Related Experiment Video
Updated: Jun 5, 2026
In Vivo Quantification of Hip Arthrokinematics during Dynamic Weight-bearing Activities using Dual Fluoroscopy
Published on: July 2, 2021
The ten-year pattern of hip diseases in Singapore
Gurpal Singh1, Lingaraj Krishna, Shamal Das De
1Department of Orthopedic Surgery, National University Hospital, Singapore. gurpal_singh@nuhs.edu.sg
Purpose:
To review patients with hip diseases undergoing total hip arthroplasty (THA) during 2 different periods.
Methods:
During the periods 1994 to 1996 and 2004 to 2006, 12 men and 28 women (mean age, 57 years) and 55 men and 78 women (mean age, 62 years) underwent THA for hip diseases, respectively. The aetiologies of the hip diseases were classified. Preand post-operative radiographs of the pelvis and hip were reviewed. The femoral head-tilt ratio (FHR) was measured.
Results:
The number of patients undergoing THA increased 3-fold over 10 years; the proportion of different aetiologies was similar. Respectively, the most common aetiologies were acetabular dysplasia (33% vs. 40%) and avascular necrosis (33% vs. 42%). Only less than 5% of the patients had advanced osteoarthritis with no demonstrable cause, most of whom being Caucasians. The overall mean FHR was 1.07. There was no significant difference between male and female subjects.
Conclusion:
The pattern of hip diseases in Singapore remained similar over the 10-year interval, but the number of patients undergoing THA had increased 3-fold.
Related Concept Videos
01:28Infectious Diseases and Their Occurrence
01:23Rheumatic Heart Disease I: Introduction
01:09Changes in the Appendicular Skeleton with Age
Initially, the limb buds consist of a core of mesenchyme covered by a layer of ectoderm. The ectoderm at the end of the limb bud thickens to form a narrow crest called the apical ectodermal ridge. This ridge stimulates the underlying...
02:20Longitudinal Research