ABSTRACT
<p><b>OBJECTIVES</b>To study the best entry points, direction and length of screw in acetabular posterior column plate technique, and to prevent the serious complications of screw penetrating the joint surface.</p><p><b>METHODS</b>February to July 2008 20 male cadaveric adult semi-pelvic specimen were taken.Serial cross-sections of the acetabular posterior column were determined and made. The safe angle of screw entry and the length on all entry points of each cross-section were measured. And put all data into software SPSS 10.0 for statistics process.</p><p><b>RESULTS</b>On margin of acetabulum, lateral-middle 1/4 point, midpoint, medial-middle 1/4 point and medial margin of posterior column of each cross-section, safe entry angle of inclination was 39 degrees , 57 degrees , 74 degrees , 90 degrees and 106 degrees respectively, the length of the screw was 39, 57, 74, 90 and 106 mm respectively.</p><p><b>CONCLUSION</b>On lateral 1/4 region, lateral-middle 1/4 region, medial-middle 1/4 region and medial 1/4 region, screw posterior column angle is 40 degrees to 60 degrees , 60 degrees to 75 degrees , 75 degrees to 90 degrees , 90 degrees to parallel to the quadrilateral plate, and the length of the screw is 30 mm.</p>
Subject(s)
Adult , Humans , Male , Acetabulum , General Surgery , Bone Plates , Bone Screws , Cadaver , Fracture Fixation, Internal , MethodsABSTRACT
Objective To study the treatment of the chronic calcaneus osteomyelitis combined with skin ulcers or defects of the posterior heel following internal fixation for calcaneal fractures.Methods From February 1999 to June 2005,17 cases of calcaneus osteomyelitis combined with skin ulcers or defects following internal fix- ation for their calcaneal fractures were treated with elimination of infection focuses and dead spaces,tissue trans- plants and continuous irrigation.Skin flaps or myocutaneous flaps were used to repair heel ulcers or defects and to fill the dead spaces.Drainage and irrigation tubes were placed into the flap covered areas to carry out the continuous irrigation.Results All the cases were followed up for 3 to 36 months(mean,25 months).All the grafts survived without recurrence of calcaneus osteomyelitis.Their posterior heels regained fair appearance.Thirteen cases obtained fine sensory recovery and friction tolerance and could walk with weight-bearing.Conclusion Calcaneus os- teomyelitis can be cured by simply and effectively tissue transplants and continuous irrigation,which can provide adequate anti-infection and improve blood circulation.