Objective To compare the biomechanical stability of Kirschner wire and tension band wiring, reconstruction plate combined with tension band wiring, and olecranon anatomical plate in fixing proximal ulna combined with olecranon fracture, so as to provide the theoretical evidence for clinical selection of internal fixation. Methods Eight specimens of elbow joints and ligaments were taken from eight fresh male adult cadaveric elbows (aged 26-43 years, mean 34.8 years) donated voluntarily. The model of proximal ulna combined with olecranon fracture was made by an osteotomy in each specimen. Fracture end was fixed successively by Kirschner wire and tension band wiring (group A), reconstruction plate combined with tension band wiring (group B), and olecranon anatomical plate (group C), respectively. The biomechanical test was performed for monopodium compression experiments, and load-displacement curves were obtained. The stability of the fixation was evaluated according to the load value when the compression displacement of fracture segment was 2 mm. Results No Kirschner wire withdrawal, broken plate and screw, loosening and specimens destruction were observed. The load-displacement curves of 3 groups showed that the displacement increased gradually with increasing load, while the curve slope of groups B and C was significantly higher than that of group A. When the compression displacement was 2 mm, the load values of groups A, B, and C were (218.6 ± 66.9), (560.3 ± 116.1), and (577.2 ± 137.6) N, respectively; the load values of groups B and C were significantly higher than that of group A (P lt; 0.05), but no significant difference was observed between groups B and C (t=0.305, P=0.763). Conclusion The proximal ulna combined with olecranon fracture is unstable. Reconstruction plate combined with tension band wiring and olecranon anatomical plate can meet the requirement of fracture fixation, so they are favorable options for proximal ulna combined with olecranon fracture. Kirschner wire and tension band wiring is not a stable fixation, therefore, it should not be only used for proximal ulna combined with olecranon fracture.
Objective To compare the results of plate and Kirschner wire fixation in treatment of nonunion of clavicular fracture. Methods From September 1991 to January 2002, 19 patients (9 with plate and 10 with Kirschner wire) were treated. The results were evaluated by reduction, bone union time, recovery of joint function, pain, and correction of deformation. Results The follow-up time was 6-23 months with an average of 11 months. Bone union -occurred after a mean time of 11 weeks. In plate group, 7 patients gained excellent results, 1 good and1 fair. In Kirschner wire group, 3 patients gained excellent results, 3 good, 3 fair and 1 poor. The result of plate is significantly better than that of Kirschner wire fixation(Plt;0.05). Conclusion Plate fixation is a good simple method for treatment of nonunion of clavicular fracture.
Objective To review the efficacy of reconstruction plate combined with tension band wiring for treating proximal ulna and olecranon fractures. Methods Between November 2004 and September 2009, 10 patients with proximal ulna and olecranon fractures were treated by reconstruction plate combined with tension band wiring. There were 6 males and4 females with an average age of 45.3 years (range, 21-75 years). Five fractures were caused by traffic accident, 2 by fall ing from height, 2 by tumbl ing, and 1 by a machine strangulation. The locations were the left side and the right side in 5 cases respectively. One case was open fracture (Gustilo II) and the other 9 were closed fractures. Olecranon fractures included 4 cases of traverse fractures and 6 cases of comminuted fractures, and proximal ulna fractures included 6 cases of comminuted fractures and 4 cases of obl ique fractures. The combined fractures included 6 radial head fractures, 4 coronoid process fractures, 2 proximal humerus fractures, and 3 scapula fractures; other injury included 1 elbow dislocation and 1 shoulder dislocation. Two patients had secondary operation; the other 8 patients received the primary operations and the time from injury to operation varied from 7 days to 20 days, with an average of 11 days. Results One case had infection at the incision 1 week after operation, and recovered after 2 months of antibiotics and debridement; incisions healed by first intention in other 9 patients. All patients were followed up 12-64 months (mean, 40.5 months). The X-ray films showed that fracture heal ing was achieved at 10-24 weeks (mean, 12 weeks). There was no ulnar nerve symptom in all cases. Heterotopic ossification occurred in 1 case at 2 months and stiffness of the elbow in 1 case at 3 months after operation; they were both cured after symptomatic treatment. Proximal migration of Kirschner wires was found in 1 case at 6 months after operation, whose implants were taken out at 9 months after the first operation because fracture had healed. At last follow-up, the flexion and extension arc of the elbow averaged 92.8°(range, 23-130°), and the arc of forearm rotation averaged 124.4° (range, 42-175°). According to the American Hospital for Special Surgery (HSS) evaluation method, the results were classified as excellent in 6 cases, good in 2, fair in 1, and poor in 1. Conclusion Treating proximal ulna and olecranon fractures by reconstruction plate combined with tension band wiring allows patients to do postoperative exercise early and could effectively avoid compl ications.
ObjectiveTo investigate the application and effectiveness of self-made spring plate in surgical treatment of acetabular posterior wall fracturejavascript:void(0)s.MethodsBetween June 2013 and June 2017, 38 patients with acetabular posterior wall fractures were treated. There were 27 males and 11 females with an average age of 53 years (range, 28-68 years). The injury caused by traffic accident in 18 cases, falling from height in 15 cases, and tumble in 5 cases. There were 4 cases of simple posterior wall fracture, 18 cases of posterior wall fracture with posterior dislocation of hip joint, 10 cases of posterior wall fracture with posterior column fracture, and 6 cases of posterior wall fracture with transverse fracture. The time from injury to admission was 1-4 days (mean, 2.5 days). The time from injury to operation was 4-8 days (mean, 5 days). After fracture reduction via the Kocher-Langenbeck approach (35 cases) or the combined ilioinguinal approach (3 cases), the spring plate was used to press the posterior wall fracture, and then the reconstruction plate was pressed against the spring plate and fixed to the posterior column.ResultsAll the incisions healed by first intention. All patients were followed up 12-36 months (mean, 28 months). Five cases of post-traumatic sciatic nerve injury and 2 cases of sciatic nerve injury caused by traction during operation were fully recovered at 3 months after operation. The imaging examination showed that all the fractures healed. The fracture healing time was 10-16 weeks (mean, 12 weeks). There was no ruptures or failures of internal fixation during the follow-up period. There were 2 cases of femoral head necrosis, 1 case of traumatic arthritis, and 1 case of osteomyositis at last follow-up. The hip joint function was rated as excellent in 27 cases, good in 5 cases, fair in 2 cases, and poor in 4 cases according to the Harris scores at 12 months after operation.ConclusionFor the acetabular posterior wall fracture, it has the advantages of easy to use and reliable fixation that the posterior wall fracture is fixed with spring plate firstly, and the spring plate is pressed to fix the posterior column with the reconstruction plate finally.
【Abstract】 Objective To summary the effects of staged pelvic closure using external fixator combined withreconstruction plate for old Tile B1 pelvic fracture. Methods From August 2000 to August 2006, 14 patients (9 males and 5 females, age ranging from 21 to 65 years with old Tile B1 pelvic fracture with pubic symphysis separation were treated. The injuries were caused by the traffic accident in 10 patients, high crash in 3, and crush in 1. The duration ranged from 4 weeks to 3 months. The 14 patients were compl icated with other injuries in some degrees. The X-ray and CT showed pubic symphysis separation. In 13 patients, pubic symphysis separation distance was more than 2.5 cm, who also had fracture or dislocation in the posterior structure of pelvis. The X-ray films showed the mean pubic symphysis separation distance was (6.67 ± 2.11) cm preoperatively. The 14 patients underwent pelvic external fixation at first and staged pelvic closure gradually for the pubic symphysis separation. After 2 to 3 weeks, when the pubic symphysis separation distance was less than 1 cm, the patients underwent open reduction and internal fixation with reconstruction plate. Pubic symphysis separation distance was measuredin the preoperative and postoperative pelvic anterioposterior X-ray films. The condition of the posterior structure of pelvis was observed in CT films. The functions of patients were assessed according to Majeed grading system. Results All incisions healed by first intention. The 14 patients were followed up for 6 months to 2 years (15 months on average). The X-ray films showed the mean pubic symphysis separation distance of post-operation was (0.85 ± 0.23) cm, showing statistically significant difference when compared with that of pre-operation (P lt; 0.05). The CT films showed fracture and dislocation of the posterior structure of pelvis had bony heal ing after 6 to 12 months. According to the Majeed grading system, the results were excellent in 5 cases, good in 4 cases, fair in 4 cases and poor in 1 case; the excellent and good rate was 64.29%. Conclusion Staged pelvic closure using external fixation combined with reconstruction plate for old pelvic fracture with pubic symphysis separation can reduce the pubic symphysis separation distance significantly. Satisfactory effects can be expected in treating the patients with TileB1 fracture.
ObjectiveTo explore the effectiveness of the calcaneal plate bridge reconstruction plate for acetabular fracture involving quadrilateral surface via modified Stoppa approach.MethodsBetween January 2015 and December 2017, 18 patients with acetabular fracture involving quadrilateral surface were treated with the calcaneal plate bridge reconstruction plate via the modified Stoppa approach. There were 12 males and 6 females. The age ranged from 28 to 63 years (mean, 39 years). The cause of injury was traffic accident in 13 cases and falling from height in 5 cases. According to the Letournel-Judet classification, there were 10 cases of anterior and posterior column fractures, 6 cases of T-shaped fractures, and 2 cases of anterior column and posterior semi-transevere fractures. The interval from injury to operation was 6 to 24 days (mean, 8.6 days). The reduction quality was assessed by postoperative X-ray film and CT according to the criteria proposed by Matta. The hip joint function was assessed by the modified Merled’Aubigné-Postel score.ResultsThe operation time was 120-240 minutes (mean, 165 minutes) and the intraoperative blood loss was 600-1 400 mL (mean, 850 mL). All patients were followed up 18-30 months (mean, 24.5 months). There were 2 cases of the fat liquefaction of abdominal incisions, 3 cases of intraoperative injury of lateral femoral cutaneous nerve, 1 case of lower limb thrombosis, and 1 case of abdominal pain and hematuria due to intraoperative accidental bladder injury. According to the criteria proposed by Matta, the reduction quality rated as anatomic reduction in 12 cases, satisfactory reduction in 5 cases, and unsatisfied reduction in 1 case, and the satisfaction rate was 94.4%. All fractures healed with the healing time of 3-5 months (mean, 3.4 months). During follow-up, no internal fixator loosening, breakage, or fracture displacement occurred. At last follow-up, according to modified Merled’Aubigné-Postel score, hip joint functions rated as excellent in 11 cases, good in 4 cases, fair in 2 cases, and poor in 1 case. The excellent and good rate was 83.3%.ConclusionApplication of calcaneal plate bridge reconstruction plate via the modified Stoppa approach for the acetabular fracture involving the quadrilateral surface can obtain satisfactory effectiveness.
ObjectiveTo investigate the advantages and effectiveness of ISO-C3D guided percutaneous sacroiliac joint screw internal fixation for treatment of pelvic posterior ring injuries by comparing with anterior opened reduction and reconstruction plate internal fixation. MethodsA retrospective analysis was made on the clinical data of 54 patients with posterior ring injury treated between June 2013 and January 2016. Of 54 patients, 33 underwent ISO-C3D guided percutaneous sacroiliac joint screws internal fixation (group A), and 21 underwent anterior opened reduction and reconstruction plate internal fixation (group B). There was no significant difference in gender, age, cause of injuries, injury to operation time, fractures type, combined injuries, and injury severity score (ISS) between 2 groups (P > 0.05). The operation time, intraoperative blood loss, length of operative incision, hospitalization time, postoperative pain degree, reduction evaluation, and functional evaluation were compared between 2 groups. ResultsGroup A was significantly better than group B in operation time, length of operative incision, and hospitalization time (P < 0.05). The intraoperative blood loss of group A (10-20 mL) was significantly less than that of group B[(524.1±160.1) mL]. All patients of the 2 groups were followed up 7 to 24 months with an average of 11.6 months. No injury of vessel or nerve occurred in group A; worse neurological symptoms of lower limbs and incision infection were observed in 2 patients of group B respectively, and the other patients achieved primary healing of incision. At 48 hours after operation, the visual analogue scale (VAS) score of group A (1.7±0.7) was significantly lower than that of group B (8.2±0.8) (t=-30.463, P=0.000). Radiological examination showed fracture reduction. According to the Matta score standard, the reduction results were excellent in 21 cases (63.6%), good in 10 cases (30.3%), and fair in 2 cases (6.1%) in group A; the reduction results were excellent in 16 cases (76.2%), good in 4 cases (19.1%), and fair in 1 case (4.7%) in group B; and there was no significant difference between 2 groups (χ2=0.961, P=0.618). Fracture or dislocation healed well in 2 groups, and the walking function was restored. According to the Majeed standard for evaluation, the results were excellent in 23 cases (69.7%), good in 9 cases (27.3%), and fair in 1 case (3.0%) in group A; the results were excellent in 14 cases (66.7%), good in 5 cases (23.8%), and fair in 2 cases (9.5%) in group B; no significant difference was shown between 2 groups (χ2=1.501, P=0.591). ConclusionCompared with anterior opened reduction and reconstruction plate internal fixation, ISO-C3D navigation percutaneous sacroiliac joint screw internal fixation is an ideal surgical method to treat pelvic posterior ring injury, with the characteristics of less trauma, less pain, precise screw implant and safety.