Lateral Meniscus

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Masayuki Hamada - One of the best experts on this subject based on the ideXlab platform.

Jin Hwan Ahn - One of the best experts on this subject based on the ideXlab platform.

  • arthroscopic Meniscus repair for recurrent subluxation of the Lateral Meniscus
    Knee Surgery Sports Traumatology Arthroscopy, 2018
    Co-Authors: Jin Hwan Ahn, Sang Hak Lee, Kangil Kim, Juhyun Nam
    Abstract:

    This study was undertaken to diagnose and to document the clinical results and technical aspects of arthroscopic Meniscus repair for recurrent subluxation with peripheral tears around the popliteal hiatus of the Lateral Meniscus. Twenty-three patients (24 knees) with symptomatic recurrent subluxation of the Lateral Meniscus treated by arthroscopic Meniscus repair were included. The inclusion criteria were: (1) patients with knee pain, locking or snapping symptoms despite 3 months of conservative treatment; (2) non-discoid Lateral Meniscus; (3) stable knee, and (4) tears involving the red–white or red–red zone. All tears were repaired by either the modified all-inside suture technique only or a combination of the modified all-inside and modified outside-in suture techniques. Clinical results were evaluated preoperatively and at final follow-up according to Tegner activity level, Lysholm knee, and Hospital for Special Surgery (HSS) scores. No reoperations were required after a median follow-up of 41 months (range 24–124). Although recurrence of a locking episode was documented in one knee and catching sensations were experienced in three knees, those patients did not require reoperation. At the last follow-up, the median Tegner activity level had improved significantly from 4 (range 2–6) to 7 (range 3–10, p < 0.0001), the median Lysholm knee score improved from 76 (range 25–90) preoperatively to 94 (range 76–100) at final follow-up (p < 0.0001), and the median preoperative HSS score improved from 86 to 95 at final follow-up (p < 0.0001). The described arthroscopic Meniscus suture technique is effective for treating symptomatic recurrent subluxation of the Lateral Meniscus without any complications or recurrence. Clinical suspicion and understanding of recurrent subluxation with Lateral Meniscus are important to diagnose the disease especially when definite meniscal tear signs are absent on magnetic resonance imaging. IV.

  • long term results of arthroscopic reshaping for symptomatic discoid Lateral Meniscus in children
    Arthroscopy, 2015
    Co-Authors: Jin Hwan Ahn, Joon Ho Wang, Kangil Kim, Jong Wook Jeon, Young Chu Cho, Sang Hak Lee
    Abstract:

    Purpose To assess the long-term clinical and radiographic results of arthroscopic reshaping with or without peripheral Meniscus repair for the treatment of symptomatic discoid Lateral Meniscus in children. Methods This study included 38 children (48 knees) who underwent arthroscopic surgery for symptomatic discoid Lateral Meniscus. The mean age at operation was 9.9 years (range, 4 to 15 years), and the mean follow-up period was 10.1 years (range, 8 to 14 years). Arthroscopic partial meniscectomy was performed in 22 knees (group A); partial meniscectomy with repair, in 18 knees (group B); and subtotal meniscectomy, in 8 knees (group C). Clinical and radiographic results were evaluated preoperatively and at the final follow-up. Results According to the scale of Ikeuchi, 94% of cases showed excellent or good results clinically. At the final follow-up, the median Tegner activity level was 7 (range, 4 to 10). The mean Lysholm knee score improved from 74.9 ± 10.6 to 97.6 ± 4.0, and the mean Hospital for Special Surgery score improved from 80.8 ± 8.9 to 97.8 ± 3.6 ( P Conclusions Arthroscopic reshaping for symptomatic discoid Lateral Meniscus in children led to satisfactory clinical outcomes after a mean of 10.1 years. However, progressive degenerative changes appeared in 40% of the patients. The subtotal meniscectomy group had significantly increased degenerative changes compared with partial meniscectomy with or without repair. Level of Evidence Level IV, therapeutic case series.

  • do the radiographic findings of symptomatic discoid Lateral Meniscus in children differ from normal control subjects
    Knee Surgery Sports Traumatology Arthroscopy, 2015
    Co-Authors: Sang Hee Choi, Jin Hwan Ahn, Kangil Kim, Su Min Kang, Jungsuk Kim, Sang Hak Lee
    Abstract:

    The aim of this study was to quantitatively compare radiographic findings of symptomatic discoid Lateral Meniscus in children with those of matched controls. Seventy-eight consecutive children (91 knees) who underwent arthroscopic surgery for a symptomatic discoid Lateral Meniscus (discoid group) were included. Another 91 age- and sex-matched controls with normal medial and Lateral menisci on the basis of magnetic resonance imaging findings were included in this study (control group). Each plain radiograph was evaluated from the anteroposterior view for the following variables: height of the Lateral tibial spine, Lateral joint space distance, height of the fibular head, squaring of the Lateral femoral condyle, obliquity of the Lateral tibial plateau and cupping of the Lateral tibial plateau. Lateral femoral condylar notch was evaluated in Lateral view. Statistical analyses were used to determine the differences between the two groups. A significant difference in the mean height of the Lateral tibial spine, Lateral joint space distance, height of the fibular head, and obliquity of the Lateral tibial plateau distinguished the two groups (p < 0.0001). However, there was no statistical difference in the condylar off sign, squaring of the Lateral femoral condyle, cupping of the Lateral tibial plateau and Lateral femoral condylar notch between groups (n.s.). The cut-off values for the height of the Lateral tibial spine (6 mm), Lateral joint space distance (8 mm), height of the fibular head (14.9 mm) and obliquity of the Lateral tibial plateau (17.6°) were determined. With these cut-off values in diagnosing discoid Lateral Meniscus, the sensitivity and accuracy of height of the fibular head were 78 and 70 %, respectively. Several plain radiographic findings in symptomatic discoid Lateral Meniscus in children were significantly different from those in normal control. These findings would be helpful in screening tool of discoid Lateral Meniscus for children. II.

  • arthroscopic repair of bucket handle tears of the Lateral Meniscus
    Knee Surgery Sports Traumatology Arthroscopy, 2015
    Co-Authors: Jin Hwan Ahn, Joon Ho Wang, Kangil Kim, Bong Soo Kyung, Min Chul Seo, Sang Hak Lee
    Abstract:

    Purpose This study was undertaken to document the clinical results of arthroscopic Meniscus repair for treatment of displaced bucket-handle tears of the Lateral Meniscus.

  • symptomatic torn discoid Lateral Meniscus in adults
    Knee Surgery Sports Traumatology Arthroscopy, 2011
    Co-Authors: Jin Hwan Ahn, Yong Seuk Lee, Jae Chul Yoo, Moon Jong Chang, Sang Hee Choi, Sooho Bae, Young Ryeol Bae
    Abstract:

    The purposes of this study were to report degenerative changes that coexist with a symptomatic torn discoid Lateral Meniscus in adults and to analyze the factors associated with the accompanied degenerative changes. From 1997 to 2008, 329 knees in the 305 patients were included. Associations between the status of the Meniscus and the coexisting degenerative changes on the images and the arthroscopic findings were statistically analyzed. Marginal osteophyte was seen on conventional radiography in 118 patients (36%). Ninety patients (27%) had arthroscopically confirmed chondral lesion. Age, duration of symptoms, the type of Meniscus, the type of tear and the magnetic resonance image classification were associated with the formation of the marginal osteophyte and chondral lesion on univariate analysis (P < 0.05). After conducting multivariate analysis, the type of tear and magnetic resonance image classification had a statistically significant association with the severity of marginal osteophyte and chondral lesion (P < 0.05).

Sang Hak Lee - One of the best experts on this subject based on the ideXlab platform.

  • editorial commentary why should the contraLateral side be examined in patients with symptomatic discoid Lateral Meniscus
    Arthroscopy, 2019
    Co-Authors: Sang Hak Lee
    Abstract:

    Abstract Recent reports have found the rate of biLateral discoid Lateral Meniscus (DLM) to be high (79%-97%) in patients with uniLaterally symptomatic DLM; the associated torn Meniscus incidence is also high at 33%. The present study results indicated that older, symptomatic DLM patients with more degenerative changes may be at risk for a similar condition in the contraLateral knee. Long-term follow-up with magnetic resonance imaging screening for asymptomatic contraLateral knees is necessary to determine the fate of the contraLateral knee.

  • arthroscopic Meniscus repair for recurrent subluxation of the Lateral Meniscus
    Knee Surgery Sports Traumatology Arthroscopy, 2018
    Co-Authors: Jin Hwan Ahn, Sang Hak Lee, Kangil Kim, Juhyun Nam
    Abstract:

    This study was undertaken to diagnose and to document the clinical results and technical aspects of arthroscopic Meniscus repair for recurrent subluxation with peripheral tears around the popliteal hiatus of the Lateral Meniscus. Twenty-three patients (24 knees) with symptomatic recurrent subluxation of the Lateral Meniscus treated by arthroscopic Meniscus repair were included. The inclusion criteria were: (1) patients with knee pain, locking or snapping symptoms despite 3 months of conservative treatment; (2) non-discoid Lateral Meniscus; (3) stable knee, and (4) tears involving the red–white or red–red zone. All tears were repaired by either the modified all-inside suture technique only or a combination of the modified all-inside and modified outside-in suture techniques. Clinical results were evaluated preoperatively and at final follow-up according to Tegner activity level, Lysholm knee, and Hospital for Special Surgery (HSS) scores. No reoperations were required after a median follow-up of 41 months (range 24–124). Although recurrence of a locking episode was documented in one knee and catching sensations were experienced in three knees, those patients did not require reoperation. At the last follow-up, the median Tegner activity level had improved significantly from 4 (range 2–6) to 7 (range 3–10, p < 0.0001), the median Lysholm knee score improved from 76 (range 25–90) preoperatively to 94 (range 76–100) at final follow-up (p < 0.0001), and the median preoperative HSS score improved from 86 to 95 at final follow-up (p < 0.0001). The described arthroscopic Meniscus suture technique is effective for treating symptomatic recurrent subluxation of the Lateral Meniscus without any complications or recurrence. Clinical suspicion and understanding of recurrent subluxation with Lateral Meniscus are important to diagnose the disease especially when definite meniscal tear signs are absent on magnetic resonance imaging. IV.

  • long term results of arthroscopic reshaping for symptomatic discoid Lateral Meniscus in children
    Arthroscopy, 2015
    Co-Authors: Jin Hwan Ahn, Joon Ho Wang, Kangil Kim, Jong Wook Jeon, Young Chu Cho, Sang Hak Lee
    Abstract:

    Purpose To assess the long-term clinical and radiographic results of arthroscopic reshaping with or without peripheral Meniscus repair for the treatment of symptomatic discoid Lateral Meniscus in children. Methods This study included 38 children (48 knees) who underwent arthroscopic surgery for symptomatic discoid Lateral Meniscus. The mean age at operation was 9.9 years (range, 4 to 15 years), and the mean follow-up period was 10.1 years (range, 8 to 14 years). Arthroscopic partial meniscectomy was performed in 22 knees (group A); partial meniscectomy with repair, in 18 knees (group B); and subtotal meniscectomy, in 8 knees (group C). Clinical and radiographic results were evaluated preoperatively and at the final follow-up. Results According to the scale of Ikeuchi, 94% of cases showed excellent or good results clinically. At the final follow-up, the median Tegner activity level was 7 (range, 4 to 10). The mean Lysholm knee score improved from 74.9 ± 10.6 to 97.6 ± 4.0, and the mean Hospital for Special Surgery score improved from 80.8 ± 8.9 to 97.8 ± 3.6 ( P Conclusions Arthroscopic reshaping for symptomatic discoid Lateral Meniscus in children led to satisfactory clinical outcomes after a mean of 10.1 years. However, progressive degenerative changes appeared in 40% of the patients. The subtotal meniscectomy group had significantly increased degenerative changes compared with partial meniscectomy with or without repair. Level of Evidence Level IV, therapeutic case series.

  • do the radiographic findings of symptomatic discoid Lateral Meniscus in children differ from normal control subjects
    Knee Surgery Sports Traumatology Arthroscopy, 2015
    Co-Authors: Sang Hee Choi, Jin Hwan Ahn, Kangil Kim, Su Min Kang, Jungsuk Kim, Sang Hak Lee
    Abstract:

    The aim of this study was to quantitatively compare radiographic findings of symptomatic discoid Lateral Meniscus in children with those of matched controls. Seventy-eight consecutive children (91 knees) who underwent arthroscopic surgery for a symptomatic discoid Lateral Meniscus (discoid group) were included. Another 91 age- and sex-matched controls with normal medial and Lateral menisci on the basis of magnetic resonance imaging findings were included in this study (control group). Each plain radiograph was evaluated from the anteroposterior view for the following variables: height of the Lateral tibial spine, Lateral joint space distance, height of the fibular head, squaring of the Lateral femoral condyle, obliquity of the Lateral tibial plateau and cupping of the Lateral tibial plateau. Lateral femoral condylar notch was evaluated in Lateral view. Statistical analyses were used to determine the differences between the two groups. A significant difference in the mean height of the Lateral tibial spine, Lateral joint space distance, height of the fibular head, and obliquity of the Lateral tibial plateau distinguished the two groups (p < 0.0001). However, there was no statistical difference in the condylar off sign, squaring of the Lateral femoral condyle, cupping of the Lateral tibial plateau and Lateral femoral condylar notch between groups (n.s.). The cut-off values for the height of the Lateral tibial spine (6 mm), Lateral joint space distance (8 mm), height of the fibular head (14.9 mm) and obliquity of the Lateral tibial plateau (17.6°) were determined. With these cut-off values in diagnosing discoid Lateral Meniscus, the sensitivity and accuracy of height of the fibular head were 78 and 70 %, respectively. Several plain radiographic findings in symptomatic discoid Lateral Meniscus in children were significantly different from those in normal control. These findings would be helpful in screening tool of discoid Lateral Meniscus for children. II.

  • arthroscopic repair of bucket handle tears of the Lateral Meniscus
    Knee Surgery Sports Traumatology Arthroscopy, 2015
    Co-Authors: Jin Hwan Ahn, Joon Ho Wang, Kangil Kim, Bong Soo Kyung, Min Chul Seo, Sang Hak Lee
    Abstract:

    Purpose This study was undertaken to document the clinical results of arthroscopic Meniscus repair for treatment of displaced bucket-handle tears of the Lateral Meniscus.

Mark D Miller - One of the best experts on this subject based on the ideXlab platform.

  • effect of tibial tunnel placement using the Lateral Meniscus as a landmark on clinical outcomes of anatomic single bundle anterior cruciate ligament reconstruction
    American Journal of Sports Medicine, 2021
    Co-Authors: Kadir Buyukdogan, Michael S Laidlaw, Michael A Fox, Michelle E Kew, Mark D Miller
    Abstract:

    Background:It remains unclear if use of the Lateral Meniscus anterior horn (LMAH) as a landmark will produce consistent tunnel positions in the anteroposterior (AP) distance across the tibial plate...

  • a prospective evaluation of the anterior horn of the Lateral Meniscus as a landmark for tibial tunnel placement in anterior cruciate ligament acl reconstruction
    Knee, 2016
    Co-Authors: Brian C Werner, Tyrrell M Burrus, Winston F Gwathmey, Mark D Miller
    Abstract:

    Abstract Background The goal of this study was to prospectively evaluate the accuracy and consistency of the anterior horn of the Lateral Meniscus as a landmark in achieving the desired tibial tunnel location during primary anterior cruciate ligament (ACL) reconstruction. Methods One hundred consecutive adult patients undergoing primary ACL reconstruction were enrolled in the study. One sports-fellowship trained surgeon performed all ACL reconstructions using independent tunnel drilling with an accessory anteromedial portal for the femoral tunnel. All guide pins for the tibial tunnel were placed using a 55-degree guide using the posterior border of the anterior horn of the Lateral Meniscus as a landmark. Following pin placement, a true Lateral fluoroscopic image was obtained. These were digitally analyzed to measure the location of the pin along the length of the tibial plateau. Results The average anteroposterior (A–P) distance achieved using the posterior border of the anterior horn of the Lateral Meniscus as a landmark for tibial tunnel placement was 37.0% ± 5.2% (mean ± standard deviation) [range 26.4%–49.2%]. 66% of tibial tunnels were located between 30.0% and 39.9% of the A–P tibial distance. Only 18% of tibial tunnels localized between 40.0% and 44.9%, the area of the anatomic footprint described by Staubli and Rauschning [9] 16% of patients were significant outliers, with tunnels localizing to 25.0%–29.9% (6 patients) or 45.0%–49.9% (10 patients). Conclusions Use of the posterior border of the anterior horn of the Lateral Meniscus as a landmark for tibial tunnel placement during anatomic ACL reconstruction yields an inconsistent tunnel location. Level of Evidence II, Prospective study.

Tomoki Ohori - One of the best experts on this subject based on the ideXlab platform.

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