Heterotopic ossification in patients with hip osteoarthritis below forty years old after total hip replacement.
BACKGROUND
Even though heterotopic ossification (HO) is most often asymptomatic in patients after total hip replacement (THR), it remains a serious problem in orthopaedics as it is observed in nearly all operated patients.


METHODS
The article presents a pre- and post-operative retrospective analysis of heterotopic ossification based on radiographic evidence. The study involved 77 patients below forty years old who underwent THR due to degenerative changes. Heterotopic ossification was evaluated using Brooker's basic four-grade scale.


RESULTS
Heterotopic ossification was diagnosed more often in women. The study confirmed once again that non-steroidal anti-inflammatory drug (NSAID) prophylaxis reduces the risk of ossification. We propose that the hydroxyapatite coating of implants may also contribute to a higher incidence of heterotopic ossification in operated patients.


CONCLUSIONS
A history of surgical procedures and a lack of NSAID prophylaxis contributed to heterotopic ossification in the region of the replaced hip joint in the study group.
Koczy
Bogdan
B
Dr J. Daab Regional Independent Public Hospital of Trauma Surgery, Piekary Slaskie, Poland.
Stołtny
Tomasz
T
Swiderski
Michał
M
Pyda
Michał
M
Pajak
Jan
J
Spindel
Jerzy
J
Wawrzynek
Wojciech
W
Miszczyk
Leszek
L
Kasperczyk
Sławomir
S
Widuchowski
Jerzy
J
D000328:Adult; D000894:Anti-Inflammatory Agents, Non-Steroidal / Q000627:therapeutic use; D019644:Arthroplasty, Replacement, Hip / Q000706:statistics & numerical data*; D015984:Causality; D020099:Coated Materials, Biocompatible; D015897:Comorbidity; D005260:Female; D006618:Hip Dislocation, Congenital / Q000453:epidemiology; D006801:Humans; D015994:Incidence; D008297:Male; D009999:Ossification, Heterotopic / Q000000981:diagnostic imaging* / Q000453:epidemiology* / Q000517:prevention & control; D015207:Osteoarthritis, Hip / Q000453:epidemiology* / Q000601:surgery*; D011182:Postoperative Care / Q000706:statistics & numerical data; D011859:Radiography; D012086:Reoperation; D012189:Retrospective Studies; D017678:Sex Distribution; D055815:Young Adult
D000894:Anti-Inflammatory Agents, Non-Steroidal; D020099:Coated Materials, Biocompatible