The Experts below are selected from a list of 297 Experts worldwide ranked by ideXlab platform

Shilu Chia - One of the best experts on this subject based on the ideXlab platform.

  • Genu recurvatum versus fixed flexion after total knee arthroplasty
    Clinics in Orthopedic Surgery, 2016
    Co-Authors: Amila Silva, Hwei Chi Chong, Pak Lin Chin, Shilu Chia, Ngai Ngung Lo
    Abstract:

    Background: To date, there is no study comparing outcomes between post-total knee replacement Genu recurvatum and fixed flexion. This study aims to provide data that will help in deciding which side to err on when neutral extension is not achieved. Methods: A prospective cohort study of primary total knee arthroplasties was performed, which compared the 6-month and 2-year clinical outcomes between fixed flexion and Genu recurvatum deformities at 6 months. Results: At 6 months, knees in Genu recurvatum did better than knees in fixed flexion deformity in terms of knee flexion. However, at 2 years, knees in fixed flexion deformity did better in terms of knee scores and showed better improvement in the degree of deformity. Conclusions: We conclude that it is better to err on the side of fixed flexion deformity if neutral alignment cannot be achieved.

  • early outcomes of unicompartmental knee arthroplasty in patients with preoperative Genu recurvatum of non neurological origin
    Journal of Arthroplasty, 2016
    Co-Authors: Lei Jiang, Hwei Chi Chong, Shilu Chia, Jerry Yongqiang Chen, Ngainung Lo
    Abstract:

    Abstract Background This study aims to evaluate outcomes of unicompartmental knee arthroplasty (UKA) in patients with preoperative Genu recurvatum. Methods From patients who underwent UKA at a tertiary hospital between 2005 and 2012, the study selected 30 patients with Genu recurvatum (group A) compared with a matching cohort of 60 without Genu recurvatum (group B). Group A was also compared with a matched cohort of 60 patients with Genu recurvatum who underwent total knee arthroplasty (group C). Functional outcomes data were prospectively collected at 6-month and 2-year follow-up. Results Two years after UKA, group A had poorer Oxford Knee Score of 22 ± 8 compared with group B at 16 ± 3 ( P P P  = .014). After 2 years, group C had superior Oxford Knee Score (16 ± 2, P P  = .003), and 36 Item Short Form Health Survey Physical Component Score (53 ± 6, P  = .005). The hyperextension angle in group A decreased from 6° ± 2° to 2° ± 4° after 2 years with an improvement of 4° ± 4° ( P P P  = .002) in hyperextension angle correction between group A and C. Conclusion Preoperative recurvatum is a predictor of poorer outcome after UKA, and this patient population benefits from better 2-year functional outcomes after total knee arthroplasty.

Hwei Chi Chong - One of the best experts on this subject based on the ideXlab platform.

  • Genu recurvatum versus fixed flexion after total knee arthroplasty
    Clinics in Orthopedic Surgery, 2016
    Co-Authors: Amila Silva, Hwei Chi Chong, Pak Lin Chin, Shilu Chia, Ngai Ngung Lo
    Abstract:

    Background: To date, there is no study comparing outcomes between post-total knee replacement Genu recurvatum and fixed flexion. This study aims to provide data that will help in deciding which side to err on when neutral extension is not achieved. Methods: A prospective cohort study of primary total knee arthroplasties was performed, which compared the 6-month and 2-year clinical outcomes between fixed flexion and Genu recurvatum deformities at 6 months. Results: At 6 months, knees in Genu recurvatum did better than knees in fixed flexion deformity in terms of knee flexion. However, at 2 years, knees in fixed flexion deformity did better in terms of knee scores and showed better improvement in the degree of deformity. Conclusions: We conclude that it is better to err on the side of fixed flexion deformity if neutral alignment cannot be achieved.

  • early outcomes of unicompartmental knee arthroplasty in patients with preoperative Genu recurvatum of non neurological origin
    Journal of Arthroplasty, 2016
    Co-Authors: Lei Jiang, Hwei Chi Chong, Shilu Chia, Jerry Yongqiang Chen, Ngainung Lo
    Abstract:

    Abstract Background This study aims to evaluate outcomes of unicompartmental knee arthroplasty (UKA) in patients with preoperative Genu recurvatum. Methods From patients who underwent UKA at a tertiary hospital between 2005 and 2012, the study selected 30 patients with Genu recurvatum (group A) compared with a matching cohort of 60 without Genu recurvatum (group B). Group A was also compared with a matched cohort of 60 patients with Genu recurvatum who underwent total knee arthroplasty (group C). Functional outcomes data were prospectively collected at 6-month and 2-year follow-up. Results Two years after UKA, group A had poorer Oxford Knee Score of 22 ± 8 compared with group B at 16 ± 3 ( P P P  = .014). After 2 years, group C had superior Oxford Knee Score (16 ± 2, P P  = .003), and 36 Item Short Form Health Survey Physical Component Score (53 ± 6, P  = .005). The hyperextension angle in group A decreased from 6° ± 2° to 2° ± 4° after 2 years with an improvement of 4° ± 4° ( P P P  = .002) in hyperextension angle correction between group A and C. Conclusion Preoperative recurvatum is a predictor of poorer outcome after UKA, and this patient population benefits from better 2-year functional outcomes after total knee arthroplasty.

Shusaku Matsuda - One of the best experts on this subject based on the ideXlab platform.

  • total knee arthroplasty in patients with Genu recurvatum
    Journal of Bone and Joint Surgery-british Volume, 2016
    Co-Authors: Shusaku Matsuda
    Abstract:

    Introduction Genu recurvatum deformities are unusual before total knee arthroplasty (TKA), occurring in less than 1% of patients. The purpose of this study is to evaluate the clinical and radiographic results of primary TKA in patients that had recurvatum deformities before surgery. Patients and Methods The inclusion criteria was to have recurvatum deformity over 10 degrees on lateral standing X-ray view. We retrospectively reviewed 22 knees with pre-operative recurvatum deformities, and the incident was 1.0% of all TKAs at our hospital. The etiology of the arthritis was osteoarthritis in 21 knees, of which 3 knees were neuropathic disease, and rheumatoid arthritis in 1 knee. There were 6 men and 16 women, and the average age was 73.3 years (range, 53 to 83 years) at the time of operation. The average follow-up period was 15 months (range, 3 to 81 months). We performed to use medial parapatellar approach and bone cutting was done by measured resection technique. The surgical knacks were resection of less distal femur and proximal tibia bone to make extension gap tightly, additionally decrease the tibial posterior slope. Posterior-stabilizer (PS) implants (NexGen LPS: Zimmer, Bisurface KU4+: JMM) were used in 20 knees and constrained implants (NexGen RH knee: Zimmer, Endo-Model Hinge Knee: Link) were in 2 knees with neuropathic joints. Results The averaged Knee Society Knee and Function score improved from 33.1 points to 94.1 points, and 28.0 points to 60.5 points at the time of the last follow-up. The femorotibial angle changed from averaged 183.4 degrees (range, 162 to 195 degrees) preoperatively to averaged 173.3 degrees (range, 170 to 177 degrees). Preoperative hyperextension was averaged 18.2 degrees (range, 10 to 40 degrees). Intraoperatively, the hyperextension deformity was corrected in all cases. The tibial posterior slope was averaged 1.7 degrees (range, −2.7 to 6 degrees). The final hyperextension improved averaged 6.9 degrees (range, −1.7 to 26.6 degrees), all but one knee were corrected. One case treated with a standard PS type, who was associated with neuropathic disease, had a recurrence of recurvatum deformity and required revision surgery. Discussion recurvatum may be associated with a severe osseous deformity, capsular or ligamentous laxity, and neuromuscular disease. Surgical solutions may be to use a standard PS prosthesis with a slight underresection of the bone edge, and decrease tibial posterior slope. An alternative solution is to use a rotating-hinge prosthesis with less than antigravity quadriceps strength for neuromuscular disease.

Ngainung Lo - One of the best experts on this subject based on the ideXlab platform.

  • early outcomes of unicompartmental knee arthroplasty in patients with preoperative Genu recurvatum of non neurological origin
    Journal of Arthroplasty, 2016
    Co-Authors: Lei Jiang, Hwei Chi Chong, Shilu Chia, Jerry Yongqiang Chen, Ngainung Lo
    Abstract:

    Abstract Background This study aims to evaluate outcomes of unicompartmental knee arthroplasty (UKA) in patients with preoperative Genu recurvatum. Methods From patients who underwent UKA at a tertiary hospital between 2005 and 2012, the study selected 30 patients with Genu recurvatum (group A) compared with a matching cohort of 60 without Genu recurvatum (group B). Group A was also compared with a matched cohort of 60 patients with Genu recurvatum who underwent total knee arthroplasty (group C). Functional outcomes data were prospectively collected at 6-month and 2-year follow-up. Results Two years after UKA, group A had poorer Oxford Knee Score of 22 ± 8 compared with group B at 16 ± 3 ( P P P  = .014). After 2 years, group C had superior Oxford Knee Score (16 ± 2, P P  = .003), and 36 Item Short Form Health Survey Physical Component Score (53 ± 6, P  = .005). The hyperextension angle in group A decreased from 6° ± 2° to 2° ± 4° after 2 years with an improvement of 4° ± 4° ( P P P  = .002) in hyperextension angle correction between group A and C. Conclusion Preoperative recurvatum is a predictor of poorer outcome after UKA, and this patient population benefits from better 2-year functional outcomes after total knee arthroplasty.

Krit Boontanapibul - One of the best experts on this subject based on the ideXlab platform.