Triple pelvic osteotomy as treatment for osteoarthritis secondary to developmental dysplasia of the hip

Joint-preserving osteotomies are an established treatment for adult hip pain secondary to developmental dysplasia of the hip. However, their value for advanced osteoarthritis is unclear. Therefore this study addresses the question of long-term results of triple pelvic osteotomy in patients with second grade osteoarthritis. Thirty-two patients with second grade osteoarthritis secondary to developmental dysplasia of the hip before triple pelvic osteotomy were clinically and radiographically assessed 11.5years postoperatively. Five patients required conversion to total hip replacement. Kaplan-Meier survivorship analysis predicted a survival rate of 85.3%. The mean Harris hip score increased significantly with more than 56% good or very good results. A preoperative BMI > 25 and Harris hip score < 70 resulted in worse outcome or early conversion into total hip arthroplasty. The results indicate that developmental dysplasia of the hip even in second grade osteoarthritis can be treated with triple pelvic osteotom

Mean 20-year Followup of Bernese Periacetabular Osteotomy

The goal of the Bernese periacetabular osteotomy is to correct the deficient acetabular coverage in hips with developmental dysplasia to prevent secondary osteoarthrosis. We determined the 20-year survivorship of symptomatic patients treated with this procedure, determined the clinical and radiographic outcomes of the surviving hips, and identified factors predicting poor outcome. We retrospectively evaluated the first 63 patients (75 hips) who underwent periacetabular osteotomy at the institution where this technique was developed. The mean age of the patients at surgery was 29years (range, 13-56years), and preoperatively 24% presented with advanced grades of osteoarthritis. Four patients (five hips) were lost to followup and one patient (two hips) died. The remaining 58 patients (68 hips) were followed for a minimum of 19years (mean, 20.4years; range, 19-23years) and 41 hips (60%) were preserved at last followup. The overall mean Merle d'Aubigné and Postel score decreased in comparison to the 10-year value and was similar to the preoperative score. We observed no major changes in any of the radiographic parameters during the 20-year postoperative period except the osteoarthritis score. We identified six factors predicting poor outcome: age at surgery, preoperative Merle d'Aubigné and Postel score, positive anterior impingement test, limp, osteoarthrosis grade, and the postoperative extrusion index. Periacetabular osteotomy is an effective technique for treating symptomatic developmental dysplasia of the hip and can maintain the natural hip at least 19years in selected patients. Level of Evidence: Level III, prognostic study. See the Guidelines for Authors for a complete description of levels of evidenc

Реконструкция тазобедренного сустава у молодых пациентов с диспластическим коксартрозом

Background. The value of joint-sparing reconstructive procedures in patients with osteoarthritis in a dysplastic hip is controversial. The study aimed to evaluate the immediate and mid-term results of reconstructive interventions performed in patients with this pathology. Methods. The treatment results of 30 patients aged 1440 years with osteoarthritis in the dysplastic hip were analyzed. The mean follow-up time was 6.81.5 years in group 1 and 4.10.7 years in group 2. The clinical condition and treatment results were assessed by DAubigne-Postel, Severin, Tonnis criteria, and the Ilizarov Center system. In all cases, extra-articular reconstructive procedures were performed on both articular components. Results. The patients were divided into two groups by age. In group 1 (1418 years), the functional result was 16.00.5 points. According to the Severin criteria, the joints were distributed as follows: Ia, 7; IIa, 7; IIb, 2; and III, 3. The degree of hip osteoarthritis did not change in 13 joints. Osteoarthritis progressed in one joint, and arthritic changes regressed in four joints. The treatment results according to the criteria of the RSC VTO were good in 14 joints, satisfactory in 5, and unsatisfactory in 1. In group 2 (18 years, n = 11), the functional result was 15.00.4 points. The distribution of joints according to the Severin criteria was as follows: Ia, 3; IIa, 6, and III, 2. The degree of osteoarthritis did not change in 10 joints. Osteoarthritis progressed in one joint. The treatment results according to the criteria of the Ilizarov Center were good in seven joints, satisfactory in three, and unsatisfactory in one. Conclusions. The differentiated use of joint-sparing reconstructive procedures makes it possible to slow down the progression of the pathological process in the joint even in patients with developed osteoarthritis and, in some cases, to use them as a temporary alternative to endoprosthesis in adolescents and young adults.Актуальность. Значение суставосберегающих реконструктивных вмешательств у пациентов с развившимся диспластическим коксартрозом остается дискутабельным. Цель исследования оценка ближайших и среднесрочных результатов реконструктивных вмешательств, выполненных у пациентов с диспластическим коксартрозом. Материал и методы. Проанализированы результаты лечения 30 пациентов с диспластическим коксартрозом в возрасте от 14 до 40 лет. Пациенты были разделены на две группы. В первую группу вошли 19 пациентов в возрасте 1418 лет, во вторую 11 пациентов в возрасте 1940 лет. В первой группе средний срок наблюдения составил 6,81,5 лет, во второй группе 4,10,7 года. Клиническое состояние и результаты лечения оценивали по критериям DAubigne Postel, Severin, Tnnis и по системе оценки, разработанной в НМИЦ ТО им. акад. Г.А. Илизарова. У всех пациентов выполняли внесуставные суставосберегающие реконструктивные вмешательства, показания к которым устанавливали с учетом типа суставных поверхностей и величины индекса конгруэнтности суставных поверхностей. Результаты. В первой группе средний функциональный результат составил 16,00,5 балла. Распределение суставов по классификации Severin: Ia 7, IIa 7, IIb 2, III 3. Степень артроза не изменилась в 13 суставах. Прогрессирование артроза отмечено в одном суставе, регресс артрозных изменений в четырех суставах. Результаты лечения по критериям НМИЦ ТО им. Г.А. Илизарова: хороший 14 суставов, удовлетворительный 4 сустава, неудовлетворительный 1 сустав. Во второй группе функциональный результат составил 15,00,4 балла. Распределение суставов по критериям Severin: Ia 3, IIa 6, III 2. Степень артроза не изменилась в 10 суставах, прогрессирование артроза произошло в одном суставе. Результаты лечения по критериям НМИЦ ТО им. Г.А. Илизарова: хороший 7 суставов, удовлетворительный 3, неудовлетворительный 1. Заключение. Дифференцированное применение суставосберегающих реконструктивных вмешательств дает возможность замедлить прогрессирование патологического процесса в суставе даже в условиях развившегося артроза и позволяет в ряде случаев использовать их в качестве временной альтернативы эндопротезированию у подростков и пациентов молодого возраста

Pelvic Osteotomies for Developmental Dysplasia of the Hip

Treatment of developmental dysplasia of the hip (DDH) is based on concentric reducibility of the femoral head, patient age and the status of triradiate cartilage. Patients in walking age are indicated for pelvic osteotomy to correct the dysplastic acetabulum. Salter innominate osteotomy and Pemberton osteotomy are the most widely used procedures to treat the developmental dysplasia of the hip in early childhood. Although short-term results of the pelvic osteotomies are reported well, some long-term sequalae such as coxa valga caused by Kalamchi type II osteonecrosis of the femoral head, leg length discrepancy and impingement of hip may occur

The Impact of the Laterality on Radiographic Outcomes of the Bernese Periacetabular Osteotomy

The purpose of this study was to compare the pre and postoperative radiographic findings and analyze the complication rate with respect to the laterality in periacetabular osteotomy in right-handed surgeons. Satisfaction rate and radiographic findings were prospectively collected between 2017 and 2019 and retrospectively reviewed. For analysis, all measurements of the CT scans were performed by a musculoskeletal fellowship-trained radiologist. Complications were classified into two categories: perioperative or postoperative. All surgeries were performed by three right-hand dominant hip surgeons. A total of 41 dysplastic hips (25 right and 16 left hips) in 33 patients were included. Postoperatively, a significantly lower acetabular index angle on the left side was observed at -2.6 +/- 4.3 as compared to the right side at 1.6 +/- 6.5 (p < 0.05). The change in Center edge (CE) angle was significantly lower for the left side 13.7 +/- 5.5 degrees than on the right side, measured at 18.4 +/- 7.3 (p < 0.001); however, the overall CE angle was comparable at 38.5 +/- 8.9 degrees without any significant difference between the operated hips (left side at 37.8 +/- 6.1 degrees versus right side at 39.0 +/- 10.3; p = 0.340). No significant differences in other radiographic measurements or surgical time were observed. For complications, the right side was more commonly affected, which may also explain a higher satisfaction rate in patients who were operated on the left hip with 92.3%. The change in lateral CE angle was significantly lower for the left side and the right hip seems to be predisposed to complications, which correlate with a lower satisfaction rate in right-handed surgeons

A Modification of Periacetabular Osteotomy Using a Two-Incision Approach

In residual hip dysplasia periacetabular osteotomy (PAO) can improve insufficient coverage of the femoral head. It requires a broad dissection of the pelvic bones and detachment of muscle insertions, however. We have developed a modification of the Bernese periacetabular osteotomy with reduced soft tissue exposure. It uses two small skin incisions and offers therefore the perspective of nicer scars but also increases the risk of technical complications due to impaired vision. To be able to draft these risks, the clinical and radiographic results of 23 patients with PAO through the modified Smith-Petersen approach of Ganz (group A) and 24 patients with our two-incision modification (group B) have been reviewed retrospectively with an average follow-up of 19 (group A) and 12 (group B) months postoperatively

偏心性寛骨臼回転骨切り術の術前作図方法

博士(医学) 乙第2898号(主論文の要旨、要約、本文),著者名:Morita Yuji・Otsuru Tadahiko・Munakata Yutarou・Kato Yoshiharu・Hasegawa Yukiharu,タイトル:Preoperative Planning for Eccentric Rotational Acetabular Osteotomy,掲載誌:日本関節病学会誌(1883-2873),巻・頁・年:33巻4号p.427-435(2014)博士(医学)東京女子医科大

Three-dimensional kinetic simulation before and after rotational acetabular osteotomy

13301甲第4085号博士（医学）金沢大学博士論文本文Full 以下に掲載：Journal of Orthopaedic Science 19(3) pp.443-450 2014. Springer. 共著者：Shintaro Iwai, Tamon Kabata, Toru Maeda, Yoshitomo Kajino, Shin Watanabe, Kazunari Kuroda, Kenji Fujita, Kazuhiro Hasegawa, Hiroyuki Tsuchiy