title: Return to sports activity with short stems or standard stems in total hip arthroplasty in patients less than 50 years old.
abstract: BACKGROUND
  The aim of this study was to compare return to sport activity between a short femoral cementless stem and a conventional femoral cementless stem in total hip arthroplasty in patients 50 years old and younger.
  
  
  METHODS
  We retrospectively reviewed 55 patients (61 hips) treated with a short femoral cementless stem and 28 patients (32 hips) treated with a conventional femoral cementless stem 50 years old and younger from December 2009 and December 2014.Their mean age was 39.86 (22-49) years and 38.68 (18-49) years, respectively. The mean follow-up was 54.1 (15-68) months and 52.7 (15-72) months, respectively. They were pre- and postoperatively evaluated by the clinical and radiological examination.
  
  
  RESULTS
  No patients with the short stem had intraoperative fracture, but 1 patient with the conventional stem had intraoperative fracture. At final follow-up, there was no statistically significant difference in Harris Hip Score, and radiographic review level between 2 stems. No hip with the short stem had thigh pain, but 6 hips with the conventional stem had thigh pain at the final follow-up. No component was revised for aseptic loosening in either group. There were no differences observed in the return to sports activity between the 2 groups.
  
  
  CONCLUSIONS
  Our study demonstrated that both short cementless stem and conventional cementless stem provided stable fixation and achieved a satisfactory result in patients 50 years old and younger. There is no difference in return to sports activity level after the procedure.
authors.affiliation: Conservative Orthopaedic Surgery and Innovative Techniques, Rizzoli Orthopaedic Institute, Bologna - Italy.
authors.forename: Nicolandrea
authors.initials: N
authors.lastname: Del Piccolo
authors.affiliation: Conservative Orthopaedic Surgery and Innovative Techniques, Rizzoli Orthopaedic Institute, Bologna - Italy.
authors.forename: Chiara
authors.initials: C
authors.lastname: Carubbi
authors.affiliation: Conservative Orthopaedic Surgery and Innovative Techniques, Rizzoli Orthopaedic Institute, Bologna - Italy.
authors.forename: Alessandro
authors.initials: A
authors.lastname: Mazzotta
authors.affiliation: Conservative Orthopaedic Surgery and Innovative Techniques, Rizzoli Orthopaedic Institute, Bologna - Italy.
authors.forename: Giacomo
authors.initials: G
authors.lastname: Sabbioni
authors.affiliation: Conservative Orthopaedic Surgery and Innovative Techniques, Rizzoli Orthopaedic Institute, Bologna - Italy.
authors.forename: Mattia
authors.initials: M
authors.lastname: Filanti
authors.affiliation: Conservative Orthopaedic Surgery and Innovative Techniques, Rizzoli Orthopaedic Institute, Bologna - Italy.
authors.forename: Cesare
authors.initials: C
authors.lastname: Stagni
authors.affiliation: Conservative Orthopaedic Surgery and Innovative Techniques, Rizzoli Orthopaedic Institute, Bologna - Italy.
authors.forename: Dante
authors.initials: D
authors.lastname: Dallari
mesh_terms: D000328:Adult; D000367:Age Factors; D019644:Arthroplasty, Replacement, Hip / Q000379:methods*; D001843:Bone Cements; D016009:Chi-Square Distribution; D015331:Cohort Studies; D005260:Female; D005500:Follow-Up Studies; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D010147:Pain Measurement; D011474:Prosthesis Design / Q000379:methods*; D016059:Range of Motion, Articular / Q000502:physiology*; D020127:Recovery of Function; D012189:Retrospective Studies; D000068958:Return to Sport / Q000706:statistics & numerical data*; D018570:Risk Assessment; D013997:Time Factors; D016896:Treatment Outcome; D055815:Young Adult
chemical_list: D001843:Bone Cements