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· DOS Abstracts
Comparison of outcomes and complications of hip
arthroscopy for mixed hip disorders in adolescents
versus adults: a prospective cohort study
Manoj Ramachandran, Pramod Achan , Martin Gottliebsen , Bjarne Møller-
Madsen
Department of Paediatric Orthopaedics, Barts and The London Children’s
Hospital, Whitechapel Road, Whitechapel, London, England ; Department of
Children’s Orthopaedics, Aarhus University Hospital
Background:
The current literature indicates that hip arthroscopy is safe in
both adolescents and adults with good early outcomes. There are no available
studies however that directly compare the outcomes of this procedure for
mixed indications between these two groups.
Purpose / Aim of Study:
This was a prospective cohort study of 102 con-
secutive supine hip arthroscopies in 96 patients (48 adolescent (<18) hips,
mean age 13.9 years and 54 adult (>18 hips), mean age 33.8 years) at a ter-
tiary referral paediatric and adult university hospital followed-up for a minimum
of two years.
Materials and Methods:
At two-year follow-up, the Modified Harris Hip
Score improved from a mean of 55.3 to 87.5 (p<0.05) in the adolescent group
and from 58.7 to 86.9 (p<0.05) in the adult group while the Non-Arthritic
Hip Score improved from 57.1 to 86.7 (p<0.05) in the adolescent group and
from 61.4 to 87.4 (p<0.05) in the adult group. There was no statistical signifi-
cance difference in outcome between the two groups at 2 years. With respect
to complications, there were 3 transient pudendal nerve palsies that resolved
spontaneously in the adolescent group by 4 weeks. No cases of proximal femo-
ral physeal growth disturbance or osteonecrosis were seen at final follow-up.
Findings / Results:
This study confirms that hip arthroscopy for mixed indica-
tions leads to good early outcomes with low complication rates in adolescent
and adult patients. The incidence of pudendal nerve palsy in the adolescent
group is however noted and is of concern. Advances in hip arthroscopy for ado-
lescent hip disorders should focus on reducing or eliminating the side effects
of traction.
Conclusions:
Hip arthroscopy, although effective in adolescents and adults in
the short-term for mixed indications, has a higher incidence of pudendal nerve
palsy in adolescents.
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