Subcapital Femoral Neck Tension Stress Fracture - A Rare Injury in A Child: A Case Report

@#Femoral neck stress fractures are rare in children. To the best of our knowledge, the tension type stress fracture has been reported only twice in the English language literature. We report on a five years follow-up of a 10-year-old boy with this injury which was initially missed. The fracture healed after screw fixation. We highlight the importance of considering stress fracture as a differential diagnosis in a child with chronic hip pain. A careful physical examination and the appropriate imaging will avoid missing the diagnosis.

Risk factors for stress fracture of lower limbs and future research direction / 中国组织工程研究

BACKGROUND: Stress fractures of lower limbs are common for recruits and athletes, and affect their training to different extent. OBJECTIVE: To summarize the risk factors for the occurrence and development of stress fracture of lower extremity, then to raise the awareness of stress fracture of lower extremity and provide ideas for its prevention. METHODS: A computer-based search was conducted in PubMed, WanFang and CNKI databases from January 2009 to July 2019 with the keywords of “stress fracture, fatigue fracture, overuse injury, risk factors, recruits” in English and Chinese, respectively. A total of 786 relevant articles were retrieved, and 76 articles were eligible for the inclusion criteria. RESULTS AND CONCLUSION: (1) Sex and history of stress fracture have been identified as risk factors for stress fracture. Future studies should be inclined to identify the specific roles of other risk factors in the development of stress fracture. (2) In addition, biomechanical factors are likely to affect the occurrence of stress fracture of the lower limbs of recruits. (3) Therefore, improving the abnormal biomechanical parameters of the lower extremity during the training of recruits can develop a method to prevent the stress fracture of the lower limbs, and reduce the incidence of stress fracture through appropriate management.

Factores asociados a fractura por estrés: estudio de casos y controles en un centro médico de la marina de guerra de Perú / Factors associated with stress fracture: a case-control study in a Peruvian navy medical center

INTRODUCCIÓN: Las fracturas por estrés son lesiones producidas por el sobreuso de ciertas extremidades, generando fatigas repetitivas en el hueso con insuficientes periodos de descanso, trastornos hormonales, entre otras. Se produce una elevada actividad osteoclástica y una menor actividad de los osteoblastos a nivel cortical. OBJETIVO: Determinar los factores asociados a fractura por estrés en un centro médico de la Marina de Guerra de Perú. METODOLOGÍA: Se realizó una investigación de tipo observacional analítica de casos y controles. La variable dependiente fue la fractura por estrés, confirmada por resonancia magnética de los pacientes. Las variables independientes fueron edad, sexo y nivel de calcemia tomadas a partir de la historia clínica; el nivel socioeconómico y tiempo de actividad física diaria fueron datos recogidos mediante encuesta. Se obtuvieron los Odds ratio crudos y ajustados con un intervalo de confianza de 95%. RESULTADOS: Se trabajó con un total de 238 pacientes (119 casos y 119 controles), de los cuales 79,8% fueron varones y 20,2% fueron mujeres; la media de edad fue de 20,25 años. En el análisis bivariado se encontró asociación de fracturas por estrés con el sexo masculino (Odds ratio: 3,00; intervalo de confianza 95%: 1,51 a 5,95), hipocalcemia (Odds ratio: 2,83; intervalo de confianza 95%: 2,32 a 3,44), más de dos horas de actividad física diaria (Odds ratio: 24,74; intervalo de confianza 95%: 12,51 a 48,95) y un nivel socioeconómico C (Odds ratio: 6,66; intervalo de confianza 95%: 2,82 a 15,74). Mantuvieron su asociación en el análisis multivariado el tiempo de actividad física (Odds ratio: 44,46; intervalo de confianza 95%: 17,93 a 110,22) y el nivel socioeconómico C (Odds ratio: 22,57; intervalo de confianza 95%: 7,03 a 72,74). CONCLUSIÓN: Las fracturas por estrés estuvieron asociadas al tiempo de actividad física y a un nivel socioeconómico menor. Son necesarios más estudios para evaluar la relación con otros factores en la población militar de Perú.

INTRODUCTION: Stress fractures are injuries produced by the overuse of certain extremities, generating repetitive fatigue in the bone with insufficient rest periods and hormonal disorders, among others. High osteoclastic activity and lower activity of the osteoblasts at the cortical level occurs. OBJECTIVE: To determine the factors associated with a stress fracture in a single medical center of the Peruvian navy. METHODS: We conducted an observational, analytical case-control study. The dependent variable was stress fracture confirmed by magnetic resonance imaging of the patients; the independent variables were age, sex, calcemia, socioeconomic status, and time of daily physical activity. All data were extracted from the medical records. Crude and adjusted odds ratios were calculated with 95% confidence intervals. RESULTS: The sample was comprised of 238 patients (119 cases and 119 controls), of which 79.8% were male, and 20.2% were female; the average age was 20.25. In the bivariate analysis, stress fractures were associated with male sex (odds ratio 3.00; 95% confidence interval 1.51 to 5.95), hypocalcemia (2.83; 2.32 to 3.44), more than two hours of daily physical activity (24.7; 12.51 to 48.95) and socioeconomic level C (6.66; 2.82 to 15.74). Time dedicated to physical activity (adjusted odds ratio 44.46; 95% confidence interval 17.93 to 110.22) and socioeconomic level C (adjusted odds ratio 22.57; 95% confidence interval 7.03 to 72.74) were associated in the multivariate analysis. CONCLUSION: We found that stress fractures were associated with physical activity time and a lower socioeconomic level. Further studies are needed to evaluate the relationship with other factors in the military population of Peru.

Bilateral Stress Fracture of Femur Neck, Fatigue Type of Non-Athlete Young Adult

Bilateral femoral neck stress fractures have been rarely reported. When diagnosed, they are usually limited to athletes or military personnel. A 35-year-old man, previously healthy, visited the emergency department for right inguinal pain. On physical examination, no external wound, tenderness or limitation of motion were found in either lower extremity. Plain radiography showed normal findings but an magnetic resonance image showed a linear fracture in the femoral neck. In this case, bilateral femoral neck stress fractures were found in a young non-athlete adult with no prior medical history of related injuries. Surgery is generally not performed for stress fractures but considering the patient's early mobilization and the need for quick reintegration into society, surgery was done in this case.

Stress Fracture of the Proximal Clavicle after Parallel Bars Exercise in a Young Male / 대한정형외과학회잡지

Although acute traumatic fractures of the clavicle are relatively common, stress fractures of the proximal clavicle are extremely rare. Stress fractures of the clavicle have often been reported after a radical neck dissection or radiation but rarely occur during excessive repetitive exercise in professional athletes. The authors report a case of a stress fracture of the proximal clavicle during exercise in a young man with no specific preceding factors, which has not been reported in the Korean literature.

Fractura de estrés de cadera en adulto no entrenado tras actividad deportiva intensa. Reporte de caso / Adult untrainned Hip stress fracture. Case Report

En la actualidad es cada vez mayor el número de adultos jóvenes que inician actividad deportiva sin valoración previa de su acondicionamiento físico. En los atletas maduros, con mayor riesgo de presentar hueso osteoporótico, pueden aparecer fracturas por estrés ante traumatismos de menor intensidad repetitivos. En el dolor de cadera en el adulto es importante tener presente la fractura por estrés de cuello femoral, realizando las maniobras exploratorias que permitan su diagnóstico y pedir la prueba de imagen más indicada. Ante una alta sospecha y estudio radiográfico normal debe considerarse la realización de TAC o RMN. El diagnóstico precoz y tratamiento oportuno de esta patología disminuye el riesgo de complicaciones y ofrece la posibilidad de optimizar el uso de recursos.

The number of young adults who start sports activity without prior assessment of their physical conditioning is increasing. In mature athletes, with a higher risk of presenting osteoporotic bone, stress fractures may occur due to repetitive minor trauma. When assesing hip pain in adults it is important to keep in mind femoral neck stress fracture, as well as how to perform exploratory maneuvers that allow diagnosis and request the most appropriate imaging test. In case of high suspicion and normal radiographic study, CT or MRI should be considered. Early diagnosis and timely treatment of this pathology reduces the risk of complications and offers the possibility of optimizing the use of resources.

Enclavado femoral y artroplastía total de rodilla en un tiempo en una paciente con fractura diafisaria femoral por estrés / Interlocking femoral nail and total knee Arthroplasty in one stage for a patient with a femoral diaphyseal stress fracture

Resumen: Presentamos el caso de una mujer de 81 años de edad, en seguimiento por el Servicio de Reumatología por osteoporosis y tratada con bifosfonatos durante más de cinco años. Refirió una fractura del tercio distal del fémur contralateral por mecanismo de baja energía, tratada con enclavado intramedular retrógrado el año anterior. Presentó una clínica de cruralgia y gonalgia izquierda, sin traumatismo previo. Se le realizó una gammagrafía y radiografías que apoyaron el diagnóstico de fractura de estrés del tercio distal del fémur izquierdo y osteonecrosis del cóndilo femoral interno izquierdo. Pensando en las posibles complicaciones de llevar a cabo dos intervenciones en una paciente de avanzada edad, se decidió efectuar el tratamiento en un tiempo y por el mismo abordaje quirúrgico, tratando de resolver la osteonecrosis y la fractura a la vez, con el objetivo de una rehabilitación precoz y menor morbilidad. Se realizó un enclavado profiláctico retrógrado femoral para estabilizar la fractura de estrés y se implantó una prótesis de rodilla primaria retentiva para el ligamento cruzado posterior por el mismo abordaje quirúrgico. No hubo incidencias en el postoperatorio inmediato; se inició deambulación con ayuda a las 48 horas de la intervención. La fractura consolidó y la paciente presentó un buen resultado funcional de la rodilla, tanto en el postoperatorio inmediato como a los tres años de seguimiento.

Abstract: We present the case of an 81-year-old woman who was followed up by the Rheumatology Service for osteoporosis and treated with bisphosphonates for more than five years. She reported a fracture of the distal third of the contralateral femur by a low energy mechanism, treated with retrograde intramedullary nailing the previous year. She presented a clinic of cruralgia and left gonalgia, without previous trauma. A scintigraphy and radiographs were performed to support the diagnosis of stress fracture of the distal third of the left femur and osteonecrosis of the left internal femoral condyle. Thinking about the possible complications of performing two interventions in an elderly patient, we decided to complete the treatment in a single time and by the same surgical approach, trying to resolve the osteonecrosis and the fracture at the same time, with the objective of an early rehabilitation and lower morbidity. A femoral retrograde prophylactic nailing was performed to stabilize the stress fracture and a retentive primary knee prosthesis was implanted for the posterior cruciate ligament by the same surgical approach. There were no incidents in the immediate postoperative period, with ambulation beginning with help 48 hours after the intervention. The fracture consolidated and the patient presented a good functional result of the knee, both in the immediate postoperative period and at three years of follow-up.

Posterior osteotomy for thoracolumbar stress fracture in ankylosing spondylitis through the gap of a pathological fracture / 中国修复重建外科杂志

Objective: To evaluate the effectivity and safety of posterior osteotomy for thoracolumbar stress fracture in ankylosing spondylitis (AS) through the gap of a pathological fracture. Methods: Between April 2012 and August 2015, 8 patients with AS combined with thoracolumbar stress fracture were treated with posterior osteotomy through the gap of a pathological fracture to correct the kyphosis. There were 7 males and 1 female, with an average age of 51 years (range, 37-74 years). The history of AS was 1-40 years (mean, 21.7 years) and disease duration of stress fracture was 2-60 months (mean, 18.5 months). The segmental lesions included T 8, 9 in 1 case, T 10, 11 in 2 cases, T 11 in 2 cases, T 12, L 1 in 1 case, L 1, 2 in 1 case, and L 2, 3 in 1 case. The nerve function before operation according to Frankel grading was grade D in 3 cases and grade E in 5 cases. The pre- and post-operative X-ray films, CT three-dimensional reconstruction, and MRI were collected to measure the global kyphosis (GK), local kyphosis (LK), angle of the fusion levels (AFL), pelvic incidence (PI), pelvic tilt (PT), and sagittal vertical axis (SVA). Visual analogue scale (VAS) score was used to assess the back pain intensity. Results: The operation time was 210-320 minutes (mean, 267 minutes), and the intraoperative blood loss was 400-2 000 mL (mean, 963 mL). Cerebrospinal fluid leakage was found in 3 patients, and the wound healed by removal of drainage tube and suturing drainage outlet after 5-7 days of operation. The wounds of the rest patients healed by first intention. Lower extremity numbness occurred in 1 case and recovered after 1 month of postoperative administration of oral mecobalamin. All the patients were followed up 20-43 months (mean, 28.4 months). No internal fixator loosening, fracture, and other complications occurred. All the fractures healed with the healing time of 3-12 months (mean, 6.8 months). At 3 months after operation, 3 cases with spinal cord injury of preoperative Frankel grade D recovered to grade E. The GK, LK, AFL, PI, PT, SVA, and VAS scores at 1 week after operation and at last follow-up were significantly improved when compared with preoperative ones ( P0.05). Conclusion: Posterior osteotomy through the gap of a pathological fracture is a safe and effective surgical procedure for kyphosis correction and relief of back pain in AS patients combined with thoracolumbar stress fracture. Successful bony fusion and good clinical outcomes can also be achieved by this surgical procedure.

Effectiveness of one-stage total knee arthroplasty with tibial stem extender for knee arthritis complicated with tibial stress fracture / 中国修复重建外科杂志

Abstract: To evaluate the early effectiveness of one-stage total knee arthroplasty (TKA) with tibial stem extender for knee arthritis complicated with tibial stress fractures. Methods: Between January 2014 and November 2016, 12 patients (12 knees) with knee arthritis and tibial stress fractures underwent one-stage TKA with tibial stem extender. There were 5 males and 7 females with an average age of 71.5 years (range, 60-77 years). There were 8 cases with osteoarthritis and 4 cases with rheumatoid arthritis. The radiographic examination showed the 6 cases of intra-articular fractures and 6 of extra-articular fractures (including transverse fractures in 4 cases and short oblique fractures in 2 cases); 2 cases complicated with middle and upper fibular stress fractures; all patients of varus deformities. Preoperative Knee Society Score (KSS) clinical score was 31.5±8.4 and functional score was 33.3±9.0. The preoperative range of motion (ROM) of the knee was (65.6±9.6)°. Results: All indexes healed primarily and no wound infection or skin necrosis occurred. All patients were followed up 36.5 months on average (range, 6-52 months). X-ray films showed that all fractures healed at 3-7 months (mean, 4 months); the position of the prosthesis was good, and no loosening or signs of infection occurred. At last follow-up, the KSS clinical score was 90.5±8.9 and functional score was 92.1±7.8; the ROM of the knee was (115.0±9.8)°. All indicators were significantly improved than those before operation ( t=40.340, P= 0.000; t=32.120, P=0.000; t=8.728, P=0.000). Conclusion: One-stage TKA with tibial stem extender for patients with knee arthritis and tibial stress fractures can restore limb alignment, facilitate fracture healing, and obtain the satisfactory early effectiveness.

Clay-Shoveler's Fracture in an 18-Year-Old Cheerleader: A Case Report

Clay-Shoveler's fracture refers to a fracture that is solely developed on the spinous process of the cervical spine or the thoracic vertebrae. This fracture rarely occurs during sporting activities. In this case, an 18-year-old female developed the fracture on the spinous process of the 7th cervical spine and 1st thoracic vertebrae due to the repetitive practice of cheerleading. The patient's pain was improved by wearing a support device and taking an anti-inflammatory analgesic drug and muscle relaxant. Her case is being followed-up at the outpatient department.

Sacral Stress Fracture Developing after Lumbosacral Fusion in a Patient with Spondylolisthesis: A Case Report

STUDY DESIGN: Case report OBJECTIVES: To report a case of sacral stress fracture that developed after lumbosacral fusion. SUMMARY OF LITERATURE REVIEW: Sacral stress fractures rarely develop after lumbosacral fusion, and osteoporosis, female sex, being over 60 years old, and long segment fusion are known risk factors. MATERIALS AND METHODS: A 66-year-old woman with spondylolisthesis at L5 on S1 underwent posterior lumbar interbody fusion and posterior instrumentation. A sacral stress fracture was found 4 weeks after the first operation, and we performed posterior reduction and posterior instrumentation with S2 alar screws. RESULTS: The patient was free from symptoms and no further displacement was found at 3 months after the last operation. CONCLUSIONS: Sacral stress fracture after lumbosacral fusion can be treated with posterior reduction and posterior instrumentation with S2 alar screws.

Fractura bilateral del cuello femoral por fatiga / Bilateral stress fracture of the femoral neck

Las denominadas fracturas por fatiga o por estrés ocurren en un hueso normal sometido a reiterados episodios de esfuerzo, aunque de menor requerimiento para causar una fractura aguda. Se presenta a una paciente de 63 años de edad, obesa, con antecedentes de salud anterior que comienza a presentar dolor en ambas regiones de la articulación de la cadera, limitando los movimientos e imposibilitando la marcha. Se le realizaron estudios de imagen donde se le diagnosticó una fractura bilateral del cuello femoral, la izquierda de mejor identificación que la derecha. El tratamiento consistió en osteosíntesis de la fractura izquierda con clavo deslizante, y tratamiento conservador mediante reposo de la cadera derecha. La evolución fue satisfactoria, a los 3 meses habían desaparecido los síntomas y a los 6 meses la paciente deambulaba sin dificultad. La asistencia temprana a esta afección es importante para decidir la terapéutica a emplear y de esta manera evitar las complicaciones(AU)

The so called fatigue or stress fractures occur in a normal bone subjected to repeated episodes of stress, albeit of lesser requirement to cause an acute fracture. We present a 63-year-old obese patient with a history of previous health that begins to present pain in both regions of the hip joint, limiting movements and making gait impossible. Imaging studies were performed in which a bilateral fracture of the femoral neck was diagnosed, the left being better identified than the right one. The treatment consisted of osteosynthesis of the left fracture with a sliding nail, and conservative treatment by resting the right hip. The evolution was satisfactory, at 3 months the symptoms had disappeared and at 6 months the patient walked without difficulty. Early care for this condition is important in deciding which therapy to use and thus avoid complications(AU)

Percutaneous bone cement fusion for the stress fracture of vertebral body adjacent to pseudoarthrosis in patients with ankylosing spondylitis: preliminary results in 4 cases / 介入放射学杂志

Objective To assess the clinical value of percutaneous bone cement fusion in treating stress fracture of vertebral body that is adjacent to pseudoarthrosis in patients with ankylosing spondylitis.Methods The clinical data of 4 ankylosing spondylitis patients with stress fracture of vertebral body adjacent to pseudoarthrosis,which was treated with percutaneous bone cement fusion,were retrospectively analyzed.Bone cement fusion through injection of bone cement was performed for 4 vertebral segments.Visual analogue scale (VAS) of pain and Oswesty disability index (ODI) were determined before and after operation,the results were compared,and the improvements of pain and daily activity were evaluated.Results The operation was successfully accomplished in all the 4 patients.The mean used amount of bone cement for each vertebral segment was 14.5 ml.Small amount of bone cement extravasation was observed in one patient,but no severe clinical complication occurred.The mean VAS score decreased from preoperative 9 points to postoperative 3.5 points;ODI score decreased from preoperative 43.8 points to postoperative 14.5 points.After the treatment,the pain was obviously relieved and the daily activity was markedly improved.Conclusion For the treatment of stress fracture of vertebral body that is adjacent to pseudoarthrosis in patients with ankylosing spondylitis,percutaneous bone cement fusion is minimally-invasive,safe and effective.

Development of new loading device for establishment of stress fracture animal models / 医疗卫生装备

Objective To develop a novel stress fracture animal model system based on dynamic cyclic mechanical loading.Methods Ulnae and tibiae of rats were respectively fixed using differently shaped fixtures (including a fixed holder and a movable holder).The axial mechanical loading was applied via a linear actuator based on LabVIEW control program.During the loading process,a load cell and a laser displacement transducer were used to detect the force and displacement changes in the limbs,respectively.The two signals were sampled at real time by PC-based LabVIEW data acquisition program.A compressive loading test (peak force of 50 N) was conducted to examine the consistency and reliability of cyclic loads after completing the loading system.The loading system and an ElectroForce 3220 mechanical testing machine were respectively used to measure and compare the Young's modulus of a standard ultra-high molecular weight polyethylene (UHMWPE)cylinder to calibrate the loading system.Results The compressive loading test (peak force of 50 N) demonstrated that the mechanical loading system was able to apply consistent loads with controllable intensity and time.The calibration experiment indicated the accuracy of the loading system.Conclusion The novel mechanical loading device has characteristics of precision,scientificity and reliability,and it is approaching the real development situation of stress fracture,which may provide a reliable experimental base for exploring the precautionary measures of stress fracture.

Sequential Proximal Adjacent Spondylolysis by Pars Interarticularis Fracture in Elite Soccer Player / 대한스포츠의학회지

Pars interarticularis fracture is a common finding in young soccer players with low back pain. Spondylolysis in young adults involves a defect of the pars interarticularis, occurring as a result of repeated hyperextension and rotation. Here, we describe the case of a 26-year-old male elite soccer player who was diagnosed with L3 spondylolysis 2 years previously. He visited Incheon Himchan Hospital again because of low back pain. Radiographs showed consecutive spondylolysis at the L3 and L4 levels. Physicians should be aware that repeated performance of athletic movements, such as those during soccer, might lead to consecutive levels of spondylolysis.

Bilateral First Rib Stress Fractures with Pseudoarthrosis in a Young Weightlifter: A Rare Cause of Shoulder Pain / 대한스포츠의학회지

Isolated stress fracture of the first rib is quite rare cause of uncertain shoulder pain in athletes. These fractures are stress induced and precipitated by repeated traction of muscles acting on the first rib. A prompt diagnosis can shorten the time required for healing and decrease the risk of associated complication as nonunion or pseudoarthrosis. The diagnosis can be made by taking a thorough history and performing chest X-ray, computed tomography, or bone scan. Early recognition and proper management generally lead to successful outcomes and return to normal activities. Typically, they heal with conservative treatment with rest and mild analgesia. This report describes stress fractures of bilateral first rib in a weightlifter, one of which developed into a pseudoarthrosis as a result of persistent overhead activities due to missed diagnosis.

Stress fracture in acetabular roof due to motocross: case report / Fratura de estresse no teto acetabular por motocross: relato de caso

One of the first steps to be taken in order to reduce sports injuries such as stress fractures is to have in-depth knowledge of the nature and extent of these pathological conditions. We present a case report of a stress fracture of the acetabular roof caused through motocross. This type of case is considered rare in the literature. The description of the clinical case is as follows. The patient was a 27-year-old male who started to have medical follow-up because of uncharacteristic pain in his left hip, which was concentrated mainly in the inguinal region of the left hip during motocross practice. After clinical investigation and complementary tests, he was diagnosed with a stress fracture of the acetabular roof.

Um dos primeiros passos para se reduzirem lesões, como a fratura de estresse no esporte, é conhecermos e nos aprofundarmos no estudo da natureza e extensão dessa patologia. A seguir apresentamos um relato de caso de fratura de estresse no teto acetabular por motocross. Caso considerado raro na literatura consultada. Descrição do quadro clínico: paciente de 27 anos; masculino, iniciou seguimento médico por dores incaracterísticas no quadril esquerdo, concentradas principalmente na região inguinal do quadril esquerdo durante a prática de motocross. Após investigação clínica e por exames complementares, diagnosticou-se fratura de estresse no teto acetabular.

Trochanteric Stress Fracture in a Female Window Cleaner / 대한고관절학회지

Stress fractures may occur at various sites in the femur including the head, neck, shaft, supracondylar and condylar regions. To the best of our knowledge, stress fracture occurring in the trochanteric region has not been previously reported. We report here a case of trochanteric stress fracture in a 53-year-old female window cleaner treated with hip nailing without adverse consequences. Careful consideration of this entity is needed when evaluating patients who have repetitive jumping up and down.

The Operative Management of Navicular Stress Fractures in Adolescence / 대한족부족관절학회지

PURPOSE: The aim of this study is to evaluate the effectiveness of surgical treatment in adolescent patients suffering from navicular stress fracture. MATERIALS AND METHODS: A total of 11 adolescent patients aged 14 to 19, who underwent an operation for navicular stress fracture between 2005 and 2008 were recruited. Clinical outcomes were evaluated by the American Orthopaedic Foot and Ankle Society (AOFAS) midfoot score and visual analogue scale (VAS) score. RESULTS: The mean VAS score before the operation was 7.7. A score of 2.9 was confirmed at final follow up after the operation. The mean final follow-up period was 22.1 months. There was a statistically significant improvement in the VAS score between before and after the operation (p=0.01), and similarly, the AOFAS score also showed an improvement, from 46.5 to 80.7 (p=0.01). The pain that remained after the operation, according to the VAS score, was severe in three patients (27.3%), tolerable in seven patients (63.6%), and free of pain in one patient (9.1%). CONCLUSION: In navicular stress fracture in adolescents, careful selection of patients who could benefit from surgical treatment is recommended.

Stress Fracture of the Anterior Atlas Arch Following C1 Posterior Arch Resection for Cervical Myelopathy with Retro-Odontoid Pseudotumor / 대한정형외과학회잡지

Atlas fracture accounts for 1% to 3% of all spinal column injuries and 10% of cervical spine fractures, and is most frequently caused by motor vehicle accidents and falls. Only a few cases involving complications after surgical treatment have been reported. We present a case of anterior atlas arch stress fracture accompanied by worsening neurologic symptoms following atlas posterior arch resection for cervical myelopathy with retro-odontoid pseudotumor.