• 제목/요약/키워드: Open wedge high tibial osteotomy

검색결과 7건 처리시간 0.019초

근위경골절골술에서 해부학적 축과 역학적 축의 변화가 경골후방경사각에 미치는 영향 (The Effect of Anatomical Axis and Mechanical Axis on Change of Posterior Tibial Slope Angle in PTO(Proximal Tibial Osteotomy))

  • 신은지;김철웅;이호상;배지훈;왕준호;;오동준
    • 대한기계학회:학술대회논문집
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    • 대한기계학회 2008년도 추계학술대회A
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    • pp.1543-1546
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    • 2008
  • The purpose of this study was to investigate factors affecting the change of tibial posterior slope and introduce a mathematical model which calculate, through 3-dimensional analysis of the proximal tibia, how the angle of the opening wedge along the anteromedial tibial cortex influences the tibial posterior slope and valgus correction when performing a medial open wedge osteotomy. This mathematical model with navigation system can be guidelines which provide surgeons on preoperative and intraoperative measurements to maintain or correct the tibial slope and to obtain the desired valgus correction of the lower limb during an opening wedge osteotomy.

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Pseudoaneurysm Formation due to Popliteal Artery Injury Caused by Drilling during Medial Opening Wedge High Tibial Osteotomy

  • Chun, Keun Churl;So, Byung Jun;Kang, Hyun Tak;Chun, Churl-Hong
    • Knee surgery & related research
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    • 제30권4호
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    • pp.364-368
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    • 2018
  • We report a case of 53-year-old woman with an injured popliteal artery due to excessive drilling with a drill bit during medial opening wedge high tibial osteotomy (MOWHTO). Pseudoaneurysm was diagnosed three days after surgery and confirmed by urgent computed tomography (CT) angiography. Open vascular surgery with resection of the perivascular hematoma and end-to-end anastomosis using ipsilateral saphenous vein interposition graft was performed. CT angiography at 8 months postoperatively showed that blood flow was maintained without obstruction of the graft site and active dorsiflexion of the foot was possible. To reduce neurovascular injury during MOWHTO, it is important not to drill the far cortex at the proximal part of the osteotomy site when using a drill bit, and the metal should be positioned posteromedially as much as possible.

The Learning Curve for Biplane Medial Open Wedge High Tibial Osteotomy in 100 Consecutive Cases Assessed Using the Cumulative Summation Method

  • Lee, Do Kyung;Kim, Kwang Kyoun;Ham, Chang Uk;Yun, Seok Tae;Kim, Byung Kag;Oh, Kwang Jun
    • Knee surgery & related research
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    • 제30권4호
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    • pp.303-310
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    • 2018
  • Purpose: The purpose of this study was to investigate whether surgical experience could improve surgical competency in medial open wedge high tibial osteotomy (MOWHTO). Materials and Methods: One hundred consecutive cases of MOWHTO were performed with preoperative planning using the Miniaci method. Surgical errors were defined as under- or overcorrection, excessive posterior slope change, or the presence of a lateral hinge fracture. Each of these treatment failures was separately evaluated using the cumulative summation test for learning curve (LC-CUSUM). Results: The LC-CUSUM showed competency in prevention of undercorrection, excessive posterior slope change, and lateral hinge fracture after 27, 47, and 42 procedures, respectively. However, the LC-CUSUM did not signal achievement of competency in prevention of overcorrection after 100 procedures. Furthermore, the failure rate for overcorrection showed an increasing tendency as surgical experience increased. Conclusions: Surgical experience may improve the surgeon's competency in prevention of undercorrection, excessive posterior slope change, and lateral hinge fracture. However, it may not help reduce the incidence of overcorrection even after performance of 100 cases of MOWHTO over a period of 6 years.

Does Coronal Knee and Ankle Alignment Affect Recurrence of the Varus Deformity after High Tibial Osteotomy?

  • Lee, O-Sung;Lee, Seung Hoon;Lee, Yong Seuk
    • Knee surgery & related research
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    • 제30권4호
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    • pp.311-318
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    • 2018
  • Purpose: The purpose of this study was to evaluate changes in the coronal alignment of the knee and ankle joints after open wedge high tibial osteotomy (OWHTO) to determine factors related to the recurrence (R) of the varus deformity by serial analysis. Materials and Methods: Sixty-four OWHTOs were enrolled in this study. The weight bearing line (WBL) ratio, joint line convergence angle (JLCA), knee joint inclination, mechanical axis-tibial plateau angle, talar inclination (TI), and distal tibia articular angle (DTAA) were serially assessed. Serial correlation analysis between all parameters was performed. Patients were divided into R group and no recurrence (NR) group according to the WBL ratio (55%) at postoperative one year. Results: The preoperative WBL ratio showed significantly negative correlation with serial changes of JLCA, TI, and DTAA (p<0.05). The JLCA, TI, and DTAA as well as WBL ratio showed a significantly larger degree of varus alignment in the R group than in NR group at postoperative 6 weeks and 1 year after OWHTO (p<0.05). Conclusions: Sufficient correction of the WBL and restoration of the JLCA during OWHTO are essential to prevention of the R of varus deformity after the surgery because they are the only modifiable factors during surgery. Level of Evidence: IV, Case series.

내반 변형을 지닌 내측 반월상 연골판 후방 골 기시부 퇴행성 파열 환자에서 반월상 연골판 절제술 단독과 근위 경골 절골술 동반 수술의 결과 비교 (The comparative study of arthroscopic meniscectomy with or without high tibial osteotomy in patients with degenerative medial meniscus posterior horn tear)

  • 문재영;선종근;송은규;김형순;임지현;조현종
    • 대한정형외과스포츠의학회지
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    • 제11권1호
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    • pp.30-36
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    • 2012
  • 목적: 내반 변형을 지닌 내측 반월 연골판 후방 골 기시부 퇴행성 파열 환자에 대해 관절경적 반월 연골판 절제술을 시행 중 개방형 경골 근위부 절골술을 시행하는 경우와 하지 않는 경우에서의 임상적 및 방사선학 결과를 비교 하고자 하였다. 대상 및 방법: $3^{\circ}$ 이상 내반 변형과 내측 반월 연골판 후방 골 기시부 퇴행성 파열을 지닌 환자에 대해 관절경적 반월 연골판 절제술을 시행받고, 최소 3년 이상 추시가 가능한 환자 42명을 대상으로 하였다. 그 중 30명에 대해서는 개방형 근위 경골 절골술을 함께 시행하였으며, 나머지 12명에 대해서는 반월 연골판 절제술만 시행하였었다. 평균 추시 시간은 52.5개월 (36.0~76.6)이었다. 최종 추시 상 두 군간에 수술 전 증상의 소실 유무, 수술에 대한 환자의 만족도, 및 HSS 점수에 대한 임상적 결과를 비교하였다. 또한 최종 추시 상 방사선학적 퇴행성 관절염의 진행 유무를 비교하였다. 결과: 증상의 호전은 근위 경골 절골술을 함께 시행한 군(83.3%, 25예)에서 의의있게 관절경적 반월 연골판 부분 절제술만을 시행한 군(66.7%, 8예)보다 호전을 보였다. 환자 만족도 역시 근위 경골 절골술을 함께 시행한 군(83.3%, 25예)에서 반월상부분 절제술만 시행한 군(58.3%, 7예)보다 의의있게 높게 나타났다. HSS 점수는 근위 경골 절골술을 같이 시행한 군은 술 전 56.9점에서 술 후 90.8점으로 향상되었으며, 반월 연골판 부분 절제술만을 시행한 군에서는 술 전 67.9점에서 술 후 89.0점으로 향상되었으나, 양군간의 통계학적 차이는 관찰할 수 없었다. WOMAC 점수 역시 양군간의 통계학적 차이는 관찰할 수 없었다. 최종 추시 상 방사선학적 퇴행성 관절염의 진행에 있어서 두 군간에 의의 있는 차이는 없었다. 결론: 내반 변형을 지닌 반월 연골판 후방 골 기시부 퇴행성 파열 환자의 치료에 있어 좋은 임상적 결과를 위해서는 근위 경골절골술이 반드시 필요할 것으로 생각된다. 그러나 퇴행성 관절염의 결과에 미치는 영향에 대해서는 장기적인 추시가 필요할 것으로 생각된다.

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