Introduction: Inequality in the length of the lower limbs has an impact on the stability and function of the musculoskeletal system because of the imbalance it causes in our bodies. Several treatment modalities were u...Introduction: Inequality in the length of the lower limbs has an impact on the stability and function of the musculoskeletal system because of the imbalance it causes in our bodies. Several treatment modalities were used by practitioners. The aim of this study was to evaluate the anatomical and functional results of length equalisation of the lower limbs using internal osteosynthesis in the Orthopaedic and Traumatological Surgery Department of the Amirou Boubacar Diallo National Hospital in Niamey. Patients and method: This was a retrospective, prospective study of 22 patients from January 2010 to November 2015, a period of 5 years. The patients concerned were aged at least 18 years and had undergone a femoral shortening osteotomy not exceeding 5 cm on the contralateral healthy limb with a screw plate as the internal osteosynthesis device. Results: The average age of our patients was 24.18 years (18 to 48 years). The etiologies of these length inequalities were: vascular 54.55% (n = 12), post-traumatic 27.27% (n = 6), post-infectious 13.64% (n = 3) and neuromuscular 4.54% (n = 1). The mean length inequality of our patients was 4.93 cm, with extremes ranging from 4 to 8 cm. At an average follow-up of 6.5 months (6 to 24 months), our functional results were satisfactory overall. Discussion: Despite the significant nature of our initial inequalities, which were moderate and severe, we ended up with slight inequalities or even total correction for some of our patients. Conclusion: Inequality in the length of the lower limbs is a handicap that requires appropriate management.展开更多
Background： For a child with osteosarcoma, prediction of the limb length discrepancy at maturity is important when planning for limb salvage surgery. The purpose of this study was to provide a reliable prediction met...Background： For a child with osteosarcoma, prediction of the limb length discrepancy at maturity is important when planning for limb salvage surgery. The purpose of this study was to provide a reliable prediction method. Methods： A retrospective review of Chinese children receiving chemotherapy for osteosarcoma before skeletal maturity was conducted. Standing full-length radiographs of the lower extremity were used for length measurements. Length-for-age curves were constructed using the LMS method. The lower limb multiplier for a specific age and gender was calculated using the formula M =Lm/L, where M was the gender- and age-specific multiplier, Lm was the bone length at maturity, and L was the age-specific bone length. Prematurity and postmaturity radiographs were used to assess the accuracy of the prediction methods. Results： A total of 513 radiographs of 131 boys and 314 radiographs of 86 girls were used to calculate the coefficients of the multiplier. The multipliers of 8-, 9-, 10-, 11-, 12-, 13-, 14-, 15-, 16-, 17-, and 18-year-old boys after chemotherapy for osteosarcoma were 1.394, 1.306, 1.231, 1.170, 1.119, 1.071, 1.032, 1.010, 1.004, 1.001, and 1.000, respectively; while for girls at the same ages, the multipliers were 1.311, 1.221, 1.146, 1.092, 1.049, 1.021, 1.006, 1.001, 1.000, 1.000, and 1.000, respectively. Prematurity and postmaturity femoral and tibial lengths of 21 patients were used to assess the prediction accuracy. The mean prediction error was 0 cm, 0.8 cm, and 1.6 cm fbr the multiplier method using our coefficients, Paley＇s coefficients, and Anderson＇s method, respectively. Conclusions： Our coefficients for the multiplier method are reliable in predicting lower limb length growth of Chinese children with osteosarcoma.展开更多
背景:精确和可靠的下肢全长片在胫骨高位截骨和膝关节置换前准备和置换后评估中都非常重要。目的:通过下肢步进摄影一次性曝光成像方法获取下肢全长片,并对其进行测量分析。方法:对 13 例膝骨性关节炎伴膝内翻患者进行站立位和平卧位的...背景:精确和可靠的下肢全长片在胫骨高位截骨和膝关节置换前准备和置换后评估中都非常重要。目的:通过下肢步进摄影一次性曝光成像方法获取下肢全长片,并对其进行测量分析。方法:对 13 例膝骨性关节炎伴膝内翻患者进行站立位和平卧位的下肢步进摄影获取下肢全长片,由骨科医师在 X 射线底片上用量角器测量下肢力线角,由放射科医师在计算机屏幕上进行下肢力线角的测量。对所得数据进行差异对比和相关系数研究。结果与结论:应用下肢步进摄影法一次曝光所得的 X 射线下肢全长片具有较高的精确性和可靠性,手工测量和计算机辅助测量有很好的相关性 (r=0.638-0.975)。说明下肢步进摄影获取下肢全长片是一种快捷,简便而有效的检查方法。展开更多
文摘Introduction: Inequality in the length of the lower limbs has an impact on the stability and function of the musculoskeletal system because of the imbalance it causes in our bodies. Several treatment modalities were used by practitioners. The aim of this study was to evaluate the anatomical and functional results of length equalisation of the lower limbs using internal osteosynthesis in the Orthopaedic and Traumatological Surgery Department of the Amirou Boubacar Diallo National Hospital in Niamey. Patients and method: This was a retrospective, prospective study of 22 patients from January 2010 to November 2015, a period of 5 years. The patients concerned were aged at least 18 years and had undergone a femoral shortening osteotomy not exceeding 5 cm on the contralateral healthy limb with a screw plate as the internal osteosynthesis device. Results: The average age of our patients was 24.18 years (18 to 48 years). The etiologies of these length inequalities were: vascular 54.55% (n = 12), post-traumatic 27.27% (n = 6), post-infectious 13.64% (n = 3) and neuromuscular 4.54% (n = 1). The mean length inequality of our patients was 4.93 cm, with extremes ranging from 4 to 8 cm. At an average follow-up of 6.5 months (6 to 24 months), our functional results were satisfactory overall. Discussion: Despite the significant nature of our initial inequalities, which were moderate and severe, we ended up with slight inequalities or even total correction for some of our patients. Conclusion: Inequality in the length of the lower limbs is a handicap that requires appropriate management.
文摘Background： For a child with osteosarcoma, prediction of the limb length discrepancy at maturity is important when planning for limb salvage surgery. The purpose of this study was to provide a reliable prediction method. Methods： A retrospective review of Chinese children receiving chemotherapy for osteosarcoma before skeletal maturity was conducted. Standing full-length radiographs of the lower extremity were used for length measurements. Length-for-age curves were constructed using the LMS method. The lower limb multiplier for a specific age and gender was calculated using the formula M =Lm/L, where M was the gender- and age-specific multiplier, Lm was the bone length at maturity, and L was the age-specific bone length. Prematurity and postmaturity radiographs were used to assess the accuracy of the prediction methods. Results： A total of 513 radiographs of 131 boys and 314 radiographs of 86 girls were used to calculate the coefficients of the multiplier. The multipliers of 8-, 9-, 10-, 11-, 12-, 13-, 14-, 15-, 16-, 17-, and 18-year-old boys after chemotherapy for osteosarcoma were 1.394, 1.306, 1.231, 1.170, 1.119, 1.071, 1.032, 1.010, 1.004, 1.001, and 1.000, respectively; while for girls at the same ages, the multipliers were 1.311, 1.221, 1.146, 1.092, 1.049, 1.021, 1.006, 1.001, 1.000, 1.000, and 1.000, respectively. Prematurity and postmaturity femoral and tibial lengths of 21 patients were used to assess the prediction accuracy. The mean prediction error was 0 cm, 0.8 cm, and 1.6 cm fbr the multiplier method using our coefficients, Paley＇s coefficients, and Anderson＇s method, respectively. Conclusions： Our coefficients for the multiplier method are reliable in predicting lower limb length growth of Chinese children with osteosarcoma.
文摘目的探讨可变剂量(Variable Dose,VD)技术在下肢全长摄影中的应用价值。方法筛选2021年1—4月间行双下肢全长摄影检查患者80例为研究对象。根据剂量模式将受检者分为研究组A和对照组B,各40人,A组、B组分别采用VD模式和不变剂量模式进行全景摄影。A组随机对20例采用普通狭缝拼接摄影(A1);余采用高清狭缝拼接摄影(A2);B组随机对20例分别采用普通狭缝拼接摄影(B1);余采用高清狭缝拼接摄影(B2)。采用3分法评价图像质量,记录总剂量面积乘积(Dose Area Product,DAP)和总空气比释动能(Air Kerma,AK),每组数据取均值进行对比。分别对每两组患者的图像质量和辐射剂量进行比较。结果A1、B1两组总DAP值比较,差异有统计学意义(P<0.05),A1、B1两组总AK值比较,差异有统计学意义(P<0.05);A2、B2两组总DAP值比较,差异有统计学意义(P<0.05);A2、B2两组总AK值比较,差异有统计学意义(P<0.05)。A1、B1两组与A2、B2两图像质量评分比较,差异均无统计学意义(P>0.05)。结论VD狭缝拼接摄影技术在图像质量无明显差异的情况下,可显著降低患者辐射剂量,具有临床应用及推广价值。
文摘背景:精确和可靠的下肢全长片在胫骨高位截骨和膝关节置换前准备和置换后评估中都非常重要。目的:通过下肢步进摄影一次性曝光成像方法获取下肢全长片,并对其进行测量分析。方法:对 13 例膝骨性关节炎伴膝内翻患者进行站立位和平卧位的下肢步进摄影获取下肢全长片,由骨科医师在 X 射线底片上用量角器测量下肢力线角,由放射科医师在计算机屏幕上进行下肢力线角的测量。对所得数据进行差异对比和相关系数研究。结果与结论:应用下肢步进摄影法一次曝光所得的 X 射线下肢全长片具有较高的精确性和可靠性,手工测量和计算机辅助测量有很好的相关性 (r=0.638-0.975)。说明下肢步进摄影获取下肢全长片是一种快捷,简便而有效的检查方法。
