SORRENTI, Luiz; MATTAR JUNIOR, Rames
- INTERCOSTAL NERVE TRANSFER TO THE BICEPS MOTOR BRANCH IN COMPLETE TRAUMATIC BRACHIAL PLEXUS INJURIES(2015) BAIK, Alvaro; IAMAGUCHI, Raquel Bernardelli; SILVA, Gustavo Bersani; PAULOS, Renata Gregorio; KIYOHARA, Leandro Yoshinobu; SORRENTI, Luiz; MENEZES, Klicia de Oliveira Costa Riker Teles de; REZENDE, Marcelo Rosa de; WEI, Teng Hsiang; MATTAR JUNIOR, RamesThe purpose of this report is to critically evaluate our results of two intercostal nerve transfers directly to the biceps motor branch in complete traumatic brachial plexus injuries. From January 2007 to November 2012, 19 patients were submitted to this type of surgery, but only 15 of them had a follow-up for >= 2 years and were included in this report. The mean interval from trauma to surgery was 6.88 months (ranging from 3 to 9 months). Two intercostals nerves were dissected and transferred directly to the biceps motor branch. The mean follow-up was 38.06 months (ranging from 24 to 62 months). Ten patients (66.6%) recovered an elbow flexion strength >= M3. Four of them (26.66%) recovered a stronger elbow flexion >= M4. One patient (6.25%) recovered an M2 elbow flexion and four patients (26.66%) did not regain any movement. We concluded that two intercostal nerve transfers to the biceps motor branch is a procedure with moderate results regarding elbow flexion recovery, but it is still one of the few options available in complete brachial plexus injuries, especially in five roots avulsion scenario. (C) 2015 Wiley Periodicals, Inc.
bookPart Síndromes compressivas dos nervos periféricos(2021) SORRENTI, Luiz; CREPALDI, Bruno Eiras- DISTAL NEUROTIZATION OF THE ANTERIOR INTEROSSEOUS NERVE TO RECOVER HAND GRASPING(2023) CHO, Alvaro Baik; FERREIRA, Carlos Henrique Vieira; FONTANA, Renan Martins; MONTANO, Gary Alan Angulo; KIYOHARA, Leandro Yoshinobu; SORRENTI, LuizLower trunk lesions are uncommon, representing about 3 to 5% of brachial plexus lesions in adults. One of the functions lost by patients who suffer this type of injury is the flexion of the fingers, with important harming of palmar grip. This series of cases proposes the transfer of a branch of the radial nerve to the anterior interosseous nerve (AIN), presenting a new alternative for the treatment of these lesions with highly satisfactory results. Objective: To demonstrate our strategy, technique, and results in the reinnervation of the AIN in lesions isolated from the lower trunk of the brachial plexus in four cases of high lesion of the median nerve. Method: Prospective cohort study in which four patients underwent neurotizations. The treatment was directed to the recovery of the fingers' flexors of the hand and the grip. Results: All patients presented reinnervation of the flexor pollicis longus (FPL) and deep flexors of the 2nd, 3rd, and 4th fingers. The deep flexor of the 5th finger also showed reinnervation but with reduced strength (M3/4) comparing to the others (M4+). Conclusion: Despite the limited number of cases in this and other studies, the results are uniformly good, allowing to consider this treatment predictable. Level of Evidence IV, Case Series.
- Feasibility of the Oberlin Procedure in Late Presentation Cases of C5-C6 and C5-C7 Brachial Plexus Injuries in Adults(2022) CHO, Alvaro B.; FERREIRA, Carlos H. V.; TOWATA, Fernando; ALMEIDA, Gabriel C.; SORRENTI, Luiz; KIYOHARA, Leandro Y.Background: Oberlin et al presented a new technique for nerve transfer that completely changed the prognosis of patients with brachial plexus injury. Currently, most of the literature addresses cases submitted to early surgical intervention, before 12 months from injury, showing consistent good results. The aim of this study was to evaluate the feasibility of the Oberlin procedure in late presentation cases (>= 12 months), comparing the elbow flexion strength with patients operated earlier. Methods: We retrospectively reviewed 49 patients with partial brachial plexus injuries submitted to the Oberlin procedure. They were divided into 2 groups. Group A included 39 patients operated with <12 months of injury. The mean postoperative follow-up was 22.53 months. The interval from injury to surgery varied from 4 to 11 months (+/- 8.45 months). Group B included 10 patients with surgery >= 12 months after injury. The mean postoperative follow-up was 32 months. The interval from injury to surgery ranged from 12 to 19 months (+/- 15.4 months). Patients were evaluated monthly after surgery and the elbow flexion strength was measured using the British Medical Research Council scale. Results: In Group A, 24 patients presented with either good (M3) or excellent (M4) elbow flexion strength. In Group B, 9 patients presented with either good (M3) or excellent (M4) elbow flexion strength. A significant difference was not seen in the postoperative elbow flexion strength among the 2 groups. Conclusion: Biceps reinnervation with the Oberlin procedure is still feasible and should be attempted after more than 12 months of injury in partial brachial plexus injuries.
- HARVESTING SURAL FLAP WITH COVERED PEDICLE(2023) CHO, Alvaro Baik; FERREIRA, Carlos Henrique Vieira; MENDONCA, Priscilla Goes Medea de; SORRENTI, Luiz; KIYOHARA, Leandro YoshinobuObjective: The aim was to evaluate the viability and the outcomes of the sural flap performed with the pedicle covered by a strip of skin. Methods: A prospective cohort of 20 consecutive cases were evaluated in terms of flap viability, complication rate, and the amount of skin graft required. The location of the defects was the middle third of the tibia in 3 cases, the ankle and hindfoot 15 cases, the middle foot in 1 case, and the forefoot in 1 case. The flap design was the same as described by Masquelet. The only modification included a strip of skin over the entire length of the pedicle. The intermediary skin between the donor site and the defect was incised and the skin was undermined to ac-commodate the pedicle without compression. Results: All cases had a satisfactory evolution, with adequate healing and without flap loss. Both the donor site and the pedicle were primarily closed in all cases. In one patient, the flap developed a limited area of superficial epidermolysis that healed spontaneously. Conclusion: the modified sural flap with a covered pedicle feasible and reliable with a lower rate of complications when compared with the conventional sural flap. Level of Evidence Cohort Studies.