title: Incidence, location and classification of glenoid labrum meniscoid folds.
abstract: BACKGROUND
  The purpose of the present study was to arthroscopically investigate the incidence and location of labral meniscoid folds of the shoulder joint, as well as to classify them into types and detect any possible correlation with gender, side and age of patients.
  
  
  METHODS
  The shoulder joint of 59 patients who underwent arthroscopic surgery for different reasons was examined for meniscoid folds. We classified all meniscoid folds into slim or thick and large or small. The location and area of labral folds were assessed according to o'clock position and were defined by the center of the fold.
  
  
  RESULTS
  The incidence of labral meniscoid folds in shoulder joint was 62.7 %. Meniscoid folds were more frequently found at 2-o'clock position in right shoulders and at 10-o'clock position in left shoulders. Most of them were located in anterior and superior rim of labrum. Statistically significant difference (p = 0.018) was only detected between location of meniscoid folds and gender. In male patients meniscoid folds were mostly located in a more anterior position than women, whose meniscoid folds were found more superiorly. Older patients presented a higher rate of meniscoid folds.
  
  
  CONCLUSIONS
  Meniscoid folds are quite common in shoulder joint. Labral meniscoid folds are located more often at an anterosuperior position of shoulder joints and their incidence tends to be higher in older patients, while in male ones they are located in a more anterior position in comparison to female patients where they are located more superiorly.
authors.affiliation: Laboratory of Anatomy, School of Medicine, Aristotle University of Thessaloniki, P.O. Box 300, 54124, Thessaloniki, Greece.|Interbalkan Medical Center, Thessaloniki, Greece.
authors.forename: Konstantinos
authors.initials: K
authors.lastname: Natsis
authors.affiliation: Laboratory of Anatomy, School of Medicine, Aristotle University of Thessaloniki, P.O. Box 300, 54124, Thessaloniki, Greece. konstantigeo@yahoo.com.|Interbalkan Medical Center, Thessaloniki, Greece. konstantigeo@yahoo.com.
authors.forename: Georgios A
authors.initials: GA
authors.lastname: Konstantinidis
authors.affiliation: Interbalkan Medical Center, Thessaloniki, Greece.
authors.forename: Ulf G
authors.initials: UG
authors.lastname: Moebius
authors.affiliation: Laboratory of Anatomy, School of Medicine, Aristotle University of Thessaloniki, P.O. Box 300, 54124, Thessaloniki, Greece.|Interbalkan Medical Center, Thessaloniki, Greece.
authors.forename: Nikolaos
authors.initials: N
authors.lastname: Anastasopoulos
authors.affiliation: Laboratory of Anatomy, School of Medicine, Aristotle University of Thessaloniki, P.O. Box 300, 54124, Thessaloniki, Greece.
authors.forename: Trifon
authors.initials: T
authors.lastname: Totlis
mesh_terms: D000328:Adult; D000367:Age Factors; D000368:Aged; D001182:Arthroscopy; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012737:Sex Factors; D012785:Shoulder Joint / Q000033:anatomy & histology* / Q000601:surgery; D055815:Young Adult
keywords: Anatomic variation; Labral folds; Labum; Meniscoid folds