Background Traditionally, displaced greater tuberosity fractures are treated with open reduction and internal fixation. Arthroscopic treatment and outcome of greater tuberosity fractures is far from comprehensive. The...Background Traditionally, displaced greater tuberosity fractures are treated with open reduction and internal fixation. Arthroscopic treatment and outcome of greater tuberosity fractures is far from comprehensive. The objective of the current study was to assess the surgical procedure and outcome of an arthroscopic method in the treatment of isolated greater tuberosity fractures. Methods From January 2006 to December 2009, 23 patients with isolated greater tuberosity fractures were treated with an arthroscopic procedure using three cannulated screws combined with washers. During follow-up, radiographs and the constant shoulder score （CSS） were used to evaluate the outcome. Results Three cannulated screws with washers were used to fix the fractured fragment of the greater tuberosity under an arthroscope. All incisions healed at primary intention without infection. The mean duration of follow-up was 20 months （range 18-36 months）. Fracture fixation was excellent, and fractures healed 2-6 months （mean 3.8 months） after surgery. At final follow-up, the CSS was 92 （range 86-100）. Conclusions The described arthroscopic procedure provides anatomical reduction and firm fixation for isolated greater tuberosity fractures. It is a successful and minimally invasive procedure with satisfying therapeutic effects as well as excellent functional recovery.展开更多
目的对单纯肱骨大结节骨折的3种不同内固定方式(螺钉、张力带、肱骨大结节锁定钢板)进行生物力学测试,比较其稳定性,为临床肱骨大结节骨折内固定物的选择提供生物力学依据。方法取18具保留肩袖肌的新鲜冰冻成人肱骨尸体标本,建立肱骨大...目的对单纯肱骨大结节骨折的3种不同内固定方式(螺钉、张力带、肱骨大结节锁定钢板)进行生物力学测试,比较其稳定性,为临床肱骨大结节骨折内固定物的选择提供生物力学依据。方法取18具保留肩袖肌的新鲜冰冻成人肱骨尸体标本,建立肱骨大结节骨折模型后,随机编号分为3组,分别采用螺钉、张力带及肱骨大结节锁定钢板技术固定大结节骨折块,牵拉冈上肌,测试力-位移曲线,记录2组参数:大结节移位5 mm时力的大小(load to 5 mm yield point,LtYP)及失效负荷(load to failure,LtF)。结果 3组标本(螺钉组、张力带组、肱骨大结节锁定钢板组)在大结节移位5 mm时力的大小分别为(377±86)、(499±90)、(793±52)N,3组标本间LtYP差异有统计学意义(P<0.01);两两比较,锁定钢板组LtYP远大于螺钉组(本研究中仅3例在内固定失效前位移达到5 mm),差异有统计学意义(P<0.01),锁定钢板组LtYP相比张力带组差异有统计学意义(P<0.01),张力带组LtYP相对螺钉组表现出明显的统计学意义(P<0.01)。3组标本失效负荷分别为(744±112)、(908±93)、(979±143)N,3组标本间LtF差异有统计学意义(P<0.01);锁定钢板组LtF相对螺钉组具有明显的统计学意义(P<0.01),张力带组LtF相对螺钉组有统计学意义(P<0.01),但锁定钢板组LtF与张力带组之间无明显统计学差异(P>0.05)。结论肱骨大结节锁定钢板组相对螺钉组及张力带组表现出明显的生物力学优势,锁定钢板将为临床治疗单纯肱骨大结节骨折提供新的、更好的选择。展开更多
文摘Background Traditionally, displaced greater tuberosity fractures are treated with open reduction and internal fixation. Arthroscopic treatment and outcome of greater tuberosity fractures is far from comprehensive. The objective of the current study was to assess the surgical procedure and outcome of an arthroscopic method in the treatment of isolated greater tuberosity fractures. Methods From January 2006 to December 2009, 23 patients with isolated greater tuberosity fractures were treated with an arthroscopic procedure using three cannulated screws combined with washers. During follow-up, radiographs and the constant shoulder score （CSS） were used to evaluate the outcome. Results Three cannulated screws with washers were used to fix the fractured fragment of the greater tuberosity under an arthroscope. All incisions healed at primary intention without infection. The mean duration of follow-up was 20 months （range 18-36 months）. Fracture fixation was excellent, and fractures healed 2-6 months （mean 3.8 months） after surgery. At final follow-up, the CSS was 92 （range 86-100）. Conclusions The described arthroscopic procedure provides anatomical reduction and firm fixation for isolated greater tuberosity fractures. It is a successful and minimally invasive procedure with satisfying therapeutic effects as well as excellent functional recovery.
文摘目的对单纯肱骨大结节骨折的3种不同内固定方式(螺钉、张力带、肱骨大结节锁定钢板)进行生物力学测试,比较其稳定性,为临床肱骨大结节骨折内固定物的选择提供生物力学依据。方法取18具保留肩袖肌的新鲜冰冻成人肱骨尸体标本,建立肱骨大结节骨折模型后,随机编号分为3组,分别采用螺钉、张力带及肱骨大结节锁定钢板技术固定大结节骨折块,牵拉冈上肌,测试力-位移曲线,记录2组参数:大结节移位5 mm时力的大小(load to 5 mm yield point,LtYP)及失效负荷(load to failure,LtF)。结果 3组标本(螺钉组、张力带组、肱骨大结节锁定钢板组)在大结节移位5 mm时力的大小分别为(377±86)、(499±90)、(793±52)N,3组标本间LtYP差异有统计学意义(P<0.01);两两比较,锁定钢板组LtYP远大于螺钉组(本研究中仅3例在内固定失效前位移达到5 mm),差异有统计学意义(P<0.01),锁定钢板组LtYP相比张力带组差异有统计学意义(P<0.01),张力带组LtYP相对螺钉组表现出明显的统计学意义(P<0.01)。3组标本失效负荷分别为(744±112)、(908±93)、(979±143)N,3组标本间LtF差异有统计学意义(P<0.01);锁定钢板组LtF相对螺钉组具有明显的统计学意义(P<0.01),张力带组LtF相对螺钉组有统计学意义(P<0.01),但锁定钢板组LtF与张力带组之间无明显统计学差异(P>0.05)。结论肱骨大结节锁定钢板组相对螺钉组及张力带组表现出明显的生物力学优势,锁定钢板将为临床治疗单纯肱骨大结节骨折提供新的、更好的选择。
