Publications by authors named "Naosuke Nagata"
Article Synopsis
- Distal femoral osteotomy (DFO) is a complex surgery for correcting deformities in the distal femur of patients with osteoarthritis, often performed alongside high tibial osteotomy (HTO).
- The study analyzed CT images of patients to understand the shapes and angles of the distal femur's cortices in different knee deformities (valgus and varus).
- Findings revealed significant differences in the medial and lateral cortical angles and heights, emphasizing that surgeons need to consider these morphological variations when conducting DFO to ensure successful outcomes.
Article Synopsis
- Popliteal artery entrapment syndrome (PAES) is a rare vascular condition seen in young athletes, often presenting as leg pain during activities like boxing and is frequently missed by orthopedic doctors.
- A young professional boxer experienced intermittent claudication during matches due to PAES and underwent surgical reconstruction of the medial gastrocnemius muscle to restore strength.
- This case emphasizes the importance of early diagnosis and appropriate treatment of PAES to ensure athletes can return to competitive sports successfully.
Introduction: This retrospective study aims to clarify if there are benefits of performing unicompartmental knee arthroplasty (UKA) on just one indicated side in patients who undergo simultaneous bilateral knee arthroplasty.
Materials And Methods: We compared 33 cases of simultaneous bilateral UKA/total knee arthroplasty (TKA) (S-UT) with 99 cases of simultaneous bilateral TKA (S-TT). Comparison included blood tests [C-reactive protein (CRP), albumin, and D-dimer], the incidence of deep vein thrombosis (DVT), range of motion (ROM), and clinical scores before and 1 year after surgery.
Background: The aim of this retrospective study was to clarify if unicompartmental knee arthroplasty (UKA) can acquire a greater postoperative flexion angle than total knee arthroplasty (TKA) in the same individuals after adjusting for the preoperative flexion angle and if the preoperative flexion angle correlates with the change in flexion postoperatively.
Methods: Thirty-five patients between 2011 and 2017 who had undergone simultaneous TKA on one knee and UKA on the other knee were included in the study. Range of motion was measured preoperatively and at one year after the surgery.
Purpose: Although the tibial rotation axis is significant in knee arthroplasty, no reliable extraarticular landmark has been proposed. We hypothesized that the tibial lateral axis (TLA), a tangential line of the lateral tibial surface, is perpendicular to the surgical epicondylar axis (SEA) and compared it to other existing landmarks by 3D-CT.
Methods: Fifty legs in 25 consecutive patients were studied.
The under-vastus approach (UVA) is a modification of the conventional subvastus approach for knee arthroplasty. Our modified UVA allows the muscles to be spared while offering good exposure of the operative field and facilitating anatomical repair of the capsule and fascia. A medial parapatellar incision is made and the vastus medialis fascia is incised along the same line.
View Article and Find Full Text PDFA subcutaneous arthroscopic portal closure technique without thread exposure.
Eur J Orthop Surg Traumatol
February 2020
We present a simple new suture technique for an arthroscopic portal that enables a secured subcutaneous suture without thread exposure. A curved suture needle is inserted through the skin at approximately 1 cm from the wound edge. The needle penetrates the subcutaneous tissue and exits through the skin on the opposite side of the wound edge.
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