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Background: We evaluated patients with unilateral clubfoot deformity who were treated by complete subtalar release according to Simons’ criteria and assessed the correlation between clinical and radiographic results.
Methods: Eleven patients underwent a complete subtalar release through a Cincinnati incision. Evaluation included a questionnaire and clinical and radiographic examination.
Results: Mean follow-up was 12 years 8 months. The radiographic measurement differences in the diagnostic angles between normal feet and clubfeet were not significant. Shortening of the talus and the navicular bone was significant. The talar dome was flattened in seven patients and was flattened, sclerotic, and irregular in one. Flattening of the talar head was detected in eight patients, irregularity in one, and deformity and sclerosis in one. Six patients had deformity in the talonavicular joint. The navicular bone was wedge shaped in nine patients and subluxated dorsally in seven. The talar head was congruent with the navicular bone semilunar in normal feet; this relation was not detected in patients treated for clubfoot.
Conclusion: Radiographic changes, such as flattening of the talar, a wedge-shaped navicular bone, dorsal navicular migration, irregularity, and lack of congruence of the talonavicular joint, can be encountered postoperatively in clinically and cosmetically healthy patients. These changes may be caused by the nature of the disease, correcting manipulations or casting, or surgical techniques. Although complete subtalar release is an effective procedure for satisfactory clinical results, maintenance of anatomical configuration, but not normal anatomical development of tarsal bones, can be achieved with this method. (J Am Podiatr Med Assoc 98(6): 451–456, 2008)
Background
Fifth metatarsal base fractures are the most commonly seen fractures of the foot. Ankle sprains occur with inversion and plantarflexion mechanisms, similar to most fifth metatarsal base fractures. We sought to investigate the possible ankle injuries that accompany fifth metatarsal base fractures.
Methods
A hospital's digital database was searched for the International Classification of Diseases, Tenth Revision codes for metatarsal bone fractures (codes S92.30 and S92.35) between January 2015 and January 2018. Thirty-nine patients with fifth metatarsal base fracture who underwent ankle magnetic resonance imaging (MRI) within 14 days of injury were included in the study. The MRI findings were evaluated, and comparisons were performed according to fracture zone, sex, and age.
Results
The most common MRI finding was talocrural joint effusion, which was observed in 28 patients (71.8%). Bone marrow edema was observed in 16 patients (41.0%). Chondral injury at the medial dome of talus was observed in three patients (7.7%). Grade 1 ligament sprain was observed in six patients (15.4%): two in the lateral ligament and four in the deltoid ligament.
Conclusions
Although most fifth metatarsal base fractures and ankle sprains occur as a result of a common mechanism, physical examination findings and patients' complaints are very important. Routine MRI should be unnecessary for most patients. If a patient with a fifth metatarsal base fracture has complaints about the ankle joint, one should be aware of bone marrow edema, which was observed in 41.0% of the study population.
Background: The amount of intra-articular displacement of the fracture is the main issue when deciding the treatment method between conservative or surgical means in intra-articular fractures. In this study, we aimed to determine the intraobserver and interobserver reliability of measuring intra-articular displacement and to compare the digital radiographic and computed tomographic (CT) evaluations in distal tibia intra-articular epiphyseal fractures.
Methods: Thirty-seven patients with digital radiography and CT scans were included in the study. Four sets were prepared with these images. Two of four sets were prepared as ankle radiographs, and the other two sets were prepared with CT scan views. Five observers were asked to measure the intra-articular displacement of the fractures in millimeters and also to make a decision between displacement amounts over or under 2 mm. Intraclass correlation coefficient scores were calculated for evaluation of intraobserver reliability, and Fleiss kappa values were calculated for interobserver reliability evaluations. A value greater than 0.75 was accepted as excellent agreement; 0.75 to 0.40 as intermediate to good agreement; and below 0.40 as poor agreement.
Results: There were 15 Salter-Harris type 3, 13 Salter-Harris type 4, seven triplanar, and two Tillaux-Chaput fractures. Both intraobserver and interobserver reliabilities were slightly higher for CT scan evaluations. Amounts of displacement were found to be measured higher after CT scan evaluations other than radiographs. After the measurement of joint displacements on CT scans, it was observed that the measurements found below 2 mm on the digital radiograph measurement changed to greater than or equal to 2 mm in 16.4% of the patients.
Conclusions: This study confirmed that digital radiographs cannot replace CT scans for the measurement of intra-articular displacement in ankle epiphyseal fractures.
Background:
Confirmation of anatomical reduction of ankle syndesmosis is mandatory because improper reduction leads to poor functional results. Coronal plane evaluation of syndesmosis is well described in the literature, but there is little information about sagittal plane evaluation. We sought to evaluate the relationship of fibula and tibia in the sagittal plane and create a new reference that can be applied easily and reliably.
Methods:
Lateral ankle radiographs of 337 individuals with no history of ankle fracture were evaluated. A line was drawn between the anterior and posterior cortices of the distal lateral tibia, and the length of this line was measured (line 1). The distance between the anterior and posterior cortices of the fibula on this line was measured, and the center of this second distance was identified and marked. The posterior half of the fibular width was divided by line 1 and was named the lateral posterior ankle ratio (LPAR). Statistical analysis was performed by side and sex.
Results:
Mean patient age was 38.6 years; mean LPAR was 0.48. There was a significant difference between men and women by age (P < .001) and LPAR (P = .01). There was no significant difference between right and left ankles by age (P = .63) and LPAR (P = .64). The LPAR was less than 0.40 in 6.8% of the radiographs, 0.40 to 0.50 in 57.9%, and greater than 0.50 to 0.60 in 32.9%.
Conclusions:
The LPAR should approximate 50% in normal lateral ankle images and, by extrapolation, after syndesmotic reduction.
Background: There is no study comparing how Weber type C ankle fractures treated with either three- or four-cortex syndesmotic fixation affects the structure of the syndesmosis.
Methods: In a retrospective study, 46 patients were separated into two groups: 22 patients with three-cortex fixation and 24 patients with four-cortex fixation. All of the patients were evaluated clinically and radiographically at least 1 year after removal of the syndesmosis screws.
Results: There were three types of joint space obliteration: type 1, synostosis on plain radiographs; type 2, an incomplete bony bridge on magnetic resonance imaging with normal plain radiographs; and type 3, fibrous obliteration of the joint space. Although obliteration of the joint space was significant (P < .005) after four-cortex fixation, radiologic results did not affect the clinical outcome.
Conclusion: Four-cortex fixation for diastasis after an ankle fracture should not be a routine procedure. We advocate three-cortex fixation because the clinical results are no different and there is less syndesmotic space obliteration postoperatively. (J Am Podiatr Med Assoc 97(6): 457–459, 2007)
