Jiwon Park1, Sang Soo Lee2, Tae Woo Kim3. 1. Department of Orthopedic Surgery, Seoul National University Bundang Hospital, 82, Gumi-ro 173, Bundang-gu, Seongnam-si, Gyeonggi-do, 13620, South Korea. 2. Department of Orthopaedic Surgery, Hallym University Chuncheon Sacred Heart Hospital, 77, Sakju-ro, Chuncheon-si, Gangwon-do, 200-704, South Korea. 3. Department of Orthopedic Surgery, Seoul National University Bundang Hospital, 82, Gumi-ro 173, Bundang-gu, Seongnam-si, Gyeonggi-do, 13620, South Korea. orthopassion@naver.com.
Abstract
PURPOSE: The inferior lateral genicular artery (ILGA) passes around the lateral knee joint, adjacent to the lateral meniscus (LM). ILGA injuries in total knee arthroplasty or arthroscopic surgery can result in recurrent hemarthrosis or painful pseudoaneurysms. Detailed information about the perimeniscal position of the ILGA relative to the LM is necessary to avoid these complications. METHODS: 3-T MR images of 100 knees (mean age 36.3 ± 11.2 years) were retrospectively reviewed. The perimeniscal area was divided into four regions: the anterior, middle, popliteal hiatus, and posterior zones. In each zone, the ILGA diameter, superoinferior position (assessed as the height of the ILGA from the LM base), and distance between the meniscocapsular junction and the ILGA were measured. RESULTS: The distance between the ILGA and meniscocapsular junction was significantly smaller in the middle zone than in the other three zones (anterior 5.3 ± 0.8 mm, middle 1.4 ± 0.4 mm, popliteal hiatus 6.1 ± 1.0 mm, and posterior 5.6 ± 1.5 mm, p < 0.05). In the superoinferior position, the height of the ILGA was 3.4 ± 0.9 mm in the anterior zone, 0.4 ± 1.3 mm in the middle zone, - 1.9 ± 1.8 mm in the popliteal hiatus zone, and - 1.3 ± 4.3 mm in the posterior zone. When the LM bottom is the base, the ILGA was located superiorly in the anterior zone, close to the base in the middle zone, and inferiorly in the popliteal hiatus zone. CONCLUSIONS: To avoid ILGA injury, close attention is necessary during surgical procedures involving the meniscocapsular junction of the LM, especially at the meniscal base in the middle zone.
PURPOSE: The inferior lateral genicular artery (ILGA) passes around the lateral knee joint, adjacent to the lateral meniscus (LM). ILGA injuries in total knee arthroplasty or arthroscopic surgery can result in recurrent hemarthrosis or painful pseudoaneurysms. Detailed information about the perimeniscal position of the ILGA relative to the LM is necessary to avoid these complications. METHODS: 3-T MR images of 100 knees (mean age 36.3 ± 11.2 years) were retrospectively reviewed. The perimeniscal area was divided into four regions: the anterior, middle, popliteal hiatus, and posterior zones. In each zone, the ILGA diameter, superoinferior position (assessed as the height of the ILGA from the LM base), and distance between the meniscocapsular junction and the ILGA were measured. RESULTS: The distance between the ILGA and meniscocapsular junction was significantly smaller in the middle zone than in the other three zones (anterior 5.3 ± 0.8 mm, middle 1.4 ± 0.4 mm, popliteal hiatus 6.1 ± 1.0 mm, and posterior 5.6 ± 1.5 mm, p < 0.05). In the superoinferior position, the height of the ILGA was 3.4 ± 0.9 mm in the anterior zone, 0.4 ± 1.3 mm in the middle zone, - 1.9 ± 1.8 mm in the popliteal hiatus zone, and - 1.3 ± 4.3 mm in the posterior zone. When the LM bottom is the base, the ILGA was located superiorly in the anterior zone, close to the base in the middle zone, and inferiorly in the popliteal hiatus zone. CONCLUSIONS: To avoid ILGA injury, close attention is necessary during surgical procedures involving the meniscocapsular junction of the LM, especially at the meniscal base in the middle zone.
Entities:
Keywords:
Anatomy; Lateral inferior genicular artery; Magnetic resonance imaging; Perimeniscal position
Authors: Edmar Stieven Filho; Guilherme Rufini Isolani; Filipe Ribas Baracho; Ana Paula Gebert de Oliveira Franco; Luiz Antônio Ridder Bauer; Mario Namba Journal: Rev Bras Ortop Date: 2015-03-16