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      Importância da localização anatômica do ramo infrapatelar do nervo safeno na reconstrução do ligamento cruzado anterior com tendões flexores

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          Donor-site morbidity and anterior knee problems after anterior cruciate ligament reconstruction using autografts.

          The authors review the current knowledge on donor site-related problems after using different types of autografts for anterior cruciate ligament (ACL) reconstruction and make recommendations on minimizing late donor-site problems. Postoperative donor-site morbidity and anterior knee pain following ACL surgery may result in substantial impairment for patients. The selection of graft, surgical technique, and rehabilitation program can affect the severity of pain that patients experience. The loss or disturbance of anterior sensitivity caused by intraoperative injury to the infrapatellar nerve(s) in conjunction with patellar tendon harvest is correlated with donor-site discomfort and an inability to kneel and knee-walk. The patellar tendon at the donor site has significant clinical, radiographic, and histologic abnormalities 2 years after harvest of its central third. Donor-site discomfort correlates poorly with radiographic and histologic findings after the use of patellar tendon autografts. The use of hamstring tendon autografts appears to cause less postoperative donor-site morbidity and anterior knee problems than the use of patellar tendon autografts. There also appears to be a regrowth of the hamstring tendons within 2 years of the harvesting procedure. There is little known about the effect on the donor site of harvesting fascia lata and quadriceps tendon autografts. Efforts should be made to spare the infrapatellar nerve(s) during ACL reconstruction using patellar tendon autografts. Reharvesting the patellar tendon cannot be recommended due to significant clinical, radiographic, and histologic abnormalities 2 years after harvesting its central third. It is important to regain full range of motion and strength after the use of any type of autograft to avoid future anterior knee problems. If randomized controlled trials show that the long-term laxity measurements following ACL reconstruction using hamstring tendon autografts are equal to those of patellar tendon autografts, we recommend the use of hamstring tendon autografts because there are fewer donor-site problems.
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            Injuries to the infrapatellar branch(es) of the saphenous nerve in anterior cruciate ligament reconstruction with four-strand hamstring tendon autograft: vertical versus horizontal incision for harvest.

            The goal of this study is to evaluate the incidence rate of iatrogenic injuries to the infrapatellar branch(es) of saphenous nerve during ACL reconstruction with four-strand hamstring tendon autograft. Retrospective review of 226 patients that underwent 230 arthroscopically assisted primary ACL reconstructions with four-strand hamstring tendon autograft, between March 2002 and December 2004. The patients were separated into two groups. In group 1 (116 knees) the tendon was harvested and tibia prepared through a 3-cm vertical surgical incision (between March 2002 and September 2003) and in group 2 (114 knees) through a 3-cm horizontal surgical incision (between October 2003 and December 2004). In group 1, we found 39.7% of the patients with disturbed sensitivity in the area of the infrapatellar branch(es) of the saphenous nerve distribution. In patients of group 2 the incidence of nerve injury was 14.9% (P<0.001). The horizontal surgical incision in harvesting hamstrings tendon autograft for ACL reconstruction was found to have less associated chance of iatrogenic injury to the infrapatellar branch(es) of the saphenous nerve. No technical ties were found in both incisions for graft harvest.
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              Prevalence of saphenous nerve injury after autogenous hamstring harvest: an anatomic and clinical study of sartorial branch injury.

              Injury to the sartorial (terminal) branch of the saphenous nerve (SBSN) has received little attention in the literature, despite its anatomic proximity to the hamstring tendons during autogenous harvesting. This study aims to define the prevalence of saphenous nerve injury after anterior cruciate ligament (ACL) reconstruction with autogenous hamstrings and define clinically relevant anatomy that may contribute to nerve injury. Surveys regarding the presence and duration of sensory changes in the infrapatellar branch of the saphenous nerve (IPBSN) and SBSN were retrospectively sent to 164 patients who had undergone arthroscopically assisted ACL reconstruction with hamstring autograft over a 4-year period. Eleven cadavers were then dissected to identify the relation of the saphenous nerve to the hamstring tendons and accessory insertions. Postoperative sensory disturbance was present in 74% of patients surveyed. Concomitant injuries to both the SBSN and IPBSN occurred in 32% of patients, whereas isolated paresthesias in the SBSN and IPBSN distribution affected 23% and 19%, respectively. The saphenous nerve was intimately associated with the gracilis for 4.6 cm in the distal thigh, from 7.2 cm (range, 6.4 to 9.3 cm) to 11.8 cm (range, 7 to 13.2 cm) proximal to its insertion. Accessory hamstring insertions were present distal to the point where the sartorial branch became extrafascial. The SBSN is at higher risk of injury during hamstring ACL reconstruction than has been previously reported. The saphenous nerve is intimately involved with the gracilis tendon for a portion of its course in the distal thigh, likely predisposing it to damage during passage of the tendon stripper. Level IV.
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                Author and article information

                Journal
                Revista Brasileira de Ortopedia
                Revista Brasileira de Ortopedia
                Elsevier BV
                01023616
                November 2014
                November 2014
                : 49
                : 6
                : 625-629
                Article
                10.1016/j.rbo.2013.10.021
                59216c03-536c-4156-b8cb-b6a1fce96e6e
                © 2014

                https://www.elsevier.com/tdm/userlicense/1.0/

                http://creativecommons.org/licenses/by-nc-nd/4.0/

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