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DOS Kongressen 2016 ·
175
Effect of preoperative Explosive-type Resistance
Training on Patients with Hip Osteoarthritis after
Total Hip Arthroplasty – a randomized controlled
trial
Andreas EB Hermann, Anders Holsgaard-Larsen, Bo Zerahn, Steen Mejdahl,
Søren Overgaard
Department of Orthopedic Surgery, Herlev University Hospital; Orthopedic Research
Unit, Department of Orthopaedic Surgery and Traumatology, Odense University Hospital;
Department of Clinical Physiology and Nuclear Medicine, Herlev University Hospital;
Department of Orthopedic Surgery, Herlev University Hospital; Orthopedic Research
Unit, Department of Orthopaedic Surgery and Traumatology, Odense University Hospital
Background:
Progressive explosive-type resistance training (RT) improves physical
function and muscle strength in hip OA patients prior to THA. The potential postopera-
tive effect following THA of preoperative RT has not previously been reported
Purpose / Aim of Study:
To investigate the postoperative effect of preoperative RT in
hip OA patients scheduled for THA on i) self-reported outcomes and ii) muscle strength
and physical function
Materials and Methods:
Eighty patients (age 70.4 ± 7.6 years, 70% females (n=52))
diagnosed with hip OA and scheduled for primary THA were randomized into two groups:
1) The intervention group (IG) received RT (4 exercises of 3 series each (~80% of 1
repetition max)) twice a week for 10 weeks prior to surgery 2) The control group (CG)
received ‘care as usual’. Primary endpoint was Hip Osteoarthritis Outcome Score (HOOS)
ADL (12 months), Secondary; other HOOS subscales, muscle strength and function
(gait speed, stair-climb, sit-to- stand). Between group changes at follow-up (3 and 12
months) were analyzed using mixed model analysis.
Findings / Results:
For all HOOS subscales (including ADL), functional tests (except
stair climb; p<0.017) and muscle strength no between group differences were observed
at 12 months At 3 months statistical significant between-group difference in HOOS
‘Sport/Rec’ was observed, where IG scored 10.5 points 95%CI [1.4;19.6] higher com-
pared to CG. Furthermore, IG had higher muscle strength (knee extension; p<0.001) and
better function (p<0.02) compared to CG
Conclusions:
Preoperative RT does not affect one year postoperative ADL function.
Between group differences in secondary outcomes at 3 month indicate that preoperative
RT may accelerate postoperative recovery of strenuous activities during early rehabilita-
tion. More strength requiring functions as stair climbing may benefit of RT in the longer
term
No conflicts of interest reported
126.