Abstracts Posters SICOT-SOF meeting Gothenburg 2010 _2_
Abstracts Posters SICOT-SOF meeting Gothenburg 2010 _2_ Abstracts Posters SICOT-SOF meeting Gothenburg 2010 _2_
Poster Topic: Arthroplasty - Hip Abstract number: 25257 PERIACETABULAR OSTEOTOMY FOR THE TREATMENT OF COXARTHROSIS WITH HUGE CYSTS -PROSPECTIVE CONSECUTIVE SERIES WITH A 7-YEAR MINIMUM FOLLOW-UP PERIOD- Etsuo CHOSA, Takero SAKAMOTO, Shinji WATANABE, Tomohisa SEKIMOTO, Hiroaki HAMADA, Shotaro NOZAKI, Hiroshi IKEJIRI, Yoshihiro NAKAMUA, Hajime FUKUDA Orthopaedic Surgery, Faculty of Medicine, University of Miyazaki, Miyazaki (JAPAN) Background: Satisfactory intermediate and long-term results of periacetabular osteotomy for the treatment of advanced coxarthrosis have been reported. The purpose of this study was to examine the results of periacetabular osteotomy in patients with advanced coxarthrosis with huge cysts secondary to developmental dysplasia of the hip.Methods: We prospectively analyzed nine hips in nine patients with bone cysts more than 1.5 cm width who underwent a Bernese periacetabular osteotomy with bone grafts by a single surgeon. The average age of the patients at the time of surgery was 45.9 years, and the average duration of clinical follow-up was 10 years. The Japanese Orthopaedic Association (JOA) hip score and overall patient satisfaction with surgery were used to assess hip function and clinical results. Plain radiographs were used to assess the correction of the deformity and progression of degenerative arthritis.Results: The mean pain score and the mean JOA hip scores improved postoperatively. Radiographic analysis demonstrated consistent deformity correction and significant improvements in the AHI and anterior acetabular head index with no recurrence of the cystic lesion. Decreased range of motion and progression of degenerative arthritis were found in some cases with relative joint space narrowing and huge cyst.Conclusions: Periacetabular osteotomy for the coxarthrosis with huge cysts improves function and may prevent delay progression of degenerative arthritis in most patients when the indication and surgical technique are appropriate. 64
Poster Topic: Arthroplasty - Hip Abstract number: 25269 THREE-DIMENSIONAL MOTION ANALYSIS OF FUNCTIONAL GAIT COMPENSATION IN PATIENTS WITH UNILATERAL HIP OSTEOARTHRITIS. Riki TANAKA 1 , Masamori SHIGEMATSU 2 , Tsutomu MOTOOKA 1 , Takayuki AKIYAMA 1 , masaaki MAWATARI 1 , takao HOTOKEBUCHI 3 1 Department of Orthopaedic Surgery, Faculty of Saga University, Saga (JAPAN), 2 Department of Orthopaedic Surgery, Saga Social Insurance Hospital, Saga (JAPAN), 3 Saga University, Saga (JAPAN) Many patients with osteoarthritis (OA) of the hip joint suffer from pain and functional impairment of the hip over a long period of time. We aimed to investigate the compensatory function in the patients with hip OA. To this end, we performed gait analysis of 50 female patients with unilateral hip OA and on a control group of 20 healthy elderly women using a three-dimensional motion analysis system (Vicon). There were significant differences in spatiotemporal gait parameters and joint motions compared with healthy controls. The following spatiotemporal gait parameters were decreased: velocity, cadence, stride length, step length on both sides, and single support duration of the involved side. The following joint motions were decreased: hip flexion-extension range of the involved side, hip abductionadduction range on both sides, knee flexion-extension range on both sides, knee rotation range of involved side, and ankle dorsiflexion-plantarflexion range of involved side. The most evident differences between the hip OA patients and the controls were increased motion of the knee varus-valgus range of uninvolved sides and pelvic tilt. The increased pelvic tilt directly correlated with the range of hip flexion (P< 0.001). Knee and low back pain would be caused by increasing these motions. We conclude that the increased motion of the knee varus-valugus range and pelvic tilt were compensatory functions. The study deepened our understanding the process to causing disorder of adjacent joints in hip OA patients. 65
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Poster<br />
Topic: Arthroplasty - Hip<br />
Abstract number: 25269<br />
THREE-DIMENSIONAL MOTION ANALYSIS OF FUNCTIONAL GAIT<br />
COMPENSATION IN PATIENTS WITH UNILATERAL HIP OSTEOARTHRITIS.<br />
Riki TANAKA 1 , Masamori SHIGEMATSU 2 , Tsutomu MOTOOKA 1 , Takayuki<br />
AKIYAMA 1 , masaaki MAWATARI 1 , takao HOTOKEBUCHI 3<br />
1 Department of Orthopaedic Surgery, Faculty of Saga University, Saga (JAPAN),<br />
2 Department of Orthopaedic Surgery, Saga Social Insurance Hospital, Saga<br />
(JAPAN), 3 Saga University, Saga (JAPAN)<br />
Many patients with osteoarthritis (OA) of the hip joint suffer from pain and functional<br />
impairment of the hip over a long period of time. We aimed to investigate the<br />
compensatory function in the patients with hip OA. To this end, we performed gait<br />
analysis of 50 female patients with unilateral hip OA and on a control group of 20<br />
healthy elderly women using a three-dimensional motion analysis system (Vicon).<br />
There were significant differences in spatiotemporal gait parameters and joint<br />
motions compared with healthy controls. The following spatiotemporal gait<br />
parameters were decreased: velocity, cadence, stride length, step length on both<br />
sides, and single support duration of the involved side. The following joint motions<br />
were decreased: hip flexion-extension range of the involved side, hip abductionadduction<br />
range on both sides, knee flexion-extension range on both sides, knee<br />
rotation range of involved side, and ankle dorsiflexion-plantarflexion range of involved<br />
side. The most evident differences between the hip OA patients and the controls<br />
were increased motion of the knee varus-valgus range of uninvolved sides and pelvic<br />
tilt. The increased pelvic tilt directly correlated with the range of hip flexion (P<<br />
0.001). Knee and low back pain would be caused by increasing these motions. We<br />
conclude that the increased motion of the knee varus-valugus range and pelvic tilt<br />
were compensatory functions. The study deepened our understanding the process<br />
to causing disorder of adjacent joints in hip OA patients.<br />
65
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