Delayed Union of Fractures

Delayed union of femoral fractures in older rats:decreased gene expression

BACKGROUND Fracture healing slows with age. While 6-week-old rats regain normal bone biomechanics at 4 weeks after fracture, one-year-old rats require more than 26 weeks. The possible role of altered mRNA gene expression in this delayed union was studied. Closed mid-shaft femoral fractures were induced followed by euthanasia at 0 time (unfractured) or at 1, 2, 4 or 6 weeks after fracture in 6-w...

Delayed union stress fractures of the anterior tibia: conservative management.

INTRODUCTION A conservative method of treating four delayed union stress fractures of the anterior mid-tibia is described, with an illustrative case history. METHODS Once diagnosed each of the patients was treated in a pneumatic lower leg brace with modified rest. The mean (range) age of the patients was 28 (24-32) years and all were involved in professional or amateur sports. The mean (range...

Nutritionally Induced Delayed Union Model of Femur Fractures in Mice

Fixation of delayed union or non-union posterior cruciate ligament avulsion fractures.

PURPOSE To report the outcome of fixation for delayed union or non-union posterior cruciate ligament (PCL) avulsion fractures. METHODS Seven men and 4 women aged 24 to 35 (mean, 28) years underwent lag screw or suture fixation for non-union or delayed union of avulsion fracture of PCL tibial attachment after a mean delay of 8.6 (range, 4-14) months. Patient satisfaction was assessed using a v...

Prevalence of non-union and delayed union in proximal humeral fractures.

BACKGROUND Little is known about the prevalence of proximal humeral non-union. There is disagreement on what constitutes union, delayed union and non-union. Our aim was to determine the prevalence of these complications in proximal humeral fractures (PHFs) admitted to trauma hospitals. METHODS The Victorian Orthopaedic Trauma Outcomes Registry identified 419 cases of PHFs, of which 306 were a...