研究者詳細 - 田島　卓也

Predictors of Spondylolysis on Magnetic Resonance Imaging in Adolescent Athletes With Low Back Pain 査読あり

Yokoe T., Tajima T., Sugimura H., Kubo S., Nozaki S., Yamaguchi N., Morita Y., Chosa E.

Orthopaedic Journal of Sports Medicine 9 ( 4 ) 2325967121995466 2021年1月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Orthopaedic Journal of Sports Medicine

Background: Spondylolysis and undiagnosed mechanical low back pain (UMLBP) are the main causes of low back pain (LBP) in adolescent athletes. No studies have evaluated the difference in clinical and radiographic factors between these 2 conditions. Furthermore, it remains unclear which adolescent athletes with LBP should undergo advanced imaging examination for spondylolysis. Purpose: To compare the clinical and radiographic factors of adolescent athletes with spondylolysis and UMLBP who did not have neurological symptoms or findings before magnetic resonance imaging (MRI) evaluation and to determine the predictors of spondylolysis findings on MRI. Study Design: Cohort study, Level of evidence, 3. Methods: The study population included 122 adolescent athletes aged 11 to 18 years who had LBP without neurological symptoms or findings and who underwent MRI. Of these participants, 75 were ultimately diagnosed with spondylolysis, and 47 were diagnosed with UMLBP. Clinical factors and the following radiographic parameters were compared between the 2 groups: spina bifida occulta, lumbar lordosis (LL) angle, and the ratio of the interfacet distance of L1 to that of L5 (L1:L5 ratio, %). A logistic regression analysis was performed to evaluate independent predictors of spondylolysis on MRI scans. Results: Significantly more athletes with spondylolysis were male (82.7% vs 48.9%; P <.001), had a greater LL angle (22.8° ± 8.1° vs 19.3° ± 8.5°; P =.02), and had a higher L1:L5 ratio (67.4% ± 6.3% vs 63.4% ± 6.6%; P =.001) versus athletes with UMLBP. A multivariate analysis revealed that male sex (odds ratio [OR], 4.66; P <.001) and an L1:L5 ratio of >65% (OR, 3.48; P =.003) were independent predictors of positive findings of spondylolysis on MRI scans. Conclusion: The study findings indicated that sex and the L1:L5 ratio are important indicators for whether to perform MRI as an advanced imaging examination for adolescent athletes with LBP who have no neurological symptoms and findings.

DOI： 10.1177/2325967121995466

Symptomatic discoid lateral meniscus shows a relationship between types and tear patterns, and between causes of clinical symptom onset and the age distribution 査読あり

Yamaguchi N., Chosa E., Tajima T., Morita Y., Yokoe T.

Knee Surgery, Sports Traumatology, Arthroscopy 30 ( 4 ) 1436 - 1442 2021年1月

記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：Knee Surgery, Sports Traumatology, Arthroscopy

Purpose: Discoid meniscus is a congenital abnormality of the lateral meniscus and is seen more frequently in East Asia. The purpose of this study was to retrospectively assess the relationship between discoid lateral meniscus (DLM) types and tear patterns and causes of age-specific clinical symptom onset. Methods: Of 1650 arthroscopic surgeries over a 20-year period, 138 (105 patients) were performed for DLM and were evaluated in this study. The mean age at surgery was 21.5 ± 15.8 years. The DLM type was classified by Watanabe’s classification, and tear patterns were classified by the modified Bin’s classification as simple horizontal, complicated horizontal, longitudinal, radial, complex, and no tear. Additionally, patients were divided by age group (< 10, 10–19, 20–39, 40–59, and ≥ 60 years) and classified according to the causes of clinical symptom onset as follows: sports activities, minor trauma in daily living, and no traumatic episode. Results: The DLM was complete in 78 (56.5%) knees and incomplete in 60 (43.5%); no Wrisberg type DLM was observed. Simple horizontal and complicated horizontal tears were significantly more frequent in complete DLM, whereas radial tears and no tears were significantly more frequent in incomplete DLM (p < 0.0001). When classified by age group, 74 (53.6%) knees with DLMs were found in teenagers. Sports activities caused symptom onset significantly more often in teenagers, no traumatic episode caused symptom onset in patients aged < 10 years, and minor trauma in daily living caused symptom onset in patients aged 40–59 years and ≥ 60 years (p < 0.0001). No relationship was found between the age distribution and tear patterns; however, the absence of tears tended to be more common in teenaged patients, and complicated horizontal tears were more common in patients over 20 years of age. Conclusion: Symptomatic DLM occurred most often in teenagers. A relationship was identified between the DLM types and tear patterns, which could be helpful in preoperative planning. Causes of clinical symptom onset in patients with DLM were characterised by age group, which might help clinicians to suspect the presence of DLM. Level of evidence: Level IV.

DOI： 10.1007/s00167-021-06635-3

A case of nail-patella syndrome with osteochondral lesion of the lateral femoral condyle accompanied with anomalies of anterior horns of the menisci and lateral femoral condyle 査読あり

Yokoe T., Tajima T., Yamaguchi N., Morita Y., Chosa E.

Journal of Orthopaedic Science 28 ( 6 ) 1543 - 1547 2021年

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：Journal of Orthopaedic Science

DOI： 10.1016/j.jos.2021.09.004

The Ratio of Stress to Nonstress Anterior Talofibular Ligament Length on Ultrasonography: Normative Values

小児の運動・スポーツの意義

帖佐悦男

日本整形外科スポーツ医学会雑誌 2021年

掲載種別：研究論文（学術雑誌）

Yokoe T., Tajima T., Kawagoe S., Yamaguchi N., Morita Y., Chosa E.

Orthopaedic Journal of Sports Medicine 9 ( 11 ) 23259671211056305 2021年

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：Orthopaedic Journal of Sports Medicine

Background: Stress ultrasonography (US) has been shown to be a valid procedure for evaluating chronic anterior talofibular ligament (ATFL) injury. The ratio of stress/nonstress ATFL length (ATFL ratio) as measured on US is clinically useful; however, there are no published normative data concerning this ratio. Purpose: To report a normative value of the ATFL ratio on US and evaluate the relationships between sex, generalized joint laxity (GJL), and the grade of anterior drawer test (ADT). Study Design: Cross-sectional study; Level of evidence, 3. Methods: The ATFL lengths were prospectively measured in the stress and nonstress positions (manual maximal anterior drawer position) for participants with noninjured ankles from March 2020 to March 2021. GJL was defined as a Beighton score ≥4. A manual ADT was also performed. The ATFL ratio was calculated, and the relationships between sex, GJL, and ADT grade were evaluated. Results: A total of 333 ankles in 184 participants (mean age, 24.5 ± 2.7 years; range, 20-33 years) were eligible for the analysis. GJL was found in 69 ankles (20.7%). The mean ATFL ratio was 1.08 ± 0.04 (95% CI, 1.08-1.09; range, 1.01-1.24), and there was a significant difference between male (1.07 ± 0.04; 95% CI, 1.07-1.08; range, 1.02-1.23) and female (1.09 ± 0.04; 95% CI, 1.08-1.10; range, 1.01-1.24) ankles (P =.001). In male ankles, the ATFL ratio was significantly greater in participants with GJL (1.11 ± 0.06 vs 1.07 ± 0.03; P =.02) or a higher grade of ADT (grade 2 vs grade 1: 1.11 ± 0.06 vs 1.07 ± 0.03, P =.002). These findings were not observed in female ankles. Conclusion: The normative value of the ATFL ratio on stress US was 1.07 ± 0.04 in men and 1.09 ± 0.04 in women. The ATFL ratio was affected by the presence of GJL in men but not in women. These findings will be useful for future studies seeking to establish the cutoff value of the ATFL ratio for diagnosing chronic lateral ankle stability on stress US.

DOI： 10.1177/23259671211056305

Efficacy of Diagnosing Carpal Tunnel Syndrome Using the Median Nerve Stenosis Rate Measured on Ultrasonographic Sagittal Imagery: Clinical Case-Control Study

Okura T., Sekimoto T., Matsuoka T., Fukuda H., Hamada H., Tajima T., Chosa E.

Hand 2021年

掲載種別：研究論文（学術雑誌）

ヤング率を傾斜させた人工股関節ステムの生体力学的評価

中井亮佑, 落合清秀, 和佐宗樹, 花田修治, 帖佐悦男, 山子剛

日本機械学会九州支部講演論文集 2021年

掲載種別：研究論文（学術雑誌）

特集アキレス腱断裂診療のコツと最近のトピックスアキレス腱断裂の診断査読あり

田島卓也, 帖佐悦男

整形･災害外科 63 ( 12 ) 1627 - 1635 2020年11月

担当区分：筆頭著者掲載種別：研究論文（学術雑誌）出版者・発行元：金原出版

DOI： 10.18888/se.0000001518

コリジョンスポーツにおける至適な頸部周囲筋力と頸椎アライメントの解明：重症頭頸部外傷を予防するために査読あり

田島卓也、山口奈美、黒木修司、森田雄大、帖佐悦男

デサントスポーツ科学 41 ( 0 ) 135 - 144 2020年9月

担当区分：筆頭著者記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：公益財団法人石本記念デサントスポーツ科学振興財団

コリジョンスポーツ選手においては頸椎の退行変性をきたすことがあり，変性が進行すると頚髄損傷などの重大事故につながる危険性も示唆されている．頸椎退行変性とくにアライメント異常には頸部周囲筋力バランスが関与していることも報告されている．コリジョンスポーツ選手の頸椎退行変性予防さらには重症頸椎頚髄損傷予防を目的とし，頸部屈曲・伸展筋力バランスの異常が頸椎退行変性やアライメント異常に関与していると仮説のもと柔道選手及びラグビー選手の頸部周囲筋力と頸椎レントゲンの関連を解析した．対象はメディカルチェック時に頸部周囲筋力測定を実施した柔道選手168名（22-32歳），ラグビー選手203名（18-30歳）であり，このうち頸椎レントゲン検査を受けたのは柔道群55名，ラグビー群58名であった．身長・体重・頸部屈曲筋力・伸展筋力および屈曲/伸展筋力比とも柔道群が有意に大きかったが，体重比は両群間に有意差はなかった．頸椎アライメントにおいては正常群と前弯消失群，後弯変形群の筋力測定値に関連は認めなかったが柔道群においてＳ状変形群の伸展筋力が有意に大きかった（正常群：331.7±48.4N,Ｓ状変形群：420±50.2Ｎ.p<0.05）．屈曲/伸展筋力比では柔道群の前弯消失群（0.67），後弯変形群（0.63），およびラグビー群の椎間腔狭小化有り群（0.54）において正常群（柔道:0.78, ラグビー：0.68）と比較し有意に低下していた（p<0.05）．屈曲/伸展筋力比ひいては相対的な屈曲筋力の低下が柔道におけるアライメント異常およびラグビーにおける椎間腔狭小化に関与している可能性が示唆された．

DOI： 10.57488/descente.41.0_135

Googling Musculoskeletal-Related Pain and Ranking of Medical Associations’ Patient Information Pages: Google Ads Keyword Planner Analysis 査読あり

山口洋一朗, 李徳哲, 永井琢哉, 舩元太郎, 田島卓也, 帖佐悦男

Journal of Medical Internet Research 22 ( 8 ) e18684 2020年8月

担当区分：筆頭著者,　最終著者,　責任著者記述言語：英語掲載種別：研究論文（学術雑誌）出版者・発行元：JMIR Publications

ackground:
Most people currently use the internet to obtain information about many subjects, including health information. Thus, medical associations need to provide accurate medical information websites. Although medical associations have their own patient education pages, it is not clear if these websites actually show up in search results.

Objective:
The aim of this study was to evaluate how well medical associations function as online information providers by searching for information about musculoskeletal-related pain online and determining the ranking of the websites of medical associations.

Methods:
We conducted a Google search for frequently searched keywords. Keywords were extracted using Google Ads Keyword Planner associated with “pain” relevant to the musculoskeletal system from June 2016 to December 2019. The top 20 search queries were extracted and searched using the Google search engine in Japan and the United States.

Results:
The number of suggested queries for “pain” provided by Google Ads Keyword Planner was 930 in the United States and 2400 in Japan. Among the top 20 musculoskeletal-related pain queries chosen, the probability that the medical associations’ websites would appear in the top 10 results was 30% in the United States and 45% in Japan. In five queries each, the associations’ websites did not appear among the top 100 results. No significant difference was found in the rank of the associations’ website search results (P=.28).

Conclusions:
To provide accurate medical information to patients, it is essential to undertake effective measures for search engine optimization. For orthopedic associations, it is necessary that their websites should appear among the top search results.

Clinical and Radiographic Outcomes of Double-Bundle Anterior Cruciate Ligament Reconstruction for Asian Patients with Bone-Patellar Tendon-Bone and Gracilis Tendon Grafts: A Matched-Control Comparison 査読あり

Takuya Tajima、Nami Yamaguchi、Yudai Morita、Makoto Nagasawa、Tomomi Ota、Yoshihiro Nakamura、Takuji Yokoe、Etsuo Chosa

The Journal of Knee Surgery 1 - 8 2020年5月

記述言語：英語掲載種別：研究論文（学術雑誌）

DOI： 10.1055/s-0040-1710376

選手がベストパフォーマンスを発揮するために―チームドクターの役割の変遷― 招待あり査読あり

田島卓也, 中村明彦, 帖佐悦男

日本整形外科スポーツ医学会雑誌 40 ( 3 ) 229 - 235 2020年

記述言語：日本語掲載種別：研究論文（学術雑誌）出版者・発行元：一般社団法人日本整形外科スポーツ医学会

日本ラグビーフットボール協会では万全なメディカルサポート体制を構築すべく種々の施策を行なっている．従来，チームメディカルスタッフとしてドクター1名，アスレティックトレーナー2～3名体制で選手のみならずチームスタッフも含めて日本選手団全員の健康管理を行なっている．チームメディカルスタッフの役割・ミッションとしては「選手がベストパフォーマンスを発揮できるようにサポート」することであり，①外傷障害への対応②コンディション管理③ドーピングコントロール教育・対応があげられる．そのミッションを遂行するためには，整形外科以外の知識・対応，コミュニケーション・連携，などが重要となる．

DOI： 10.34473/jossm.40.3_229