Limits...
Prevalence of Osteochondritis Dissecans of the Capitellum in Young Baseball Players: Results Based on Ultrasonographic Findings.

Matsuura T, Suzue N, Iwame T, Nishio S, Sairyo K - Orthop J Sports Med (2014)

Bottom Line: Radiographic and ultrasonographic findings were then compared.Of them, 22 (66.7%) were found to have OCD of the capitellum on radiographs, giving an overall prevalence of 2.1%.Analysis of OCD by age and player position revealed no significant differences.

View Article: PubMed Central - PubMed

Affiliation: Department of Orthopedics, Institute of Health Bioscience, University of Tokushima Graduate School, Tokushima, Japan.

ABSTRACT

Background: Osteochondritis dissecans (OCD) of the capitellum is a well-recognized cause of elbow pain and disability in adolescent athletes. However, little is known about the prevalence of OCD in adolescent baseball players.

Purpose: To determine the prevalence of OCD in baseball players aged 10 to 12 years based on ultrasonographic findings and to investigate the clinical characteristics of those with OCD lesions.

Study design: Descriptive epidemiology study.

Methods: A total of 1040 players aged 10 to 12 years completed a questionnaire, ultrasound imaging, and radiographic examination to investigate OCD. Sonographic findings were classified into 5 grades (0, 1a, 1b, 2, and 3). Subjects with grade 1a, 1b, 2, or 3 were considered to have abnormal findings of the capitellum and were advised to undergo radiography. Radiographic and ultrasonographic findings were then compared. The prevalence of OCD was calculated, and differences by age and player position were determined.

Results: Of the 1040 players, 33 (3.2%) had an abnormal finding on initial ultrasonography screening, and all 33 agreed to undergo radiography. Of them, 22 (66.7%) were found to have OCD of the capitellum on radiographs, giving an overall prevalence of 2.1%. Seven subjects (31.8%) had no history of elbow pain. Based on the radiographic classification, 20 subjects (90.9%) had stage I lesions. Analysis of OCD by age and player position revealed no significant differences.

Conclusion: The prevalence of OCD of the capitellum was 2.1% in 1000 baseball players aged 10 to 12 years, with no differences in prevalence according to age or player position.

No MeSH data available.


Related in: MedlinePlus

Sonographic classification of osteochondritis dissecans of the capitellum. (A) Grade 0 is normal, (B) grade 1a shows an irregular surface on the subchondral bone, (C) grade 1b shows a cystic lesion on the subchondral bone surface, (D) grade 2 shows irregularity of the subchondral bone, and (E) grade 3 shows discontinuity of the subchondral bone.
© Copyright Policy - creative-commons
Related In: Results  -  Collection

License 1 - License 2 - License 3
getmorefigures.php?uid=PMC4555579&req=5

fig1-2325967114545298: Sonographic classification of osteochondritis dissecans of the capitellum. (A) Grade 0 is normal, (B) grade 1a shows an irregular surface on the subchondral bone, (C) grade 1b shows a cystic lesion on the subchondral bone surface, (D) grade 2 shows irregularity of the subchondral bone, and (E) grade 3 shows discontinuity of the subchondral bone.

Mentions: Both elbows of each subject were sonographically examined in the field. Ultrasonography of the lateral aspect of the elbow was performed by 2 of the authors (N.S., an orthopaedic surgeon, and S.N., an ultrasonography technician) using the following equipment: a FAZONE M sonography diagnostic imaging system (ZONARE Medical Systems Inc) with a 5- to 10-MHz linear array transducer (FAZONE CB; Fujifilm Corp), the MyLabFive portable ultrasound system (Esaote Europe BV) with a 6- to 18-MHz linear array transducer, and the M-Turbo ultrasound system (SonoSite Inc) with a 6- to 13-MHz linear array transducer. Anterior view images were taken with the subject seated and the elbow fully extended. Posterior view images were taken with the elbow fully flexed to obtain sufficient view of the anterior aspect of the capitellum. Sonographic findings were graded as follows according to a modification of the classification proposed by Ishizaki8: grade 0, normal (Figure 1A); grade 1a, irregular surface of subchondral bone (Figure 1B); grade 1b, a cystic lesion of the subchondral bone surface (Figure 1C); grade 2, irregularity of the subchondral bone (Figure 1D); and grade 3, discontinuity of the subchondral bone (Figure 1E). We defined grades 1a, 1b, 2, and 3 as abnormal findings of the capitellum. We then recommended radiographic examination to those subjects with abnormal ultrasonographic findings.


Prevalence of Osteochondritis Dissecans of the Capitellum in Young Baseball Players: Results Based on Ultrasonographic Findings.

Matsuura T, Suzue N, Iwame T, Nishio S, Sairyo K - Orthop J Sports Med (2014)

Sonographic classification of osteochondritis dissecans of the capitellum. (A) Grade 0 is normal, (B) grade 1a shows an irregular surface on the subchondral bone, (C) grade 1b shows a cystic lesion on the subchondral bone surface, (D) grade 2 shows irregularity of the subchondral bone, and (E) grade 3 shows discontinuity of the subchondral bone.
© Copyright Policy - creative-commons
Related In: Results  -  Collection

License 1 - License 2 - License 3
Show All Figures
getmorefigures.php?uid=PMC4555579&req=5

fig1-2325967114545298: Sonographic classification of osteochondritis dissecans of the capitellum. (A) Grade 0 is normal, (B) grade 1a shows an irregular surface on the subchondral bone, (C) grade 1b shows a cystic lesion on the subchondral bone surface, (D) grade 2 shows irregularity of the subchondral bone, and (E) grade 3 shows discontinuity of the subchondral bone.
Mentions: Both elbows of each subject were sonographically examined in the field. Ultrasonography of the lateral aspect of the elbow was performed by 2 of the authors (N.S., an orthopaedic surgeon, and S.N., an ultrasonography technician) using the following equipment: a FAZONE M sonography diagnostic imaging system (ZONARE Medical Systems Inc) with a 5- to 10-MHz linear array transducer (FAZONE CB; Fujifilm Corp), the MyLabFive portable ultrasound system (Esaote Europe BV) with a 6- to 18-MHz linear array transducer, and the M-Turbo ultrasound system (SonoSite Inc) with a 6- to 13-MHz linear array transducer. Anterior view images were taken with the subject seated and the elbow fully extended. Posterior view images were taken with the elbow fully flexed to obtain sufficient view of the anterior aspect of the capitellum. Sonographic findings were graded as follows according to a modification of the classification proposed by Ishizaki8: grade 0, normal (Figure 1A); grade 1a, irregular surface of subchondral bone (Figure 1B); grade 1b, a cystic lesion of the subchondral bone surface (Figure 1C); grade 2, irregularity of the subchondral bone (Figure 1D); and grade 3, discontinuity of the subchondral bone (Figure 1E). We defined grades 1a, 1b, 2, and 3 as abnormal findings of the capitellum. We then recommended radiographic examination to those subjects with abnormal ultrasonographic findings.

Bottom Line: Radiographic and ultrasonographic findings were then compared.Of them, 22 (66.7%) were found to have OCD of the capitellum on radiographs, giving an overall prevalence of 2.1%.Analysis of OCD by age and player position revealed no significant differences.

View Article: PubMed Central - PubMed

Affiliation: Department of Orthopedics, Institute of Health Bioscience, University of Tokushima Graduate School, Tokushima, Japan.

ABSTRACT

Background: Osteochondritis dissecans (OCD) of the capitellum is a well-recognized cause of elbow pain and disability in adolescent athletes. However, little is known about the prevalence of OCD in adolescent baseball players.

Purpose: To determine the prevalence of OCD in baseball players aged 10 to 12 years based on ultrasonographic findings and to investigate the clinical characteristics of those with OCD lesions.

Study design: Descriptive epidemiology study.

Methods: A total of 1040 players aged 10 to 12 years completed a questionnaire, ultrasound imaging, and radiographic examination to investigate OCD. Sonographic findings were classified into 5 grades (0, 1a, 1b, 2, and 3). Subjects with grade 1a, 1b, 2, or 3 were considered to have abnormal findings of the capitellum and were advised to undergo radiography. Radiographic and ultrasonographic findings were then compared. The prevalence of OCD was calculated, and differences by age and player position were determined.

Results: Of the 1040 players, 33 (3.2%) had an abnormal finding on initial ultrasonography screening, and all 33 agreed to undergo radiography. Of them, 22 (66.7%) were found to have OCD of the capitellum on radiographs, giving an overall prevalence of 2.1%. Seven subjects (31.8%) had no history of elbow pain. Based on the radiographic classification, 20 subjects (90.9%) had stage I lesions. Analysis of OCD by age and player position revealed no significant differences.

Conclusion: The prevalence of OCD of the capitellum was 2.1% in 1000 baseball players aged 10 to 12 years, with no differences in prevalence according to age or player position.

No MeSH data available.


Related in: MedlinePlus