Hypermobile Anterior Horn of the Lateral Meniscus: A Case Report and Literature Review
Hypermobile meniscus is known as one of the causes of knee pain and locking or limitation of the range of motion during knee flexion, even when there is no evidence of meniscus tear on magnetic resonance imaging (MRI). Most such cases show excessive hypermobility of the posterior part of the lateral...
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| Format: | Article |
| Language: | English |
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Wiley
2020-01-01
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| Series: | Case Reports in Orthopedics |
| Online Access: | http://dx.doi.org/10.1155/2020/8870156 |
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| author | Hirotaka Nakashima Yasuhiro Takahara Yoichiro Uchida Hisayoshi Kato Satoru Itani Yoshitaka Tsujimura Makoto Nakamura Yuichi Iwasaki |
| author_facet | Hirotaka Nakashima Yasuhiro Takahara Yoichiro Uchida Hisayoshi Kato Satoru Itani Yoshitaka Tsujimura Makoto Nakamura Yuichi Iwasaki |
| author_sort | Hirotaka Nakashima |
| collection | DOAJ |
| description | Hypermobile meniscus is known as one of the causes of knee pain and locking or limitation of the range of motion during knee flexion, even when there is no evidence of meniscus tear on magnetic resonance imaging (MRI). Most such cases show excessive hypermobility of the posterior part of the lateral meniscus. This case report presented a rare case of a hypermobile anterior horn of the lateral meniscus. An 18-year-old woman visited our hospital for left knee pain without trauma. Her physical examination showed a limited range of motion and tenderness in the lateral joint space. However, her MRI did not show any abnormalities. After conservative treatment failed, we performed arthroscopic surgery. The arthroscopic evaluation showed no meniscus and no other intraarticular injury. However, the anterior horn of the lateral meniscus was easily translated beyond the lateral condyle by using a probe. Thus, hypermobile anterior horn of the lateral meniscus was diagnosed. The meniscus was stabilized by the outside-in technique. Immediately after surgery, the catching symptom and pain were alleviated. After three-and-a-half months, she returned to work. The Lysholm score improved from 55, preoperatively, to 100, 1-year postoperatively. In conclusion, careful arthroscopic evaluation is essential for the diagnosis of a hypermobile anterior horn of the lateral meniscus. Arthroscopic meniscus stabilization provides a good outcome for hypermobile meniscus. |
| format | Article |
| id | doaj-art-df50577e090c4cb8949668d0fb4d9662 |
| institution | Kabale University |
| issn | 2090-6749 2090-6757 |
| language | English |
| publishDate | 2020-01-01 |
| publisher | Wiley |
| record_format | Article |
| series | Case Reports in Orthopedics |
| spelling | doaj-art-df50577e090c4cb8949668d0fb4d96622025-02-03T01:28:33ZengWileyCase Reports in Orthopedics2090-67492090-67572020-01-01202010.1155/2020/88701568870156Hypermobile Anterior Horn of the Lateral Meniscus: A Case Report and Literature ReviewHirotaka Nakashima0Yasuhiro Takahara1Yoichiro Uchida2Hisayoshi Kato3Satoru Itani4Yoshitaka Tsujimura5Makoto Nakamura6Yuichi Iwasaki7Department of Orthopedic Surgery, Nippon Kokan Fukuyama Hospital, 1844 Tsunoshita Daimon-cho, Fukuyama City, Hiroshima 721-0927, JapanDepartment of Orthopedic Surgery, Nippon Kokan Fukuyama Hospital, 1844 Tsunoshita Daimon-cho, Fukuyama City, Hiroshima 721-0927, JapanDepartment of Orthopedic Surgery, Nippon Kokan Fukuyama Hospital, 1844 Tsunoshita Daimon-cho, Fukuyama City, Hiroshima 721-0927, JapanDepartment of Orthopedic Surgery, Nippon Kokan Fukuyama Hospital, 1844 Tsunoshita Daimon-cho, Fukuyama City, Hiroshima 721-0927, JapanDepartment of Orthopedic Surgery, Nippon Kokan Fukuyama Hospital, 1844 Tsunoshita Daimon-cho, Fukuyama City, Hiroshima 721-0927, JapanDepartment of Orthopedic Surgery, Nippon Kokan Fukuyama Hospital, 1844 Tsunoshita Daimon-cho, Fukuyama City, Hiroshima 721-0927, JapanDepartment of Orthopedic Surgery, Nippon Kokan Fukuyama Hospital, 1844 Tsunoshita Daimon-cho, Fukuyama City, Hiroshima 721-0927, JapanDepartment of Orthopedic Surgery, Nippon Kokan Fukuyama Hospital, 1844 Tsunoshita Daimon-cho, Fukuyama City, Hiroshima 721-0927, JapanHypermobile meniscus is known as one of the causes of knee pain and locking or limitation of the range of motion during knee flexion, even when there is no evidence of meniscus tear on magnetic resonance imaging (MRI). Most such cases show excessive hypermobility of the posterior part of the lateral meniscus. This case report presented a rare case of a hypermobile anterior horn of the lateral meniscus. An 18-year-old woman visited our hospital for left knee pain without trauma. Her physical examination showed a limited range of motion and tenderness in the lateral joint space. However, her MRI did not show any abnormalities. After conservative treatment failed, we performed arthroscopic surgery. The arthroscopic evaluation showed no meniscus and no other intraarticular injury. However, the anterior horn of the lateral meniscus was easily translated beyond the lateral condyle by using a probe. Thus, hypermobile anterior horn of the lateral meniscus was diagnosed. The meniscus was stabilized by the outside-in technique. Immediately after surgery, the catching symptom and pain were alleviated. After three-and-a-half months, she returned to work. The Lysholm score improved from 55, preoperatively, to 100, 1-year postoperatively. In conclusion, careful arthroscopic evaluation is essential for the diagnosis of a hypermobile anterior horn of the lateral meniscus. Arthroscopic meniscus stabilization provides a good outcome for hypermobile meniscus.http://dx.doi.org/10.1155/2020/8870156 |
| spellingShingle | Hirotaka Nakashima Yasuhiro Takahara Yoichiro Uchida Hisayoshi Kato Satoru Itani Yoshitaka Tsujimura Makoto Nakamura Yuichi Iwasaki Hypermobile Anterior Horn of the Lateral Meniscus: A Case Report and Literature Review Case Reports in Orthopedics |
| title | Hypermobile Anterior Horn of the Lateral Meniscus: A Case Report and Literature Review |
| title_full | Hypermobile Anterior Horn of the Lateral Meniscus: A Case Report and Literature Review |
| title_fullStr | Hypermobile Anterior Horn of the Lateral Meniscus: A Case Report and Literature Review |
| title_full_unstemmed | Hypermobile Anterior Horn of the Lateral Meniscus: A Case Report and Literature Review |
| title_short | Hypermobile Anterior Horn of the Lateral Meniscus: A Case Report and Literature Review |
| title_sort | hypermobile anterior horn of the lateral meniscus a case report and literature review |
| url | http://dx.doi.org/10.1155/2020/8870156 |
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