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Kyoung Min Lee - One of the best experts on this subject based on the ideXlab platform.

  • aggravation of ankle varus incongruency following total knee replacement correcting 10 of Genu Varum deformity a radiographic assessment
    Journal of Arthroplasty, 2020
    Co-Authors: Chong Bum Chang, Moon Seok Park, Chin Youb Chung, Ji Hye Choi, Jong Seop Kim, Kyoung Min Lee
    Abstract:

    Abstract Background This study aimed to investigate the change in ankle varus incongruencies following total knee replacement (TKR) in patients with preoperative Genu Varum deformity of ≥10°. Methods The study cohort was composed of patients who underwent TKR in a single institution for knee osteoarthritis with preoperative Genu Varum deformity of ≥10° and concomitant varus ankle incongruencies. Eight radiographic measurements were evaluated preoperatively and postoperatively: mechanical tibiofemoral angle, mechanical lateral distal femoral angle, medial proximal tibial angle, lateral distal tibial angle, tibial plafond inclination, talar inclination, tibiotalar tilt angle (TTTA), and tibia-mechanical axis angle. Of these, TTTA represented the quantitative degree of ankle joint incongruency. Results A total of 110 patients (male = 2; female = 108) were included in the analysis. The mean patient age was 68.9 (standard deviation [SD] 7.2) years at the time of TKR. All radiographic measurements showed significant changes postoperatively, representing the appropriate correction of Genu Varum deformity and restoration of the mechanical axis. Nineteen patients (17.3%) showed postoperative decrease in TTTA, 2 (1.8%) remained the same, and 89 (80.9%) showed increase. Overall, mean preoperative and postoperative TTTA were 3.3° (SD 2.2°) and 4.7° (SD 2.9°), respectively (P Conclusion Varus ankle incongruencies showed aggravation following TKR despite correction of Genu Varum deformity and restoration of the mechanical axis. This could be an important cause of postoperative increase or development of ankle pain following TKR. Therefore, patients with preoperative varus ankle incongruencies need to be warned of possible aggravation of ankle symptoms and be evaluated before TKR. Level of Evidence Prognostic level III.

  • Aggravation of Ankle Varus Incongruency Following Total Knee Replacement Correcting ≥10° of Genu Varum Deformity: A Radiographic Assessment.
    The Journal of arthroplasty, 2020
    Co-Authors: Chong Bum Chang, Moon Seok Park, Chin Youb Chung, Ji Hye Choi, Jong Seop Kim, Kyoung Min Lee
    Abstract:

    Abstract Background This study aimed to investigate the change in ankle varus incongruencies following total knee replacement (TKR) in patients with preoperative Genu Varum deformity of ≥10°. Methods The study cohort was composed of patients who underwent TKR in a single institution for knee osteoarthritis with preoperative Genu Varum deformity of ≥10° and concomitant varus ankle incongruencies. Eight radiographic measurements were evaluated preoperatively and postoperatively: mechanical tibiofemoral angle, mechanical lateral distal femoral angle, medial proximal tibial angle, lateral distal tibial angle, tibial plafond inclination, talar inclination, tibiotalar tilt angle (TTTA), and tibia-mechanical axis angle. Of these, TTTA represented the quantitative degree of ankle joint incongruency. Results A total of 110 patients (male = 2; female = 108) were included in the analysis. The mean patient age was 68.9 (standard deviation [SD] 7.2) years at the time of TKR. All radiographic measurements showed significant changes postoperatively, representing the appropriate correction of Genu Varum deformity and restoration of the mechanical axis. Nineteen patients (17.3%) showed postoperative decrease in TTTA, 2 (1.8%) remained the same, and 89 (80.9%) showed increase. Overall, mean preoperative and postoperative TTTA were 3.3° (SD 2.2°) and 4.7° (SD 2.9°), respectively (P Conclusion Varus ankle incongruencies showed aggravation following TKR despite correction of Genu Varum deformity and restoration of the mechanical axis. This could be an important cause of postoperative increase or development of ankle pain following TKR. Therefore, patients with preoperative varus ankle incongruencies need to be warned of possible aggravation of ankle symptoms and be evaluated before TKR. Level of Evidence Prognostic level III.

Sang-gyun Kim - One of the best experts on this subject based on the ideXlab platform.

  • change in the weight bearing line ratio of the ankle joint and ankle joint line orientation after knee arthroplasty and high tibial osteotomy in patients with Genu Varum deformity
    International Orthopaedics, 2021
    Co-Authors: Jae Gyoon Kim, Dong Hun Suh, Gi Won Choi, Bong Mo Koo, Sang-gyun Kim
    Abstract:

    PURPOSE Several studies reported that excessive correction of severe Genu Varum deformity with total knee arthroplasty or high tibial osteotomy (HTO) could result in ankle joint pain and osteoarthritis progression. However, few studies have evaluated the change in the weight-bearing-line (WBL) ratio of the ankle joint after knee arthroplasty or HTO in patients with Genu Varum deformities. This study aimed to investigate the change in the WBL ratio of the ankle joint and ankle joint line orientation after knee arthroplasty or HTO in patients with Genu Varum deformities. METHODS We retrospectively evaluated 40 patients (mean age, 69.9 ± 8.0 years) with Genu Varum deformities of > 5° and underwent knee arthroplasty or HTO. Three radiologic parameters, including (1) the hip-knee-ankle (HKA) angle, (2) WBL ratio of the ankle joint, and (3) ankle joint line orientation relative to the ground (AJLO-G), were assessed using pre-operative and post-operative orthoradiographs. A paired t test was used to evaluate post-operative changes in the three parameters. Correlations between the change in HKA angle and that in the WBL ratio of the ankle joint and AJLO-G were analyzed. RESULTS The mean HKA angle significantly decreased post-operatively (10.6° ± 5.3° to 1.1° ± 3.4°; P < 0.001). The WBL ratio of the ankle joint increased from 35.8% ± 15.2% to 53.0% ± 17.4% (P < 0.001), with a lateral shift of the mechanical axis. The AJLO-G decreased with valgization of ankle orientation (7.8° ± 4.8° to 0.4° ± 3.8°; P < 0.001). The change in the HKA angle was significantly correlated with that in the AJLO-G (correlation coefficient = 0.716; P < 0.001) but not with the change in the WBL ratio of the ankle joint. CONCLUSION Knee arthroplasty and HTO corrected the Genu Varum deformity, which influenced the lateral shift of the WBL of the ankle joint and valgization of the ankle joint line orientation.

  • Change in the weight-bearing line ratio of the ankle joint and ankle joint line orientation after knee arthroplasty and high tibial osteotomy in patients with Genu Varum deformity
    International Orthopaedics, 2020
    Co-Authors: Jae Gyoon Kim, Dong Hun Suh, Gi Won Choi, Bong Mo Koo, Sang-gyun Kim
    Abstract:

    Purpose Several studies reported that excessive correction of severe Genu Varum deformity with total knee arthroplasty or high tibial osteotomy (HTO) could result in ankle joint pain and osteoarthritis progression. However, few studies have evaluated the change in the weight-bearing-line (WBL) ratio of the ankle joint after knee arthroplasty or HTO in patients with Genu Varum deformities. This study aimed to investigate the change in the WBL ratio of the ankle joint and ankle joint line orientation after knee arthroplasty or HTO in patients with Genu Varum deformities. Methods We retrospectively evaluated 40 patients (mean age, 69.9 ± 8.0 years) with Genu Varum deformities of > 5° and underwent knee arthroplasty or HTO. Three radiologic parameters, including (1) the hip-knee-ankle (HKA) angle, (2) WBL ratio of the ankle joint, and (3) ankle joint line orientation relative to the ground (AJLO-G), were assessed using pre-operative and post-operative orthoradiographs. A paired t test was used to evaluate post-operative changes in the three parameters. Correlations between the change in HKA angle and that in the WBL ratio of the ankle joint and AJLO-G were analyzed. Results The mean HKA angle significantly decreased post-operatively (10.6° ± 5.3° to 1.1° ± 3.4°; P  

Chong Bum Chang - One of the best experts on this subject based on the ideXlab platform.

  • aggravation of ankle varus incongruency following total knee replacement correcting 10 of Genu Varum deformity a radiographic assessment
    Journal of Arthroplasty, 2020
    Co-Authors: Chong Bum Chang, Moon Seok Park, Chin Youb Chung, Ji Hye Choi, Jong Seop Kim, Kyoung Min Lee
    Abstract:

    Abstract Background This study aimed to investigate the change in ankle varus incongruencies following total knee replacement (TKR) in patients with preoperative Genu Varum deformity of ≥10°. Methods The study cohort was composed of patients who underwent TKR in a single institution for knee osteoarthritis with preoperative Genu Varum deformity of ≥10° and concomitant varus ankle incongruencies. Eight radiographic measurements were evaluated preoperatively and postoperatively: mechanical tibiofemoral angle, mechanical lateral distal femoral angle, medial proximal tibial angle, lateral distal tibial angle, tibial plafond inclination, talar inclination, tibiotalar tilt angle (TTTA), and tibia-mechanical axis angle. Of these, TTTA represented the quantitative degree of ankle joint incongruency. Results A total of 110 patients (male = 2; female = 108) were included in the analysis. The mean patient age was 68.9 (standard deviation [SD] 7.2) years at the time of TKR. All radiographic measurements showed significant changes postoperatively, representing the appropriate correction of Genu Varum deformity and restoration of the mechanical axis. Nineteen patients (17.3%) showed postoperative decrease in TTTA, 2 (1.8%) remained the same, and 89 (80.9%) showed increase. Overall, mean preoperative and postoperative TTTA were 3.3° (SD 2.2°) and 4.7° (SD 2.9°), respectively (P Conclusion Varus ankle incongruencies showed aggravation following TKR despite correction of Genu Varum deformity and restoration of the mechanical axis. This could be an important cause of postoperative increase or development of ankle pain following TKR. Therefore, patients with preoperative varus ankle incongruencies need to be warned of possible aggravation of ankle symptoms and be evaluated before TKR. Level of Evidence Prognostic level III.

  • Aggravation of Ankle Varus Incongruency Following Total Knee Replacement Correcting ≥10° of Genu Varum Deformity: A Radiographic Assessment.
    The Journal of arthroplasty, 2020
    Co-Authors: Chong Bum Chang, Moon Seok Park, Chin Youb Chung, Ji Hye Choi, Jong Seop Kim, Kyoung Min Lee
    Abstract:

    Abstract Background This study aimed to investigate the change in ankle varus incongruencies following total knee replacement (TKR) in patients with preoperative Genu Varum deformity of ≥10°. Methods The study cohort was composed of patients who underwent TKR in a single institution for knee osteoarthritis with preoperative Genu Varum deformity of ≥10° and concomitant varus ankle incongruencies. Eight radiographic measurements were evaluated preoperatively and postoperatively: mechanical tibiofemoral angle, mechanical lateral distal femoral angle, medial proximal tibial angle, lateral distal tibial angle, tibial plafond inclination, talar inclination, tibiotalar tilt angle (TTTA), and tibia-mechanical axis angle. Of these, TTTA represented the quantitative degree of ankle joint incongruency. Results A total of 110 patients (male = 2; female = 108) were included in the analysis. The mean patient age was 68.9 (standard deviation [SD] 7.2) years at the time of TKR. All radiographic measurements showed significant changes postoperatively, representing the appropriate correction of Genu Varum deformity and restoration of the mechanical axis. Nineteen patients (17.3%) showed postoperative decrease in TTTA, 2 (1.8%) remained the same, and 89 (80.9%) showed increase. Overall, mean preoperative and postoperative TTTA were 3.3° (SD 2.2°) and 4.7° (SD 2.9°), respectively (P Conclusion Varus ankle incongruencies showed aggravation following TKR despite correction of Genu Varum deformity and restoration of the mechanical axis. This could be an important cause of postoperative increase or development of ankle pain following TKR. Therefore, patients with preoperative varus ankle incongruencies need to be warned of possible aggravation of ankle symptoms and be evaluated before TKR. Level of Evidence Prognostic level III.

H. A.-m. Abdel-moneim - One of the best experts on this subject based on the ideXlab platform.

  • Percutaneous high tibial closed-wedge corticotomy and casting for treating Genu Varum in adolescents
    MUSCULOSKELETAL SURGERY, 2021
    Co-Authors: H. A.-m. Abdel-moneim
    Abstract:

    Purpose Diverse surgical modalities have been designated for the treatment of Genu Varum deformity. However, other studies have not constantly confirmed which technique to be better than the other. The use of hardware, bone graft or bone substitute have their own risks. In this study, simple technique of percutaneous high tibial closed-wedge corticotomy and casting for treating Genu Varum in average body-built adolescents without hardware fixation was reported. Methods An overall 22 knees of 16 average-weight adolescents having Genu Varum with a mean age of 14.8 years (range, 12–18 years) underwent percutaneous high tibial closed-wedge corticotomy and casting. The study was conducted between May 2017 and January 2020. The typical follow-up duration was ten months (range, 8–22 months). Clinical and radiological evaluation for all patients was implemented. Results Mean postoperative Rasmussen clinical score was 27 (range, 24–30), with 16 excellent and six good results. The tibiofemoral angle improved from a mean of 18.2 degree varus (range, 14–25 degree varus) preoperatively to 1.3 degree valgus (range, 0–8 degree valgus) postoperatively, indicating a significant improvement ( P 

H A M Abdelmoneim - One of the best experts on this subject based on the ideXlab platform.

  • percutaneous high tibial closed wedge corticotomy and casting for treating Genu Varum in adolescents
    Musculoskeletal Surgery, 2021
    Co-Authors: H A M Abdelmoneim
    Abstract:

    PURPOSE Diverse surgical modalities have been designated for the treatment of Genu Varum deformity. However, other studies have not constantly confirmed which technique to be better than the other. The use of hardware, bone graft or bone substitute have their own risks. In this study, simple technique of percutaneous high tibial closed-wedge corticotomy and casting for treating Genu Varum in average body-built adolescents without hardware fixation was reported. METHODS An overall 22 knees of 16 average-weight adolescents having Genu Varum with a mean age of 14.8 years (range, 12-18 years) underwent percutaneous high tibial closed-wedge corticotomy and casting. The study was conducted between May 2017 and January 2020. The typical follow-up duration was ten months (range, 8-22 months). Clinical and radiological evaluation for all patients was implemented. RESULTS Mean postoperative Rasmussen clinical score was 27 (range, 24-30), with 16 excellent and six good results. The tibiofemoral angle improved from a mean of 18.2 degree varus (range, 14-25 degree varus) preoperatively to 1.3 degree valgus (range, 0-8 degree valgus) postoperatively, indicating a significant improvement (P < 0.05). Bone union was achieved at a mean of ten weeks (range, 8-14 weeks). None of the patients sustained nonunion, delayed union, infection, or knee stiffness. CONCLUSIONS Percutaneous high tibial closed-wedge corticotomy and casting is a minimally invasive procedure for treating Genu Varum in adolescents. Good results are able to be attained with proper patient selection and meticulous surgical technique.