Accuracy of Hip Pericapsular Nerve Block (PENG) without Ultrasound Aid in Patients with Hip Pain.

Objective To describe and evaluate the accuracy of the pericapsular nerve group (PENG) block technique with no ultrasound guidance. Method Series of 40 infiltrations in patients with hip pain undergoing outpatient follow-up in the hip surgery group or admitted to the emergency room from a hospital in São Paulo, SP, Brazil. The hip PENG technique was guided by palpable anatomical pelvic structures, with no ultrasound orientation for needle positioning, using the equipment only to check the correct location after an unguided puncture. Results In the 40 hips infiltrated from 35 patients with a mean age of 59.2 years, the success rate was 85%. Among the mispositioned cases, 71.4% occurred in the first 13 applications and 28.6% in the subsequent 27 applications. In all patients, the neurovascular bundle was in the medial third of the pen-made demarcation. Even in cases with a failed needle location, the distance from the neurovascular bundle was safe. A single adverse effect occurred, with spontaneous improvement of the femoral nerve apraxia within two days. Conclusion Unguided PENG block is a viable technique for a physician knowledgeable about its application in services with no ultrasound availability.

Block of the Pericapsular Nerve Group of the Hip with and without Ultrasound Guidance: Comparative Cadaveric Study.

Objective To evaluate the technical reproducibility of a block of the pericapsular nerve group (PENG) of the hip aided or not by ultrasound in cadavers. Materials and Methods The present is a randomized, descriptive, and comparative anatomical study on 40 hips from 2 cadaver groups. We compared the PENG block technique with the method with no ultrasound guidance. After injecting a methylene blue dye, we verified the dispersion and topographical staining of the anterior hip capsule through dissection. In addition, we evaluated the injection orifice in both techniques. Results In the comparative analysis of the techniques, there were no puncture failures, damage to noble structures in the orifice path, or differences in the results. Only 1 hip from each group (5%) presented inadequate dye dispersion within the anterior capsule, and in 95% of the cases submitted to either technique, there was adequate dye dispersion at the target region. Conclusion Hip PENG block with no ultrasound guidance is feasible, safe, effective, and highly reliable compared to its conventional counterpart. The present is a pioneer study that can help patients with hip pain from various causes in need of relief.

Block of the Pericapsular Nerve Group of the Hip with and without Ultrasound Guidance: Comparative Cadaveric Study / Bloqueio do grupo de nervos pericapsulares do quadril com e sem auxílio de ultrassonografia: Estudo cadavérico comparativo

Abstract Objective To evaluate the technical reproducibility of a block of the pericapsular nerve group (PENG) of the hip aided or not by ultrasound in cadavers. Materials and Methods The present is a randomized, descriptive, and comparative anatomical study on 40 hips from 2 cadaver groups. We compared the PENG block technique with the method with no ultrasound guidance. After injecting a methylene blue dye, we verified the dispersion and topographical staining of the anterior hip capsule through dissection. In addition, we evaluated the injection orifice in both techniques. Results In the comparative analysis of the techniques, there were no puncture failures, damage to noble structures in the orifice path, or differences in the results. Only 1 hip from each group (5%) presented inadequate dye dispersion within the anterior capsule, and in 95% of the cases submitted to either technique, there was adequate dye dispersion at the target region. Conclusion Hip PENG block with no ultrasound guidance is feasible, safe, effective, and highly reliable compared to its conventional counterpart. The present is a pioneer study that can help patients with hip pain from various causes in need of relief.

Resumo Objetivo Propor e avaliar a reprodutibilidade técnica do bloqueio do grupo de nervos pericapsulares (pericapsular nerve group, PENG, em inglês) do quadril sem o auxílio da ultrassonografia, em cadáveres, de forma comparativa à realização do bloqueio guiado pela ultrassonografia em outro grupo de cadáveres. Materiais e Métodos Estudo anatômico randomizado, descritivo e comparativo, realizado em 40 quadris divididos em 2 grupos amostrais de cadáveres. Fez-se uma comparação da técnica do bloqueio do PENG à técnica não guiada por ultrassonografia injetando-se corante azul de metileno, seguida de dissecção para verificação da dispersão e da coloração topográfica da cápsula anterior do quadril, além de avaliação do pertuito das injeções entre as técnicas. Resultados Na análise comparativa das técnicas, não houve falha na punção, lesão de estruturas nobres no pertuito, ou diferença nos resultados. Não houve adequada dispersão do corante pela cápsula anterior somente em 1 quadril de cada grupo (5%), e em 95% dos casos submetidos a qualquer uma das técnicas observou-se dispersão adequada do corante pela região alvo. Conclusão O bloqueio do PENG do quadril sem auxílio de ultrassonografia é factível, seguro, eficaz, e com alta confiabilidade quando comparado à sua realização guiada pelo aparelho de imagem. Este estudo é pioneiro, e pode ajudar muito os pacientes que têm dor no quadril por diversas causas e necessitam alívio.

Accuracy of Hip Pericapsular Nerve Block (PENG) without Ultrasound Aid in Patients with Hip Pain / Acurácia do bloqueio dos nervos pericapsulares (PENG) do quadril sem auxílio de ultrassonografia em pacientes com dor no quadril

Abstract Objective To describe and evaluate the accuracy of the pericapsular nerve group (PENG) block technique with no ultrasound guidance. Method Series of 40 infiltrations in patients with hip pain undergoing outpatient follow-up in the hip surgery group or admitted to the emergency room from a hospital in São Paulo, SP, Brazil. The hip PENG technique was guided by palpable anatomical pelvic structures, with no ultrasound orientation for needle positioning, using the equipment only to check the correct location after an unguided puncture. Results In the 40 hips infiltrated from 35 patients with a mean age of 59.2 years, the success rate was 85%. Among the mispositioned cases, 71.4% occurred in the first 13 applications and 28.6% in the subsequent 27 applications. In all patients, the neurovascular bundle was in the medial third of the pen-made demarcation. Even in cases with a failed needle location, the distance from the neurovascular bundle was safe. A single adverse effect occurred, with spontaneous improvement of the femoral nerve apraxia within two days. Conclusion Unguided PENG block is a viable technique for a physician knowledgeable about its application in services with no ultrasound availability.

Resumo Objetivo Descrever e avaliar a acurácia da técnica do bloqueio PENG realizado sem auxílio de ultrassonografia. Método Série de 40 infiltrações em pacientes com dor no quadril, em acompanhamento ambulatorial no grupo de cirurgia do quadril ou admitidos no pronto atendimento de um hospital na cidade de São Paulo. Utilizada a técnica de bloqueio nervoso pericapsular do quadril (PENG) guiado por estruturas anatômicas palpáveis da pelve e sem auxílio de ultrassonografia no posicionamento da agulha, usando o aparelho apenas para conferência da localização correta após punção não guiada. Resultados Nos 40 quadris infiltrados em 35 pacientes com idade média de 59,2 anos, obtivemos um índice de acerto de 85%. Dos casos mal posicionados 71,4% ocorreram nas primeiras 13 aplicações e 28,6% nas 27 aplicações subsequentes. Em todos os pacientes o feixe neurovascular estava situado no terço medial da marcação realizada à caneta e mesmo nos casos em que houve falha da localização da agulha havia distância segura ao feixe neurovascular. Obtivemos apenas 1 caso de efeito adverso, onde ocorreu apraxia do nervo femoral com melhora espontânea em 2 dias. Conclusão O bloqueio PENG não guiado é uma técnica viável e pode ser realizada por um médico que já possui conhecimento na aplicação, em serviços onde não haja disponibilidade do aparelho de ultrassonografia.

Correlation between Intensity of Pain and Disability Due to Intra-articular Lesions in Patients with Femoroacetabular Impingement Syndrome.

Objective To correlate radiographic alterations and lesions in intra-articular structures of the acetabulum with the intensity of pain and disability of patients diagnosed with femoroacetabular impingement syndrome. Methods A retrospective analysis of the preoperative data of 182 patients (190 hips) was performed. Clinical variables such as age, gender, the practice of physical activity, and radiographic variables, such as the Wiberg and alpha angles, were evaluated. Through an intraoperative video, the extent of the chondral and labial lesions was evaluated considering the clock-face method, the degree of joint involvement by the Outerbridge classification, and the presence of wave lesions. The variables were analyzed by linear regression, with the intensity of the pain assessed by the Visual Analog Scale (VAS), and functional disability measured by the Modified Harris Hip Score (mHHS). Results The mean age of the patients was of 38.5 ± 9.6 years, the mean intensity of the pain was of 7.8 ± 1.6, and the mean mHHS score was of 56.3 ± 12.7. In total, 61% of the sample were classified as Outerbridge III or IV, and 12.6% had wave lesions. There was a correlation between the male gender (r = 0.497) and lower intensity of the pain, and a correlation of age (r = -0.27), the male gender (r = 8.419) and physical activity with higher functional scores on the mHHS (r = 4.729). Conclusion There was no correlation of the radiographic and arthroscopic parameters of the present study and the intensity of pain and the disability of the patients. The male gender is related to lower intensity of pain, and higher functional ability is related to the male gender, lower age, and the practice of physical activity. Level of Evidence IV.

Correlation between Intensity of Pain and Disability Due to Intra-articular Lesions in Patients with Femoroacetabular Impingement Syndrome / Correlação entre intensidade da dor e incapacidade com as lesões intra-articulares em pacientes com síndrome do impacto femoroacetabular

Abstract Objective To correlate radiographic alterations and lesions in intra-articular structures of the acetabulum with the intensity of pain and disability of patients diagnosed with femoroacetabular impingement syndrome. Methods A retrospective analysis of the preoperative data of 182 patients (190 hips) was performed. Clinical variables such as age, gender, the practice of physical activity, and radiographic variables, such as the Wiberg and alpha angles, were evaluated. Through an intraoperative video, the extent of the chondral and labial lesions was evaluated considering the clock-face method, the degree of joint involvement by the Outerbridge classification, and the presence of wave lesions. The variables were analyzed by linear regression, with the intensity of the pain assessed by the Visual Analog Scale (VAS), and functional disability measured by the Modified Harris Hip Score (mHHS). Results The mean age of the patients was of 38.5 ± 9.6 years, the mean intensity of the pain was of 7.8 ± 1.6, and the mean mHHS score was of 56.3 ± 12.7. In total, 61% of the sample were classified as Outerbridge III or IV, and 12.6% had wave lesions. There was a correlation between the male gender (r = 0.497) and lower intensity of the pain, and a correlation of age (r = -0.27), the male gender (r = 8.419) and physical activity with higher functional scores on the mHHS (r = 4.729). Conclusion There was no correlation of the radiographic and arthroscopic parameters of the present study and the intensity of pain and the disability of the patients. The male gender is related to lower intensity of pain, and higher functional ability is related to the male gender, lower age, and the practice of physical activity. Level of Evidence IV.

Resumo Objetivo Correlacionar alterações radiográficas e lesões de estruturas intra-articulares do acetábulo com a intensidade da dor e a incapacidade de pacientes com diagnóstico de síndrome do impacto femoroacetabular. Métodos Realiou-se uma análise retrospectiva de dados pré-operatórios de 182 pacientes (190 quadris). Foram avaliadas variáveis clínicas como idade, sexo e prática de atividade física, e variáveis radiográficas, como ângulo de Wiberg e o ângulo alfa. Por meio do vídeo intraoperatório, foi avaliada a extensão das lesões condrais e labiais considerando-se o método clock-face, o grau de comprometimento articular pela classificação de Outerbridge, e a presença de lesão em onda. As variáveis foram analisadas por meio de regressão linear, tendo como variáveis dependentes a intensidade da dor, avaliada pela Escala Visual Analógica (EVA), e a incapacidade funcional, mensurada pelo Harris Hip Score modificado (HHSm). Resultados A média de idade dos pacientes foi de 38,5 ± 9,6 anos, a da intensidade da dor, 7,8 ± 1,6, e a do HHSm, 56,3 ± 12,7. No total, 61% da amostra apresentava Outerbridge III ou IV, e 12,6% apresentava lesão em onda. Observou-se correlação do sexo masculino (r = 0,497) com menor intensidade da dor, e correlação da idade (r = −0,27), do sexo masculino (r = 8,419) e da realização de atividade física com maior escore funcional no HHSm (r = 4,729). Conclusão Não houve correlação dos parâmetros radiográficos e artroscópicos deste estudo com a intensidade da dor e a incapacidade dos pacientes. O sexo masculino está relacionado com menor intensidade da dor, e maior capacidade funcional está relacionada com o sexo masculino, menor idade, e a prática de atividade física. Nível de Evidência IV.

Is There Any Difference Between a Spherical Marker and a Simple Coin for Hip Replacement Digital Planning?

Objective To evaluate the accuracy and differences between 2 types of metallic markers, sphere, and coin, for radiographic calibration in the preoperative planning of hip arthroplasty. Methods Four spherical metallic markers and four coins, both 25 mm in diameter, were placed on the greater trochanter, pubic symphysis, between the thighs, and on the table of the exam, for radiographic examination of the hip in 33 patients with hip prosthesis. The prosthesis head was used for calibration and two examiners measured the markers' image diameters, and the results were analyzed statistically. Results In the greater trochanter, the sphere and the coin were not visualized in 19 radiographs (57.6%). Between the thighs, the coin marker was not visualized in 13 radiographs (39.4%). In the greater trochanter, the 25-mm accuracy of the coin and the sphere was, respectively, between 57.1 and 63.3% and between 64.3 and 92.9%. The coin between the thighs reached 25-mm accuracy in between 50 and 60% of cases. Over the exam table, the coin and sphere markers reached, respectively, the mean diameters of 22.91 mm and 23 mm, the lowest coefficient of variation, the lowest confidence interval, and the easiest positioning. There was statistical difference between the evaluations of the markers (coin vs. sphere) in all positions ( p < 0.032), except for the exam table position ( p = 0.083). Conclusions The coin between the thighs is the best marker for radiographic calibration in the preoperative planning of hip arthroplasty, and we suggest the use of another coin on the exam table for comparison, considering the 8% reduction in relation to its real size.

Is There Any Difference Between a Spherical Marker and a Simple Coin for Hip Replacement Digital Planning? / Existe alguma diferença entre um marcador esférico e uma moeda simples para planejamento digital de substituição de quadril?

Abstract Objective To evaluate the accuracy and differences between 2 types of metallic markers, sphere, and coin, for radiographic calibration in the preoperative planning of hip arthroplasty. Methods Four spherical metallic markers and four coins, both 25 mm in diameter, were placed on the greater trochanter, pubic symphysis, between the thighs, and on the table of the exam, for radiographic examination of the hip in 33 patients with hip prosthesis. The prosthesis head was used for calibration and two examiners measured the markers' image diameters, and the results were analyzed statistically. Results In the greater trochanter, the sphere and the coin were not visualized in 19 radiographs (57.6%). Between the thighs, the coin marker was not visualized in 13 radiographs (39.4%). In the greater trochanter, the 25-mm accuracy of the coin and the sphere was, respectively, between 57.1 and 63.3% and between 64.3 and 92.9%. The coin between the thighs reached 25-mm accuracy in between 50 and 60% of cases. Over the exam table, the coin and sphere markers reached, respectively, the mean diameters of 22.91 mm and 23 mm, the lowest coefficient of variation, the lowest confidence interval, and the easiest positioning. There was statistical difference between the evaluations of the markers (coin vs. sphere) in all positions (p< 0.032), except for the exam table position (p= 0.083). Conclusions The coin between the thighs is the best marker for radiographic calibration in the preoperative planning of hip arthroplasty, and we suggest the use of another coin on the exam table for comparison, considering the 8% reduction in relation to its real size.

Resumo Objetivo Avaliar a precisão e as diferenças entre 2 tipos de marcadores metálicos, esfera e moeda, para calibração radiográfica no planejamento pré-operatório da artroplastia de quadril. Métodos Quatro marcadores metálicos esféricos e quatro moedas, ambas de 25 mm de diâmetro, foram colocadas em trocânter maior, sínfise púbica, entre as coxas e a mesa do exame, para exame radiográfico do quadril em 33 pacientes com prótese de quadril. A cabeça da prótese foi utilizada para calibração e dois examinadores mediram os diâmetros da imagem dos marcadores, e os resultados foram analisados estatisticamente. Resultados No trocânter maior, a esfera e a moeda não foram visualizadas em 19 radiografias (57,6%). Entre as coxas, o marcador de moeda não foi visualizado em 13 radiografias (39,4%). No trocânter maior, a precisão de 25 mm da moeda e da esfera foi, respectivamente, entre 57,1 e 63,3% e entre 64,3 e 92,9%. A moeda entre as coxas atingiu 25 mm de precisão entre 50 e 60%. Sobre a mesa de exame, os marcadores de moeda e esfera atingiram, respectivamente, diâmetros médios de 22,91 mm e 23 mm, o menor coeficiente de variação, o menor intervalo de confiança e o posicionamento mais fácil. Houve diferença estatística entre as avaliações dos marcadores (moeda vs. esfera) em todas as posições (p< 0,032), com exceção da posição na mesa de exame (p= 0,083). Conclusões A moeda entre as coxas é o melhor marcador para calibração radiográfica no planejamento pré-operatório da artroplastia de quadril, e sugerimos o uso de outra moeda na mesa de exame para comparação, considerando os 8% de redução em relação ao seu tamanho real.

Correlation between the range of rotation of the hip and the radiographic signs of cam and pincer morphology in femoroacetabular impingement syndrome.

OBJECTIVE: To determine whether hip rotation correlates with the radiographic signs of cam or pincer deformity after hip arthroscopy in patients with femoroacetabular impingement syndrome. MATERIALS AND METHODS: This was a single-center retrospective study of data collected between 2014 and 2017. The study sample included 65 patients between 18 and 55 years of age who underwent hip arthroscopy for the treatment of unilateral femoroacetabular impingement. The following data were collected for the periods prior to and six months after surgery range of medial and lateral rotation of the hip; measures on anteroposterior X-rays of the pelvis obtained in the standing position and on ateral X-rays in the Ducroquet profile view; and score on the 33-item International Hip Outcome Tool. RESULTS: Mean preoperative and postoperative values were as follows: 19.26 ± 10.39° and 30.95 ± 3.52°, respectively, for medial rotation of the hip (p < 0.001); 73.85 ± 6.62° and 68.12 ± 5.04°, respectively, for the anteroposterior alpha angle (p < 0.001); 56.97 ± 6.09° and 50.61 ± 5.39°, respectively, for the lateral alpha angle (p < 0.001); and 0.17 ± 0.11 and 0.07 ± 0.08, respectively, for the acetabular retroversion index (p < 0.001). The crossover sign was identified in 75.4% of the patients before surgery and in 44.6% after (p < 0.001). Although there was an increase in the range of hip rotation and an improvement in radiographic parameters after arthroscopy, we detected no direct correlation between the two. CONCLUSION: Hip arthroscopy can improve medial rotation of the hip, as well as reducing cam and pincer deformities, in patients with femoroacetabular impingement syndrome. However, those findings do not appear to be directly correlated.

OBJETIVO: Correlacionar rotação medial do quadril com sinais radiográficos came e pincer de pacientes com síndrome do impacto femoroacetabular submetidos a artroscopia. MATERIAIS E MÉTODOS: Estudo retrospectivo com prontuários consecutivos de 2014 a 2017 em único centro. O estudo incluiu 65 pacientes com impacto femoroacetabular unilateral, de ambos os sexos e idade entre 18 e 55 anos, com indicação de artroscopia do quadril. Os dados colhidos no pré-operatório e pós-operatório de seis meses foram: amplitude de rotação medial e rotação lateral do quadril, mensurações de radiografia anteroposterior da pelve em ortostatismo e perfil de Ducroquet, escala visual analógica de dor e questionário de qualidade de vida International Hip Outcome Tool 33. RESULTADOS: A amplitude pré-operatória de rotação medial do quadril foi, em média, 19,26 ± 10,39°, e pós-operatória, 30,95 ± 3,52° (p < 0,001). Para ângulo alfa anteroposterior, o valor médio pré-operatório foi 73,85 ± 6,62°, e após cirurgia, 68,12 ± 5 , 0 4 ° ( p < 0,001). Já o ângulo alfa perfil pré - operatório e pós- operatório foi, respectivamente, 56,97 ± 6,09° e 50,61 ± 5,39° (p < 0,001). O sinal do cruzamento foi presente em 75,40% (pré-cirurgia) e após cirurgia em 44,60% (p < 0,001). O índice de retroversão acetabular pré-operatório, em média, foi 0,17 ± 0,11, e pós-operatório, 0,07 ± 0,08 (p < 0,001). Embora tenham sido observados aumento na amplitude de rotação do quadril e melhora dos parâmetros radiográficos após artroscopia, não houve correlação direta entre as variáveis. CONCLUSÃO: A artroscopia do quadril pode promover normalização da amplitude de rotação medial do quadril e redução dos sinais radiográficos came e pincer nos pacientes com síndrome do impacto femoroacetabular, porém, estes achados não possuem correlação direta.

Correlation between the range of rotation of the hip and the radiographic signs of cam and pincer morphology in femoroacetabular impingement syndrome / Correlação entre amplitude de rotação do quadril e sinais radiográficos came e pincer na síndrome do impacto femoroacetabular

Abstract Objective: To determine whether hip rotation correlates with the radiographic signs of cam or pincer deformity after hip arthroscopy in patients with femoroacetabular impingement syndrome. Materials and Methods: This was a single-center retrospective study of data collected between 2014 and 2017. The study sample included 65 patients between 18 and 55 years of age who underwent hip arthroscopy for the treatment of unilateral femoroacetabular impingement. The following data were collected for the periods prior to and six months after surgery range of medial and lateral rotation of the hip; measures on anteroposterior X-rays of the pelvis obtained in the standing position and on ateral X-rays in the Ducroquet profile view; and score on the 33-item International Hip Outcome Tool. Results: Mean preoperative and postoperative values were as follows: 19.26 ± 10.39° and 30.95 ± 3.52°, respectively, for medial rotation of the hip (p < 0.001); 73.85 ± 6.62° and 68.12 ± 5.04°, respectively, for the anteroposterior alpha angle (p < 0.001); 56.97 ± 6.09° and 50.61 ± 5.39°, respectively, for the lateral alpha angle (p < 0.001); and 0.17 ± 0.11 and 0.07 ± 0.08, respectively, for the acetabular retroversion index (p < 0.001). The crossover sign was identified in 75.4% of the patients before surgery and in 44.6% after (p < 0.001). Although there was an increase in the range of hip rotation and an improvement in radiographic parameters after arthroscopy, we detected no direct correlation between the two. Conclusion: Hip arthroscopy can improve medial rotation of the hip, as well as reducing cam and pincer deformities, in patients with femoroacetabular impingement syndrome. However, those findings do not appear to be directly correlated.

RESUMO Objetivo: Correlacionar rotação medial do quadril com sinais radiográficos came e pincer de pacientes com síndrome do impacto femoroacetabular submetidos a artroscopia. Materiais e Métodos: Estudo retrospectivo com prontuários consecutivos de 2014 a 2017 em único centro. O estudo incluiu 65 pacientes com impacto femoroacetabular unilateral, de ambos os sexos e idade entre 18 e 55 anos, com indicação de artroscopia do quadril. Os dados colhidos no pré-operatório e pós-operatório de seis meses foram: amplitude de rotação medial e rotação lateral do quadril, mensurações de radiografia anteroposterior da pelve em ortostatismo e perfil de Ducroquet, escala visual analógica de dor e questionário de qualidade de vida International Hip Outcome Tool 33. Resultados: A amplitude pré-operatória de rotação medial do quadril foi, em média, 19,26 ± 10,39°, e pós-operatória, 30,95 ± 3,52° (p < 0,001). Para ângulo alfa anteroposterior, o valor médio pré-operatório foi 73,85 ± 6,62°, e após cirurgia, 68,12 ± 5 , 0 4 ° ( p < 0,001). Já o ângulo alfa perfil pré - operatório e pós- operatório foi, respectivamente, 56,97 ± 6,09° e 50,61 ± 5,39° (p < 0,001). O sinal do cruzamento foi presente em 75,40% (pré-cirurgia) e após cirurgia em 44,60% (p < 0,001). O índice de retroversão acetabular pré-operatório, em média, foi 0,17 ± 0,11, e pós-operatório, 0,07 ± 0,08 (p < 0,001). Embora tenham sido observados aumento na amplitude de rotação do quadril e melhora dos parâmetros radiográficos após artroscopia, não houve correlação direta entre as variáveis. Conclusão: A artroscopia do quadril pode promover normalização da amplitude de rotação medial do quadril e redução dos sinais radiográficos came e pincer nos pacientes com síndrome do impacto femoroacetabular, porém, estes achados não possuem correlação direta.

Greater trochanteric pain syndrome in women: Analysis of magnetic resonance, sagittal alignment, muscular strength and endurance of the hip and trunk.

INTRODUCTION: There are many studies on the Greater Trochanteric Pain Syndrome (GTPS), however its relationship with radiographic and biomechanics parameters is not established. OBJECTIVE: To compare the magnetic resonance images (MRI) of the hip, radiographic parameters of sagittal alignment (pelvic incidence, sacral slope and lumbar lordosis), muscular strength and endurance in women with and without GTPS. METHODS: Forty women, age over 45, IMC <30 Kg/m2 and sedentary, were recruited and distributed in two groups: GTPS group (GTPSG, n = 20) and Control group (CG, n = 20). All participants underwent MRI scans and X-ray for sagittal alignment analysis in the hip and performed tests for muscular strength and endurance of the hip and trunk. RESULTS: No differences were found between the GTPSG and CG for the frequency of tendinopathy (P = .30), peritendinitis (P = .10), bursitis (P = .68) and enthesitis (P = .15), however the gluteus medius tendon tear was more prevalent in GTPSG (P = .05). There were no differences in radiographic parameters for pelvic incidence (P > .05), sacral slope (P > .05) and lumbar lordosis (P > .05). The GTPSG showed lower strength of all hip muscle groups (abductors, adductors, flexors, extensors and rotators; P < .01 for all), as well as lower endurance in the Supine Bridge test and Prone bridge test (P < .01). CONCLUSION: The results of the MRI and radiographic parameters did not differentiate women with and without GTPS. However, the evaluation of muscle strength and endurance can establish the difference between groups.

Patient Education in Orthopedics: the Role of Information Design and User Experience.

PURPOSE OF REVIEW: This narrative review will focus on concepts and methods of Information Design and User Experience for patient education in orthopedics, with osteoarthritis as an application example. RECENT FINDINGS: Information design can make complex health information clear according to the needs of the patients. Digital health presents new opportunities to design scalable educational interventions and may be improved with User Experience Design. Human-centered design methods such as user research, co-design, and prototype testing are being applied in orthopedics to achieve patient-centered care. Current international guidelines on osteoarthritis put patient education as one of the key care strategies. Educational interventions target preoperative education and osteoarthritis self-management, but current models could be enhanced. Patient education and health literacy are fundamental to face the burden of musculoskeletal pain. The collaboration between design and health is essential to deal with the demand for education, behavioral, and social change.

Femoroacetabular Impingement and Acetabular Labral Tears - Part 1: Pathophysiology and Biomechanics.

Femoroacetabular impingement (FAI) is an important cause of hip pain, and the main etiology of hip osteoarthritis in the young population. Femoroacetabular impingement is characterized by subtle alterations in the anatomy of the acetabulum and proximal femur, which can lead to labrum tearing. The acetabular labrum is essential to the stability of the hip joint. Three types of FAI were described: cam (anespherical femoral head), pincer (acetabular overcoverage) and mixed (characteristics of both cam and pincer). The etiology of FAI is related to genetic and environmental characteristics. Knowledge of this condition is essential to adequately treat patients presenting with hip pain.

Femoroacetabular Impingement and Acetabular Labral Tears - Part 3: Surgical Treatment.

In the last 15 years, the diagnosis of femoroacetabular impingement has become more frequent; with the advance of surgical indications, different techniques have been developed. Surgical treatment includes a wide variety of options, namely: periacetabular osteotomy, surgical hip dislocation, arthroscopy with osteochondroplasty via a small incision, modified anterior approach technique, and exclusively arthroscopic technique. The type of approach should be chosen according to the complexity of the morphology of the femoroacetabular impingement and to the surgeon's training. The techniques most used today are arthroscopy, surgical dislocation of the hip, and periacetabular osteotomy. The present article aims to describe the current main surgical techniques used to treat femoroacetabular impingement, their indications, advantages and disadvantages, complications and clinical results.

Femoroacetabular Impingement and Acetabular Labral Tears - Part 2: Clinical Diagnosis, Physical Examination and Imaging.

The clinical diagnosis of femoral acetabular impingement (FAI) continues to evolve as the understanding of normal and pathological hips progresses. Femoral acetabular impingement is currently defined as a syndrome in which the diagnosis consists of the combination of a previously-obtained comprehensive clinical history, followed by a consistent and standardized physical examination with specific orthopedic maneuvers. Additionally, radiographic and tomographic examinations are used for the morphological evaluation of the hip, and to ascertain the existence of sequelae of childhood hip diseases and the presence of osteoarthritis. The understanding of the femoral and acetabular morphologies and versions associated with images of labral and osteochondral lesions obtained through magnetic resonance imaging (MRI) contributes to the confirmation of this syndrome in symptomatic patients, and helps in the exclusion of differential diagnoses such as iliopsoas tendon snaps, subspine impingement, ischiofemoral impingement, and other hip joint pathologies.

Femoroacetabular Impingement and Acetabular Labral Tears - Part 2: Clinical Diagnosis, Physical Examination and Imaging / Impacto femoroacetabular e lesão do lábio acetabular - Parte 2: Diagnóstico clínico, exame físico e imagiologia

Abstract The clinical diagnosis of femoral acetabular impingement (FAI) continues to evolve as the understanding of normal and pathological hips progresses. Femoral acetabular impingement is currently defined as a syndrome in which the diagnosis consists of the combination of a previously-obtained comprehensive clinical history, followed by a consistent and standardized physical examination with specific orthopedic maneuvers. Additionally, radiographic and tomographic examinations are used for the morphological evaluation of the hip, and to ascertain the existence of sequelae of childhood hip diseases and the presence of osteoarthritis. The understanding of the femoral and acetabular morphologies and versions associated with images of labral and osteochondral lesions obtained through magnetic resonance imaging (MRI) contributes to the confirmation of this syndrome in symptomatic patients, and helps in the exclusion of differential diagnoses such as iliopsoas tendon snaps, subspine impingement, ischiofemoral impingement, and other hip joint pathologies.

Resumo O diagnóstico clínico do impacto femoroacetabular continua a evoluir conforme o entendimento dos quadris normal e patológico progride. Impacto femoroacetabular é atualmente definido como uma síndrome na qual o diagnóstico se baseia no somatório de uma história clínica abrangente obtida previamente, seguida de um exame físico coerente e padronizado com manobras ortopédicas específicas. Além disso, exames radiográficos e tomográficos são usados para a avaliação morfológica do quadril, e para verificar a existência de sequelas de doenças do quadril da infância e a presença de osteoartrose. O entendimento da morfologia e versão femoral e acetabular associado às imagens de lesões labrais e osteocondrais obtidas com a ressonância magnética contribuem para a confirmação da síndrome nos pacientes sintomáticos, além de auxiliar na exclusão de diagnósticos diferenciais, como ressalto do tendão do músculo iliopsoas, impacto subespinhal, impacto isquiofemoral, e outras patologias da articulação do quadril.

Femoroacetabular Impingement and Acetabular Labral Tears - Part 1: Pathophysiology and Biomechanics / Impacto femoroacetabular e lesão do lábio acetabular - Parte 1: Fisiopatologia e biomecânica

Abstract Femoroacetabular impingement (FAI) is an important cause of hip pain, and the main etiology of hip osteoarthritis in the young population. Femoroacetabular impingement is characterized by subtle alterations in the anatomy of the acetabulum and proximal femur, which can lead to labrum tearing. The acetabular labrum is essential to the stability of the hip joint. Three types of FAI were described: cam (anespherical femoral head), pincer (acetabular overcoverage) and mixed (characteristics of both cam and pincer). The etiology of FAI is related to genetic and environmental characteristics. Knowledge of this condition is essential to adequately treat patients presenting with hip pain.

Resumo O impacto femoroacetabular (IFA) é uma importante causa de dor no quadril, e a principal etiologia da osteoartrose do quadril no jovem. O IFA é caracterizado por alterações sutis da anatomia do acetábulo e do fêmur proximal que podem causar lesões do complexo condrolabial. O lábio é uma estrutura fibrocartilaginosa essencial na estabilidade articular. Três tipos de IFA são descritos: came (onde há uma anesfericidade da cabeça femoral), pincer (onde há uma sobrecobertura acetabular) e misto (que apresenta características de ambos). A etiologia do IFA está relacionada com características genéticas e ambientais. O conhecimento desta doença e sua fisiopatologia é essencial para o tratamento de pacientes que apresentam dor no quadril.

Femoroacetabular Impingement and Acetabular Labral Tears - Part 3: Surgical Treatment / Impacto femoroacetabular e lesão do lábio acetabular - Parte 3: Tratamento cirúrgico

Abstract In the last 15 years, the diagnosis of femoroacetabular impingement has become more frequent; with the advance of surgical indications, different techniques have been developed. Surgical treatment includes a wide variety of options, namely: periacetabular osteotomy, surgical hip dislocation, arthroscopy with osteochondroplasty via a small incision, modified anterior approach technique, and exclusively arthroscopic technique. The type of approach should be chosen according to the complexity of the morphology of the femoroacetabular impingement and to the surgeon's training. The techniques most used today are arthroscopy, surgical dislocation of the hip, and periacetabular osteotomy. The present article aims to describe the current main surgical techniques used to treat femoroacetabular impingement, their indications, advantages and disadvantages, complications and clinical results.

Resumo Nos últimos 15 anos, o diagnóstico do impacto femoroacetabular tem se tornado cada vez mais frequente; com o avanço do entendimento de quais pacientes potencialmente se beneficiariam do tratamento cirúrgico, diferentes técnicas foram desenvolvidas. O tratamento cirúrgico inclui grande variedade de opções, sendo elas: osteotomia periacetabular, técnica de luxação cirúrgica do quadril, artroscopia com osteocondroplastia via pequena incisão, técnica via anterior modificada, e técnica exclusivamente artroscópica. O tipo de abordagem deve ser escolhido de acordo com a complexidade da morfologia do impacto femoroacetabular e com o treinamento do cirurgião. As técnicas mais utilizadas atualmente são a artroscopia, a luxação cirúrgica do quadril e a osteotomia periacetabular. O presente artigo busca descrever as principais técnicas cirúrgicas utilizadas para o tratamento do impacto femoroacetabular, suas indicações, vantagens e desvantagens, complicações e resultados clínicos.

Errata - Is it Important to Know Where to Place the Spherical Marker for Hip Replacement Digital Planning??

[This corrects the article DOI: 10.1055/s-0039-1693052.][This corrects the article DOI: 10.1055/s-0039-1693052.].

Is it Important to Know Where to Place the Spherical Marker for Hip Replacement Digital Planning?

Objective The present paper aims to evaluate the influences of individual characteristics in radiographic magnification and to identify the most accurate method for radiographic calibration. Methods During radiographical exam of 50 patients with hip prosthesis, anthropometric data was collected and 4 spherical metal markers with 25 mm diameters were positioned: at the greater trochanter level and lateral to it, over the pubic symphysis, between the thighs at the greater trochanter level, and over the exam table. Since the prosthesis head is the best internal radiographic marker for hip arthroplasty, it was our calibration parameter. Two examiners measured the markers' image for further analysis. Results The sample consisted of 50 participants, 19 of whom were male. A difference in pubic symphysis magnification was found. Other individual characteristics (weight, height and body mass index) had weak correlation. The higher accuracy of the markers was at the greater trochanter, between 68.4 and 78.9%, visualized in only19 radiographs. The marker positioned between the thighs was visualized in all radiographs, with an accuracy ranging from 30 to 46%. Conclusions Of all individual characteristics, only gender influences magnification at the pubic symphysis. We suggest the use of two spherical markers: at the greater trochanter, due the best accuracy, and between the thighs, considered the best positioning for better visibility.