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Arthritis Care Res (Hoboken). 2015 May;67(6):799-808. doi: 10.1002/acr.22474.

Body mass index and functional mobility outcome following early rehabilitation after a total knee replacement: a retrospective study in Taiwan.

Author information

1
Shuang Ho Hospital, Taipei Medical University, Taipei, Taiwan.
2
National Taipei University of Nursing and Health Sciences, Taipei, Taiwan.
3
Shuang Ho Hospital and Graduate Institute of Injury Prevention and Control, Taipei Medical University, Taipei, Taiwan.

Abstract

OBJECTIVE:

Obesity is associated with an increased risk of osteoarthritis, and the incidence of obese patients requiring a total knee replacement (TKR) has increased in recent years. A high body mass index (BMI) may influence post-TKR rehabilitation outcomes. We investigated the effects of obesity on functional mobility outcomes following post-TKR rehabilitation in Asian patients whose BMIs were not as high as those reported in similar studies performed in non-Asian countries.

METHODS:

A total of 113 patients were categorized as normal weight (n = 23), overweight (n = 32), class I obese (n = 31), or class II/III obese (n = 27). Patients were retrospectively followed up for 6 months after undergoing TKR followed by 2 months of active rehabilitation. Outcome measures were recorded at baseline and at the 2-month and 6-month followup assessments and included the Western Ontario and McMaster Universities Osteoarthritis Index and the following tests: functional reach, single-leg stance, ten-meter walk, timed up and go, chair rise, and stair climbing.

RESULTS:

A 4 × 3 (group × time) repeated-measures analysis of variance showed significant improvement in all of the outcome measures for all of the BMI groups at the 2-month and 6-month followup assessments (P < 0.05 for all). No significant intergroup differences at the 2-month and 6-month followup assessments were observed for any of the mobility measures except the functional reach and single-leg stance (P < 0.05).

CONCLUSION:

Patients with class II/III obesity benefit from early post-TKR outpatient rehabilitation and respond as well as patients with lower BMIs.

PMID:
25201765
DOI:
10.1002/acr.22474
[Indexed for MEDLINE]
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