314.Acute patellar dislocation-relocation (PDR)（part2）

每天朗读一段医学影像学英语文章

DISCUSSION:

Radiographs may show a lipohemarthrosis or a chip fracture adjacent to the donor site of the medial facet of the patella.

MR findings associated with PDR include any or all of the following: disruption or sprain of the medial retinaculum, lateral patellar tilt or subluxation, lateral femoral condylar and medial patellar osseous contusions, osteochondral injury to the medial patella or lateral femur, intraarticular sliver-like osseous fragment, damage to Hoffa’s fat pad, and joint effusion or lipohemarthrosis .

MR imaging is recommended for all patients with PDR since they often have concomitant injury to the major ligaments of the knee or the menisci .

Redislocation occurs in up to 63% of patients, and more than one-half of these untreated patients will have fair to poor outcomes.

Surgical repair versus closed management is tailored to the patient’s clinical situation .

Notes:

1. lipohemarthrosis /lɪpəhemɑ:'θroʊsɪs/ n. 关节积脂血病

2. patella /pə'tɛlə/ n. 髌骨

3. sprain /spren/ vt.n. 扭伤

4. retinaculum /ˌrɛtə'nækjələm/ n. 支持带,韧带

5. patellar /pə'telə/ n. 髌骨的

6. tilt /tɪlt/ vi. 倾斜 vt. 使倾斜 n. 倾斜

7. subluxation /ˌsʌblʌkˈseʃən/ n. 不全脱位,半脱位

8. condylar /'kɔndilə/ adj. 髁的

9. osseous /'ɑsɪəs/ adj. 骨的

10. osteochondral /ɒsti:oʊ'kɒndrəl/ 骨软骨的

11. intraarticular /ɪntrə'tɪkjʊlə/ intraarticular

12. menisci /mɪ'nɪkaɪ/ n. 半月板

Aunt Minnie’s Pearls

·Bone contusions of the medial patellar facet and lateral femoral condyle (i.e., “kissing contusions”) are seen with PDR.

·Meniscal or ligamentous injuries are often associated findings in PDR.

·Aggressive surgical repair is indicated to avoid chronic, repetitive dislocation and morbidity.

From：https://radiologykey.com/musculoskeletal-system-3/

来源：每天朗读一段医学影像学英语文章

圈主

深圳市人民医院放射科副主任医师杨敏洁

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