Octyl-a-cyanoacrylate adhesive in the treatment of tibial transverse fracture in rabbits

Asfracturescausedbyhighenergybecomemoreseriousandtheoccurrencegraduallyincreases,fractures,especiallycomminutedfractures,posemoredifficultiesinthetreatment.Inmanaging comminutedfractures,inappropriatestabilizationof fragmentedbonesisthemaincauseofunsuccessful internalfixationanddelayedunionornonunionof bones.Atpresent,commonlyusedmaterialsinfixation arescrews,steelwire,etc,.Stabilizationofmultiple bonefragmentsisstillthekeyinrealpractice.Octyl a cyanoacrylateadhesivehasbetterbiomechanical stre…     

Analysis of prosthetic replacement in treatment of femoral neck fracture on the hemiplegia side in the elderly

InChinathepopulationofoldpeopleisincreasing ,sotooisstrokeorfemoralneckfracture (FNF) .Thesequelaeofhemiplegiccausedbystrokeisquitecommon ,andfemoralneckfracturesonthehemiplegiasidehappenfrequently .BetweenMay1990andMay 2 0 0 0 ,2 9elderlyhemiplegiapatientswhohadhadstrokewithGardentypeIIIortypeIVfemoralneckfracturesonthehemiplegiasideweretreatedwithprosthesisreplacement .The presentstudyanalyzedthecurativeeffectof prostheticreplacementintreatmentoffemoralneckfracturesonthehemiplegiasidein…     

Percutaneous leverage pinning in the treatment of Bennett’s fracture

Twelve patients (eleven males, one female; mean age 36 years) with Bennetts fracture having a gap or a step-off of more than 2mm and in whom maintenance of the reduced position was difficult were treated by percutaneous leverage pinning. Bone union was obtained in all patients, and the wire was removed 37 days on average after the initial treatment. On the final follow-up examination, mild pain with motion was noted in two patients, and moderate to severe pain was noted in one patient. The reduction of the articular surface of the carpometacarpal joint of the thumb was confirmed by radiography; it was less than 1mm in nine patients, less than 2mm in two, and more than 2mm in one. Because reduction and fixation are performed utilizing the leverage force of the wire inserted into the trapezium, percutaneous pinning has advantages, such as technical simplicity and the ability to apply tension to the fractured site.     

Repair of circular scar in the forearm by expanded double-pedicle Ω-shaped flap at the rear flank of bottom-waist

Objective To discuss the method for repairing the circular scar in the forearm.Methods Large expander (400-600 ml) were implanted subcutaneously at the rear flank of bottom-waist in the way of overlapping or continued expansion. After expansion was completed, the horizontal opened Ω-shaped flap was formed by advancement of expanded skin with the two pedicles at the two sides. Then the forearm was tunneled under flap with the wound covered by flap. The pedicles were cut off at the third stage. Results From April 1998 to June 2009, 8 cases were treated with no flap necrosis. The patients were followed up for1 to 3 years with good flap color and thickness. Flap sensory was partially recovered.Linear atrophic scar was left in the donor sites. Conclusions It is feasible to repair forearm circular scar by expanded double-pedicle Ω-shaped flap at the rear flank of bottom-waist.     

What is the fracture displacement influence to fracture non-union in intramedullary nail treatment in subtrochanteric fracture?

Introduction

The fracture displacement in intramedullary nail in femoral subtrochanteric fracture may cause fracture non-union. We retrospectively analysed our recent experience to clear the influence about fracture displacement in intramedullary nail in femoral subtrochanteric fracture.

The use of conscious sedation for pain control during forearm fracture reduction in children: does race matter?

Recent reports in the medical literature indicate that certain racial disparities have been identified in healthcare. The authors sought to identify the potential relationship between the use of pain medications in African-American and Caucasian children undergoing forearm fracture reduction. This retrospective cohort study was performed at a university-affiliated tertiary care children's hospital emergency department. All Caucasian and African-American patients who underwent a closed reduction of a fractured ulna or radius over the 2-year observational period were enrolled. Patients were excluded from the study if they were admitted to the hospital for an open reduction or had multiple injuries. The relationship between race, gender, insurance status, time of admission, length of stay in the emergency department, fracture characteristics, and the use of conscious sedation was analyzed. t tests, chi-square tests, and stepwise logistic regression were used for data analysis. A total of 503 patients were included, 83% Caucasian and 17% African-American. Four hundred four patients received conscious sedation as part of their fracture reduction procedure and 99 did not. Univariate analysis showed that African-American and Caucasian children had different forearm fracture patterns (P = 0.0116) and different severities of angulation (P = 0.0094). Multivariate statistical analysis revealed that higher amounts of fracture translation (P < 0.0001) and angulation (P < 0.0027) and younger age of the patient (P = 0.0059) were significant predictors of conscious sedation use. Race was not found to be significantly associated with the use of conscious sedation (P = 0.0606 in univariate analysis, P = 0.1678 in multivariate analysis). The authors found that the decision to use conscious sedation for pediatric forearm fractures was not influenced by race, but was influenced by certain fracture characteristics and patient age.     

Repair of circular scar in the forearm by expanded double-pedicle Ω-shaped flap at the rear flank of bottom-waist

Objective To discuss the method for repairing the circular scar in the forearm.Methods Large expander (400-600 ml) were implanted subcutaneously at the rear flank of bottom-waist in the way of overlapping or continued expansion. After expansion was completed, the horizontal opened Ω-shaped flap was formed by advancement of expanded skin with the two pedicles at the two sides. Then the forearm was tunneled under flap with the wound covered by flap. The pedicles were cut off at the third stage. Results From April 1998 to June 2009, 8 cases were treated with no flap necrosis. The patients were followed up for1 to 3 years with good flap color and thickness. Flap sensory was partially recovered.Linear atrophic scar was left in the donor sites. Conclusions It is feasible to repair forearm circular scar by expanded double-pedicle Ω-shaped flap at the rear flank of bottom-waist.     

Treatment of unstable fractures of the forearm in children. Is plating of a single bone adequate?

Unstable fractures of the forearm in children present problems in management and in the indications for operative treatment. In children, unlike adults, the fractures nearly always unite, and up to 10 degrees of angulation is usually considered to be acceptable. If surgical intervention is required the usual practice in the UK is to plate both bones as in an adult. We studied, retrospectively, 32 unstable fractures of the forearm in children treated by compression plating. Group A (20 children) had conventional plating of both forearm bones and group B (12 children) had plating of the ulna only. The mean age was 11 years in both groups and 23 (71%) of the fractures were in the midshaft. In group B an acceptable position of the radius was regarded as less than 10 degrees of angulation in both anteroposterior (AP) and lateral planes, and with the bone ends hitched. This was achieved by closed means in all except two cases, which were therefore included in group A. Union was achieved in all patients, the mean time being 9.8 weeks in group A and 11.5 weeks in B. After a mean interval of at least 12 months, 14 children in group A and nine in group B had their fixation devices removed. We analysed the results after the initial operation in all 32 children. The 23 who had the plate removed were assessed at final review. The results were graded on the ability to undertake physical activities and an objective assessment of loss of rotation of the forearm. In group A, complications were noted in eight patients (40%) after fixation and in six (42%) in relation to removal of the radial plate. No complications occurred in group B. The final range of movement and radiological appearance were compared in the two groups. There was a greater loss of pronation than supination in both. There was, however, no limitation of function in any patient and no difference in the degree of rotational loss between the two groups. The mean radiological angulation in both was less than 10 degrees in both AP and lateral views, which was consistent with satisfactory function. The final outcome for 23 patients was excellent or good in 12 of 14 (90%) in group A, despite the complications, and in eight of nine in group B (90%). If reduction and fixation of the fracture of the ulna alone restores acceptable alignment of the radius in unstable fractures of the forearm, operation on the radius can be avoided.     

Study of the morphology and biomechanics of sacral fracture

Objective:To observe the morphological characteristics of sacral fracture under different impact loads. Method: Ten fresh pelvic specimens were loaded in dynamic or static state. A series of mechanical parameters including the pressure strain and velocity were recorded. Morphological characteristics were observed under scanning electron microscope. Results: The form of sacral fracture was related to the impact energy. Under low-energy impact loads, ilium fracture, acetabulum fracture and crista iliaca fracture were found. Under high-energy impact loads, three types of sacral fracture occurred according to the classification of Denis: sacral ala fracture, Type I fracture; sacral foramen cataclasm fracture, Type II fracture; central vertebral canal fracture, Type III fracture. Nerve injury of one or two sides was involved in all three types of sacral fracture. The fracture mechanism of sacrum between the dynamic impact and static compression was significantly different. When the impact energy was above 25 J, sacral foramen cataclasm fracture occurred, involving nerve root injury. When it was below 20 J, ilium and sacral fracture was most likely to occur. When it was 20 - 25 J, Type I fracture would occur. While in the static test, most of the fracture belonged to ilium or acetabulum fracture. The cross section of sacrum was crackly and the bone board of Haversian system was brittle, which could lead to separation of bone boards and malposition of a few of cross bone boards. Conclusions: In dynamic state, sacrum fracture mostly belongs to Type I and Type n , and usually involves the nerve roots. Sacrum fracture is relevant to the microstructures, the distribution of the bone trabecula, the osseous lacuna and the Haversian system of sacrum. The fracture of ilium and acetabulum more frequently appears in static state, with slight wound of peripheral tissues.     

Is a fracture of the transverse process of L5 a predictor of pelvic fracture instability?

In the management of a pelvic fracture prompt recognition of an unstable fracture pattern is important in reducing mortality and morbidity. It is believed that a fracture of the transverse process of L5 is a predictor of pelvic fracture instability. However, there is little evidence in the literature to support this view. The aim of this study was to determine whether a fracture of the transverse process of L5 is a reliable predictor of pelvic fracture instability. We reviewed our hospital trauma database and identified 80 patients who sustained a pelvic fracture between 2006 and 2010. There were 32 women and 48 men with a mean age of 40 years (10 to 96). Most patients were injured in a road traffic accident or as a result of a fall from a height. A total of 41 patients (51%) had associated injuries. The pelvic fractures were categorised according to the Burgess and Young classification. There were 45 stable and 35 unstable fractures. An associated fracture of the transverse process of L5 was present in 17 patients; 14 (40%) of whom had an unstable fracture pattern. The odds ratio for an unstable fracture of the pelvis in the presence of a fracture of the transverse process of L5 was 9.3 and the relative risk was 2.5. A fracture of the transverse process of L5 in the presence of a pelvic fracture is associated with an increased risk of instability of the pelvic fracture. Its presence should alert the attending staff to this possibility.     

Does hip strength analysis explain the lower incidence of hip fracture in the People's Republic of China?

To explore whether there are ethnic differences in calculated hip strength that might explain the low incidence of hip fracture in China, we used Lunar DPX 'beta' version of hip strength analysis (HAS) and hip axis length (HAL) programs to compare hip geometry, calculated strength and densitometric values from Chinese subjects in Shenyang to those of Caucasian subjects in Oslo and Leuven participating in the European Prospective Osteoporosis Study (EPOS). Subjects were 210 Chinese and 403 Caucasian men and women aged 53-77 years. Parameters investigated included bone mineral density (BMD), bone mineral content (BMC), bone area (BA), cross-sectional moment of inertia (CSMI) and section modulus (both indicating strength and rigidity of the femoral neck), HAL, neck length (NL), neck diameter, tensile stress (Tstress) and compressive stress (Cstress) (indicating the stress in the femoral neck at its weakest cross section arising from walking or a standard fall, respectively), safety factor (SF, indicating the resistance to fracture for forces generated during walking) and fall index (FI, indicating the resistance to fracture from force generated during a fall in the greater trochanter). The Chinese men and women were significantly shorter and lighter than their Caucasian counterparts (P<0.01) and had significantly lower BMD, BMC and BA of the femoral neck (P<0.01). After adjusting for BA, weight and height, there was no significant ethnic difference in either gender in BMC. CSMI and section modulus were significantly lower, and HAL, NL and neck diameter were significantly shorter in the Chinese men and women (P<0.01). These differences all remained after adjusting for weight and height. There were no significant differences in Tstress, Cstress, SF and FI between ethnic groups in either gender. Most of the parameters of calculated hip strength in the Chinese subjects were similar to or poorer than those in the Caucasian subjects. There was no evidence to indicate that Shenyang Chinese have superior BMD or BMC or better calculated hip strength. The short HAL and NL of the population, however, could be an independent factor contributing to the low incidence of hip fracture.     

The posterior interosseous artery in the distal part of the forearm. Is the term "recurrent branch of the anterior interosseous artery" justified?

In 1993 Angrigiani raised the question as to whether the distal part of the posterior interosseous artery (AIP) is a recurrent branch of the anterior interosseous artery (AIA) and forms a "choke"--anastomosis with the AIP in the middle of the forearm. A dissection study was conducted on 66 upper extremities to evaluate the diameters of the dorsal branch of the anterior interosseous artery, the anastomotic branch, the diameter of the posterior interosseous artery at the point of origin of the septocutaneous perforators in the middle of the forearm and the diameter of the posterior interosseous artery at the point of emergence in the dorsal compartment. We further tried to identify different forms and types of the "distal" anastomosis and the connections to the dorsal carpal arch and the ulnar artery. A distal anastomosis between the AIA and AIP was found in 65 of the 66 upper extremities. Three different types of anastomosis could be identified. The smallest diameter was found at the middle of the forearm (mean diameter AIA 1.28 mm; anastomotic branch 0.6 mm; AIP at the middle of the forearm 0.39 mm; AIP prox. 1.35 mm). A branch through the fifth extensor compartment was present in all of our specimens (mean diameter 0.54 mm). A branch through the forth extensor compartment could be found in 16 specimens. Based on our findings and the embryological development, we conclude that the AIP is only present in the proximal half of the forearm. In the distal part, the dorsal branch of the anterior interosseous artery forms a vascular arcade, which gives off branches to the dorsal carpal arch, the ulnar head and the ulnar artery. This arcade anastomoses with the posterior interosseous artery in the middle of the forearm by means of a choke anastomosis. We also conclude that the term "recurrent branch of the anterior interosseous artery" for the distal part of posterior interosseous artery is correct.     

Results of the Max Page muscle sliding operation for the treatment of Volkmann’s ischemic contracture of the forearm

Background

Volkmann’s ischemic contracture is a less common but crippling condition affecting the extremities. Once the condition sets in, the prognosis always remains guarded, even after long and intensive physiotherapy and various restorative surgical techniques. This study was undertaken to evaluate the long-term functional results of the Max Page muscle slide operation in patients with Volkmann’s ischemic contracture of the forearm of moderate degree (Tsuge classification).

Materials and methods

Nineteen patients treated between 1997 and 2009 were evaluated. The functional outcome (measured as the dexterity score, hand grip strength, sensibility, and appearance) was analyzed postoperatively. The pre- and postoperative values were compared using a paired t test. The final results were graded as good, fair, and poor.

Results

The average age at the time of presentation was 18 years (range 3–25 years). Tight external splintage for injuries around elbow and forearm was the primary factor. The mean period of follow-up was 3.53 years. Fifteen patients were able to achieve good functional results. Three had fair and one had poor results. All three variables showed significant improvements postoperatively. Wound dehiscence was the most common complication. One patient needed a second surgery to restore good hand function.

Conclusion

The Max Page muscle sliding operation to treat Volkmann’s ischemic contracture of moderate degree gives good functional results. The procedure is simple and easy to perform. Adequate muscle release and proper postoperative physiotherapy are key to achieving good results.     

Marjolin’s ulcer of the forearm from 30-year-neglection of external fixator

BackgroundMarjolin’s ulcers are a rare form of malignancy that present at regions exposed to chronic infection. They present with a clinical triad of nodularity, induration, and ulceration greater than 3 months.Case reportWe present herein, an extremely rare case of Marjolin’s ulcer of the forearm, secondary to osteomyelitis, resulting from a 30-year neglection of external fixator used to treat a war injury of the forearm.DiscussionMarjolin’s ulcers are classically encountered in lower extremities at sites of burns, trauma or complicated wounds. In the upper extremity however, they are seldom mentioned in literature. The presence of risk factors raise the suspicion of the disease.ConclusionMarjolin’s ulcer is rare sequelae of chronic wound infection. Patients often present after a latency period with exacerbated pain, discharge, and exophytic mass. This disease should be suspected in every case of chronic ulcer, where histological studies of the lesion must be conducted to exclude or confirm the diagnosis.     

How does torsional deformity of the radial shaft influence the rotation of the forearm? A biomechanical study

OBJECTIVE: The aim of this experimental study was to measure the exact influence of isolated torsional deformities at the middle third of the radial shaft on the rotation of the forearm. DESIGN: Biomechanical study in cadavers. SETTING: Trauma Surgery Research Laboratories at the Medical School of Hannover, Hannover, Germany. INTERVENTION: Fourteen intact and fresh cadaver specimens were fixed in a newly developed apparatus that allowed free pronation and supination. A ring fixator was applied to the radial shaft with K-wires that allowed us to stabilize torsional deformities in steps of 10 degrees. The middle of the radial shaft was osteotomized via a small soft tissue window, leaving the other soft tissues, including the interosseous membrane, intact. MAIN OUTCOME MEASUREMENT: Supination and pronation were measured using a goniometer in a standardized fashion. RESULTS: The mean (standard deviation) supination value before osteotomy of the radius was 71.6 degrees (15.2 degrees), and the mean (standard deviation) pronation value was 64.5 degrees (12.4 degrees). Radial osteotomy caused no significant difference in the range of motion before creation of torsional deformities. Supination torsional deformities >30 degrees showed a significant loss of pronation. In turn, pronation torsional deformities >30 degrees resulted in a significant loss of supination. The amount of mean rotational loss was approximately the same in the respective pronation and supination torsional deformities. CONCLUSION: An axial torsional deformity of the radius of >30 degrees causes a statistically significant loss of forearm rotation in fresh cadavers.     

Four-part posterior fracture – dislocations of the shoulder

Ten patients who had been treated by limited open reduction and percutaneous stabilization for four-part posterior fracture-dislocation of the shoulder were followed-up for an average of 3.2 years postoperatively. According to the criteria of Neer, the result was excellent in nine patients, with an average Constant score of 95.7. There was one failure who showed complete avascular necrosis. All patients with excellent results had at least 1 mm of the neck portion of the head fragment intact. Received: 19 May 1998