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PubMed1998

The role of fixation of the fibula in open fractures of the tibial shaft with fractures of the ipsilateral fibula: indications and outcomes.

To determine the indications for fibular fixation in cases of combined fractures of the tibia and fibula and the effect of fibular fixation on tibial healing, a retrospective study of open fractures of the tibial shaft with concomitant fibula fractures was conducted at a level one trauma center. Apparent indications for fibular fixation included the presence of a syndesmotic injury and location of fracture within the distal third of the fibula. No significant differences were found in the healing rates, incidence of nonunion and malalignment, or in the number of required subsequent procedures between patients who did and did not undergo fibular stabilization. These results suggest that fixation of the fibula in open fractures of the tibia and fibula has no effect on fracture healing or alignment. A randomized, prospective study is needed to properly validate these findings.

Fibula↗

PubMed1998

Effect of 25-OH-vitamin D on fracture healing in elderly rats.

To investigate the effect of 25-OH-vitamin D supplements (calcidiol) on fracture healing in the elderly, an experimental model with 15 18-month-old female Wistar rats was designed. An experimental fracture in the middle third of both femora of each rat was made. Then the rats were randomly assigned to two groups: one group was subcutaneously treated with 25-OH-vitamin D during all healing processes, and the other group (the control group) was not. After 5 weeks of healing, the animals were killed and both femora were extracted. Blood samples were collected before fracture and at death to determine the levels of 25-OH-vitamin D. All bones that were extracted were subjected to a torsion test to assess healing; a significantly greater maximum shear force before failure was supported in the treated group (p < 0.01). Moreover, a positive correlation (p < 0.01; r=0.55) was found between blood levels of 25-OH-vitamin D at death and the mechanical strength of the callus. Thus, the administration of 25-OH-vitamin D after the experimental fracture significantly improved the mechanical strength of the fractured bone. If similar results are found in the human, then treatment with 25-OH-vitamin D after the occurrence of a fracture would be a good way to improve fracture healing in the elderly.

Aging↗

PubMed2006

Effect of low molecular weight heparin on fracture healing in a stabilized rat femur fracture model.

The purpose of this study was to evaluate the effect of low molecular weight heparin (LMWH) on fracture healing in a standard stabilized rat femur fracture model. A closed, mid-diaphyseal transverse fracture was created in the right femur of Long-Evans rats after insertion of a 0.8-mm K-wire into the medullary canal. Animals were randomized to receive either LMWH (70 units/kg dalteparin) or an injection of normal saline daily for 2 weeks. Animals were sacrificed at 2, 3, and 6 weeks. Fracture healing was assessed by radiographs, histology, and mechanical testing. There were no significant differences between the control and LMWH groups in the percentage of animals with radiographic bridging callus at each time point. Histologic appearance of fracture healing was similar between the control and LMWH groups. There were no significant differences in the normalized mechanical properties of the control and LMWH groups at 2 and 3 weeks. At 6 weeks, the percent torque of the LMWH group was significantly greater than the control group ( p = 0.0072), however, there was no significant difference in the stiffness and energy absorption. Dalteparin, at the dosage used in this study, did not impair fracture healing in this standard stabilized rat femur fracture model.

Animals↗

PubMed2006

Anterior fracture displacement in Colles' fractures after Kapandji wiring in women over 59 years.

The aim of this study was to assess the radiological results of Colles' fractures treated with Kapandji wiring and to determine the frequency of postoperative anterior fracture displacement. The X-rays of 89 fractures in women over 59 years of age were evaluated. Five weeks after injury, palmar shift of the distal fracture fragments and/or palmar tilt of more than 20 degrees were observed in 26 patients. In ten wrists dorsal tilt was not sufficiently corrected and measured more than 10 degrees . Increase in ulnar variance was more than 2 mm in 37 wrists and more than 5 mm in six wrists; this was more pronounced when the palmar tilt was not corrected properly or when anterior fracture displacement was present. We conclude that Kapandji wiring may not be able to prevent anterior fracture displacement in almost one-third of Colles' fractures in osteoporotic elderly patients.

Age Factors↗

PubMed2006

A transepiphyseal fracture of the proximal femur combined with a fracture of the mid-shaft of ipsilateral femur in a child: a case report and literature review.

The paper describes a rare fracture of proximal femur, classified by Delbet (Am J Surg 6:793-797, 1929) as type I (transepiphyseal type) combined with a fracture of the midshaft of ipsilateral femur in a 2-year-old child. Immediate operation with open reduction and internal fixation was successful. During the postoperative course, avascular necrosis (AVN) of capital femoral epiphysis was seen by bone scan. Applying an abduction orthosis used for the treatment of Legg-Calvè-Perthes disease, collapse of capital epiphysis was prevented. Although, a minimal area of AVN and coxa vara remained, no clinical complaints were recorded at the midterm follow-up. While reviewing the relevant literature, the type-I fractures need to be subclassified into two types for appropriate treatment and/or prediction of outcomes based on their anatomic location of the separated femoral capital epiphysis. In type Ia, femoral capital epiphysis is minimally displaced and within the acetabulum and in type Ib it is widely displaced and lying outside the capsule. Our case is a first case of a type Ib fracture of the proximal femur combined with a fracture of the midshaft of ipsilateral femur. Since the complication rate and the prognosis differed between two subclasses, type-Ib fractures need immediate surgical intervention, our case was prevented from massive AVN. And to prevent the collapse of femoral head following AVN, a major complication of the fracture of proximal femur in child, abduction orthosis is recommended as a choice of treatment.

Child, Preschool↗

PubMed2005

Bimalleolar ankle fracture with proximal fibular fracture.

A 56-year-old female patient suffered a bimalleolar ankle fracture with an additional proximal fibular fracture. This is an unusual fracture type, seldom reported in literature. It was operatively treated by open reduction and internal fixation of the lateral malleolar fracture. The proximal fibular fracture was initially not found. Pathogenesis of the fracture seems most likely to be a pronation-eversion trauma, with an additional direct proximal fibular fracture. By reviewing this unusual case, it becomes clear that thorough examination of a trauma patient is very important. Secondary survey might be useful, since additional findings might appear. Treatment just using AO basic principles, will likely result in a satisfactory patient outcome.

Ankle Injuries↗

PubMed1994

The relationship between fracture severity and complication rate in miniplate osteosynthesis of mandibular fractures.

There are many factors influencing the outcome of mandibular fracture management; however, the relationship between fracture severity and complication rate has only been recognised intuitively due to the absence of an accepted system of classification of the severity of these fractures. In 1989 Cooter and David described the alpha numeric system of computer based coding for craniofacial fractures. Using this system, a prospective sample of 324 patients with mandibular fractures presenting to the Royal Adelaide Hospital was coded for fracture severity and their progress followed with respect to complication rate. A strong correlation between complication rate and fracture severity was established.

Bacterial Infections↗

PubMed2006

[Screw fracture after sliding hip screw fixation of an intertrochanteric fracture].

Although no cases have been reported to date, fracture of a sliding hip screw on a screw-plate fixation is a real entity since material watch registries have revealed two non-published cases. We report an illustrative case. A 67-year-old man was hospitalized for a right intertrochanteric fracture. The patient was treated with a sliding hip screw plate fixation (short cannon, 105 mm screw). On the eighth postoperative day, fracture impaction was present with complete loss of impaction reserve associated with secondary discrete divergence in the cannon-screw alignment. Weight-bearing was postponed until the 45th postoperative day. At three months, bone healing had not been achieved. A clear image was also visible at the plate end of the cannon. The patient complained of persistent pain but there were no signs of infection. At the fifth month, the patient fell from the standing position and standard x-rays visualized the nonunion of the intertrochanteric fracture plus a infratrochanteric diaphyseal fracture line in addition to a fracture of the sliding hip screw. The plate screws were intact. The patient underwent revision osteosynthesis with a Medoff plate. Fracture of a sliding hip screw is a rare event. In the present case, the mechanism involved an insufficient impaction reserve and use of a short cannon. Treatment requires extraction of the distal fragment of the screw and a new cemented osteosynthesis.

Aged↗

PubMed1983

Surgery on orbital floor fractures. Influence of time of repair and fracture size.

51 patients with orbital floor fractures were studied retrospectively to evaluate results in relation to time of surgical repair and fracture size. Early repair (less than 2 months) gave better results than late repair (greater than 2 months) in regard to both enophthalmos and extraocular muscle dysfunction. Large fractures (greater than one-half floor or greater than or equal to 15 fracture volume units) were most likely to be associated with significant enophthalmos after surgery. We recommend tomography when necessary to estimate fracture size, and advise early repair of large fractures, preferably within two weeks after injury. Patients with significant extraocular muscle dysfunction due to tissue entrapment, regardless of fracture size, should be repaired early, preferably within 2 weeks after injury, if improvement does not occur spontaneously by that time.

Adult↗

PubMed2005

[Percutaneous vertebroplasty for osteoporotic vertebral compression fractures: experiences and prospective clinical outcome in 26 consecutive patients with 50 vertebral fractures].

PURPOSE: Prospective evaluation of vertebroplasty for osteoporotic compression fractures concerning pain reduction, demand of analgesics and quality of life. MATERIAL AND METHODS: In 26 consecutive patients, 50 vertebral fractures were treated by percutaneous vertebroplasty under fluoroscopic (n = 44) or combined fluoroscopic/CT guidance (n = 6). Prospective follow-up was performed after 6 (for 50 vertebral fractures) and 12 months (for 27 vertebral fractures). Visual analogue scale (VAS) and numeric rating scale (NRS) was applied for the assessment of pain. Subjective quality of life and analgesics demand was documented semi-quantitatively. RESULTS: Mean interval from the beginning of pain symptoms to therapy was 8.5 weeks. Vertebroplasty was technically successful in all evaluated patients. Pain severity decreased from 10 (defined at baseline as initial pain score) to 2.8 after 6 months and 2.7 after 12 months. Subjective quality of life was reported as very well, well or improved in 92 % (n = 26 after 6 months) or 100 % (n = 13 after 12 months). No need for additional analgesic therapy was observed in 69.3 % (n = 26) after 6 months and 61.5 % (n = 13) after 12 months. Eight newly developed vertebral fractures were observed during follow-up, with 5 fractures directly adjacent to previously treated vertebrae. Leakage of polymethyl methacrylate (PMMA) into the intervertebral space or spinal canal was observed in 22 % and 20 % respectively (n = 50 vertebrae) . No neurologic deterioration or complications requiring surgery were observed. CONCLUSION: Vertebroplasty is a successful therapeutic approach for the treatment of osteoporotic vertebral fractures. Persistent improvement of clinical symptoms was shown at follow-up after 6 and 12 months.

Aged↗

PubMed2003

Association between polymorphisms of apolipoprotein E, bone mineral density of the lower forearm, quantitative ultrasound of the calcaneus and osteoporotic fractures in postmenopausal women with hip or lower forearm fracture.

A genetic contribution to the development of osteoporosis is well documented. Although the association between the common allelic variation of apolipoprotein E (APOE), fracture risk, bone loss and bone mineral density (BMD) has been examined in several studies, the results of these investigations are contradictory. The aim of this study was to examine the association between polymorphisms of APOE, BMD of the lower forearm, quantitative ultrasound of the calcaneus and osteoporotic fractures in a population of postmenopausal women with hip or lower forearm fractures admitted to a department of orthopaedic surgery and age-matched controls from the population register. The APOE genotypes of 327 women were studied: 73 with lower forearm fractures, 43 with hip fractures and 211 age-matched controls. The participants were not receiving antiosteoporotic treatment. Polymerase chain reaction restriction fragment length polymorphism (PCR-RFLP) was used to detect the APOE genotypes. Quantitative ultrasound was measured at the calcaneus. Bone mineral density (BMD) of the lower forearm was measured with dual-energy X-ray absorptiometry. The distributions of genotype frequencies in this study were: E2/E2: 0.3%; E2/E3: 16.5%; E2/E4: 2.5%; E3/E3: 54.7%; E3/E4: 24.2%; E4/E4: 1.8%. All subpopulations were in Hardy-Weinburg equilibrium. There was no association between bone mass parameters and the APOE allele groups. Logistic regression analysis did not show any association between fractures and APOE allele groups. In conclusion, this study showed no association between bone mass parameters (BMD, speed of sound (SOS), broadband ultrasound attenuation (BUA)), hip or lower forearm fracture and APOE genotypes in a population of postmenopausal women and age-matched controls.

Aged↗

PubMed2001

Circulating levels of vitamin K1, menaquinone-4, and menaquinone-7 in healthy elderly Japanese women and patients with vertebral fractures and patients with hip fractures.

Recently, vitamin K has become increasingly of interest in the bone metabolism field because of its role as a cofactor in the carboxylation of osteocalcin. Although the role of osteocalcin is not clear, noncarboxylated osteocalcin is one risk factor in hip fractures. It has been reported that the circulating levels of vitamin K1 in osteoporotic patients were significantly lower than those of age-matched control subjects. In this study, we measured circulating levels of vitamin K1, menaquinone-4 (MK-4) and menaquinone-7 (MK-7) in 23 normal healthy women aged 52-93 years (mean +/- SD: 80.1 +/- 3.5), 13 female patients with vertebral fractures aged 66-93 years (80.3 +/- 7.8) and 38 female patients with hip fractures aged 76-87 years (79.8 +/- 9.2), (all Japanese), in order to make sure whether these vitamin K levels were different in these three groups. Serum circulating levels of MK-4 was undetectable in most subjects (only one out of 74). Appreciable numbers from these three groups had undetectable levels of MK-7 (52% of the control group, 23% of the vertebral fracture group and 24% of the hip fracture group). Eight subjects from the normal control group (35%) and five patients from the vertebral group (38%) had undetectable levels of vitamin K1. We did not find a significant difference in the measurable levels of vitamin K1, MK-4 and MK-7 in patients with vertebral fractures or patients with hip fractures compared to age-matched normal controls. Undetectable levels of measured vitamin K1, MK-4 and MK-7 in most of subjects may significantly affect the results.

Aged↗

PubMed1996

Heterogeneity of hip fracture: age, race, sex, and geographic patterns of femoral neck and trochanteric fractures among the US elderly.

To explore potential etiologic differences in the two major types of hip fracture, the authors computed the incidence rates of fractures of the femoral neck and trochanteric region of the proximal femur using a 5 percent sample of the US Medicare population aged 65-99 years. For the period they examined, July 1, 1986, through June 30, 1990, the rates of both hip fracture types increased with age in all race and sex categories. The proportion of hip fractures that occurred in the trochanteric region rose steeply with age among white women, but not among black women, white men, or black men. Within the United States, a north-to-south gradient in rates of both fracture types was observed among women, while no clear pattern was found for men. These findings raise the possibility of etiologic differences in the two fracture types, and the results provide further evidence of sex and racial differences in the risk of osteoporotic fractures.

Black or African American↗

PubMedDate not supplied

High pressure pulsatile lavage irrigation of intraarticular fractures: effects on fracture healing.

OBJECTIVES: To evaluate the effects of pulsatile lavage and bulb syringe irrigation on fracture healing in vivo. DESIGN: Randomized prospective trial in an animal model. SETTING: Medical school orthopaedic department. SUBJECTS: Thirty New Zealand white rabbits. INTERVENTION: The control group (C) underwent osteotomy of the medial femoral condyle, stabilization, and closure. The bulb syringe and pulsatile lavage groups underwent the same procedure as group C, with the addition of irrigation with one liter of normal saline via a bulb syringe (B) or a pulsatile lavage system (P). Animals were administered two fluorescent bone stains: xylenol orange at the time of operation, and calcein green one week postoperatively. Animals were euthanized two weeks postoperatively and femurs were retrieved for histological analysis. MAIN OUTCOME MEASURES: Union was determined by examination of microradiographs under light microscopy. The viability of bone along the fracture site was determined by evaluation of xylenol orange and calcein green staining under fluorescent microscopy. The density of new bone formed in the osteotomy site was assessed by computerized digitization of standardized regions of the proximal and distal osteotomy. RESULTS: Xylenol orange bands were present a mean of 66 +/- 8 percent (mean +/- standard error of the mean), 65 +/- 6 percent, and 44 +/- 5 percent of the distance along the osteotomy in groups C, B, and P, respectively (p < 0.001). Calcein green bands were present throughout the osteotomy site in all specimens. Calcified new bone was present in 62 +/- 4 percent, 58 +/- 7 percent, and 41 +/- 9 percent of the area measured in groups C, B, and P, respectively (p = 0.07). Twenty percent of the osteotomies in groups C and B did not unite, compared with 30 percent in group P (p > 0.5). CONCLUSIONS: Pulsatile lavage irrigation of fresh intraarticular fractures in rabbits has a detrimental effect on early new bone formation; this effect, however, is no longer apparent two weeks following irrigation. While this study evaluated the effects of pulsatile lavage irrigation in noncontaminated fractures without extensive soft tissue injury, the detrimental effects observed on early new bone formation may translate to an increased risk of nonunion in the setting of a contaminated open fracture with extensive soft tissue injury. Based on the results of this investigation, the selective use of pulsatile lavage irrigation appears warranted. In the absence of gross wound contamination, irrigation with a bulb syringe appears less likely to impair fracture healing than does pulsatile lavage irrigation. Expansion of the model used in this study to include bacterial contamination and soft tissue crushing may further elucidate the effects of pulsatile lavage irrigation on fracture healing.

Animals↗

PubMed2006

Intramedullary fixation of tibial shaft fractures using an expandable nail: early results of 54 acute tibial shaft fractures.

OBJECTIVE: To evaluate and present our experience using the expandable nail system for the treatment of acute tibial shaft fractures. DESIGN: Retrospective study. SETTING: Two level-1 trauma centers-University teaching hospitals. METHODS: Fifty-four consecutive patients were treated by this nail system for acute tibial shaft fracture. Two nail diameters were used, 8.5 mm and 10 mm. Operation, hospitalization and healing times, reaming versus nonreaming, isolated versus multiple injuries, and reoperations were recorded and analyzed statistically. RESULTS: Follow-up was obtained either until fracture healing or for a minimum of 1 year with an average of 14 months (12 to 24). All fractures healed in an average time of 72 days (21 to 204). The average healing times for patients treated with 8.5-mm and 10-mm nails were 77.2 days (27 to 204) and 63.4 days (21 to 121), respectively. Average operative time was 103 minutes (40 to 185) if reamed and 56 minutes (30 to 80) if unreamed. Average healing times were 65.4 days (21 to 190) if reamed and 79.5 days (42 to 204) if unreamed. There were 11 complications (20.4%) related to the nailing: 3 deep infections, 2 superficial infections, 2 bone shortenings of 1 cm secondary to nail protrusion in the knee, 1 compartment syndrome, 1 fracture propagation, 1 distal malalignment, and 1 delayed union. Hardware was removed in 6 patients (3 infections, 2 patients' request and 1 protrusion into the knee), and 1 additional patient underwent exchange nailing due to a delayed union. CONCLUSIONS: The expandable nail offers the theoretical advantages of improved load sharing and rotational control without the need for interlocking screws. This study demonstrates satisfactory healing and alignment for the treatment of tibial shaft fractures using this device. However, caution must be exercised when using this nail in cases of significant comminution and in cases where the fracture pattern involves the more proximal or distal aspect of the tibial shaft.

Adult↗

PubMed1991

Delayed union of fibular fractures accompanying fractures of the tibial shaft.

Among 440 adult patients with tibial shaft fracture and accompanying fibular fracture there were eight cases with radiographically ununited fibulae 4 months after the injury, each with uneventful tibial union. Fractures with severe soft-tissue injuries were excluded from this study. In 293 patients the treatment method of the tibial fracture was conservative, comprising closed reduction and immobilization by long plaster cast. In 147 patients it was intramedullary Küntscher nailing, and all the eight cases with delayed fibular union occurred among these, the frequency being 5.4%. The typical accompanying fibular fracture to develop delayed union was a comminuted one in the middle or distal third of the bone. At a followup examination 5 to 8 years after the original injury four of the eight fractures were found to have ultimately spontaneously united, while three showed a radiographically indisputable nonunion. One patient had undergone segmental fibular ostectomy because of persistent local pain but in the remaining patients the subjective symptoms were negligible. The occurrence of delayed fibular union in association with rigid intramedullary nailing of concomitant tibial shaft fracture is a phenomenon of which trauma surgeons should be aware even if the natural course of the condition often seems to be benign.

Adolescent↗

PubMedDate not supplied

Assessment of stiffness and strength of 4 different implants available for equine fracture treatment: a study on a 20 degrees oblique long-bone fracture model using a bone substitute.

OBJECTIVE: To compare the mechanical properties of 4 stabilization methods for equine long-bone fractures: dynamic compression plate (DCP), limited contact-DCPlate (LC-DCP), locking compression plate (LCP), and the clamp-rod internal fixator (CRIF--formerly VetFix). STUDY DESIGN: In vitro mechanical study. SAMPLE POPULATION: Bone substitute material (24 tubes) was cut at 20 degrees to the long axis of the tube to simulate an oblique mid-shaft fracture. METHODS: Tubes were divided into 4 groups (n=6) and double plated in an orthogonal configuration, with 1 screw of 1 implant being inserted in lag fashion through the "fracture". Thus, the groups were: (1) 2 DCP implants (4.5, broad, 10 holes); (2) 2 LC-DCP implants (5.5, broad, 10 holes); (3) 2 LCP implants (4.5/5.0, broad, 10 holes) and 4 head locking screws/plate; and (4) 2 CRIF (4.5/5.0) and 10 clamps in alternating position left and right of the rod. All constructs were tested in 4-point bending with a quasi-static load until failure. The implant with the interfragmentary screw was always positioned on the tension side of the construct. Force, displacement, and angular displacement at the "fracture" line were determined. Construct stiffness under low and high loads, yield strength, ultimate strength, and maximum angular displacement were determined. RESULTS: None of the implants failed; the strength of the bone substitute was the limiting factor. At low loads, no differences in stiffness were found among groups, but LCP constructs were stiffer than other constructs under high loads (P=.004). Ultimate strength was lowest in the LCP group (P=.01), whereas yield strength was highest for LCP constructs (409 N m, P=.004). CRIF had the lowest yield strength (117 N m, P=.004); no differences in yield strength (250 N m) were found between DCP and LC-DCP constructs. Differences were found for maximum angular displacement at the "fracture" line, between groups: LPC<DCP<LC-DCP<CRIF (P< or =.037). CONCLUSIONS: DCP, LC-DCP, and LCP constructs provided sufficient biomechanical stability to withstand single-cycle loads that might be experienced postoperatively. LCP constructs showed the best performance because of the highest yield strength, above which irreversible deformation occurred. Inadequate biomechanical properties, excessive motion, and shape of the device create concern about the use of CRIF in these large sizes. CLINICAL RELEVANCE: CRIF does not meet the demands for equine long-bone fracture treatment. With respect to biomechanical properties, DCP, LC-DCP, and LCP constructs did not show critical differences so other factors may direct clinical selection of these implants. We prefer the LCP implants because of the high yield strength, high stiffness under high-load application, and the least movement at the fracture line.

Animals↗

PubMed2003

The modified Palmer lateral approach for calcaneal fractures: wound healing and postoperative computed tomographic evaluation of fracture reduction.

In 32 consecutive intra-articular calcaneal fractures (28 patients, 4 bilateral), open treatment was done using the modified Palmer lateral approach and the reduction was assessed with postoperative radiography and computed tomography (CT) (coronal and axial images, 1-2 days after surgery). Retrospective analysis of the available radiographs and CT scans was done in 27 fractures (25 patients, 2 bilateral) to assess accuracy of reduction achieved; in five fractures the studies were not available. Sanders classification was type I in 2 (7%), type II in 20 (74%), and type III in 5 (19%) fractures; the calcaneocuboid joint was involved in 9 (33%) fractures. Reduction included elevation of the depressed lateral side of the posterior facet, reduction of the neck (anterior third of calcaneus) to the body (middle third of calcaneus), realignment of the posterior tuberosity, and reduction of lateral wall blowout; internal fixation was done with cannulated screws. Mean (+/-SD) values of the following displacement parameters were significantly improved after surgery: Böhler's angle, posterior facet angle, lateral posterior facet articular depression, heel width (coronal CT), and calcaneal height. There was no significant difference between preoperative and postoperative values of mean angle of Gissane, posterior tuberosity position, and body width and length on axial CT. One (3%) of the 32 fractures was associated with preoperative (traumatic) full-thickness skin necrosis at the sinus tarsi that required free muscle flap coverage. One (3%) postoperative wound healing complication occurred, consisting of wound dehiscence and drainage at the central portion of the surgical wound in a smoker, which resolved with dressing changes and antibiotics. In conclusion, the modified Palmer lateral approach enabled open reduction of major features of calcaneal fractures with less soft-tissue risk than more extensile approaches.

Calcaneus↗