陈旧性bennett骨折的处理.ppt

Bennetts Fracture of theThumbBennetts Fracture of theThumb1 v The fracture described by Edward Hallaran Bennett in 1882,however,is an unstable oblique fracture entering the carpometacarpal joint at about the middle of the articular surfaceDefinitionDefinition2 CompositionComposition3 4 FructionFruction5 Damage mechanismsDamage mechanismsA Bennetts fracture occurs when the metacarpal bone in the thumb breaks and dislocates at the base of the thumb.This injury occurs when a force is placed on the thumb when it is slightly bent.Bennetts fractures can result from any significant forces placed on the base of the thumb,such as sports,falls and accidents6 TreatmentFresh injuryTreatmentFresh injuryProblemJoint instabilityProblemJoint instabilityYour doctor will evaluate your x-rays to determine the appropriate treatment for the injury.If the joint surface is lined up well,a cast can be used for treatment.If the joint surface is out of position,usually surgery will be recommended.At the time of surgery,your doctor will determine if the bones can be held in place with pins placed through the skin.If not,an incision is made to properly align the bone fragments.7 TreatmentTreatmentChronic injuriesChronic injuriesv Arthrodesis Compared v Ligament Reconstruction and Tendon InterpositionThumb Carpometacarpal Osteoarthritis:Arthrodesis Compared Thumb Carpometacarpal Osteoarthritis:Arthrodesis Compared with Ligament Reconstruction and Tendon Interposition with Ligament Reconstruction and Tendon Interposition The Journal of Bone and Joint Surgery(American)83:1470-1478(2001)8 畸形愈合伴持续性半脱位可发展为腕掌关节疼痛性关节炎。6周后不应再尝试复位。一旦出现退行性关节炎，应行关节融合术或关节成形术Giachino9 Thank you！