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· DOS Abstracts
Knee and back pain in patients with symptomatic
femoroacetabular impingement before and after hip
arthroscopy
Signe Kierkegaard, Bent Lund, Kjeld Søballe, Ulrik Dalgas, Inger Mechlenburg
Department of Orthopaedic Surgery, Horsens Hospital; Department of
Orthopaedic Surgery, Horsens Hospital; Department of Orthopaedic Surgery,
Aarhus University Hospital; Section for Sport Science, Department of Public
Health, Aarhus University; Department of Orthopaedic Surgery, Aarhus
University Hospital
Background:
Patients with femoroacetabular impingement (FAI) undergoing
hip arthroscopy show reduced hip pain following surgery. However, it is, less well
documented how pain levels in the knee and the back are affected by surgery,
despite both joints could be affected by altered hip motion due to hip pain and
decreased hip range of motion.
Purpose / Aim of Study:
The aim of the study was, therefore, to investigate
hip, back and knee pain in patients with FAI before and after hip arthroscopy in a
consecutively included cohort.
Materials and Methods:
Sixty patients (age 36±9, 63% females) with FAI
scheduled for hip arthroscopic surgery at Horsens Hospital were included in the
study. On a 100-mm visual analog scale (VAS), patients scored their resting hip
pain, hip pain during activity, knee pain and back pain during the past 24 hours.
Patients scored their pain preoperatively, 3, 6 and 9 months postoperatively.
Time development in the scores was investigated with a mixed effects model.
Results are presented as medians and quartiles.
Findings / Results:
Back VAS pain was present before surgery (16 [5;49] mm)
and increased after surgery: 3 months: 15 [2;44] mm; 6 months: 25 [5;61]
mm; 9 months: 21 [4;55] mm (p = 0.04). Knee VAS pain was present before
surgery (19 [1;51] mm) and seemed to decrease over time, but this was not
significantly: 3 months: 5 [1;45] mm; 6 months: 4 [0;38] mm; 9 months: 2
[0;18] mm (p = 0.16). Preoperative resting hip pain was 19 [7;38] mm and
hip pain during activity was 37 [20;62] mm which both decreased significantly
after surgery (p < 0.001).
Conclusions:
Hip arthroscopy can alleviate hip pain in patients with FAI, but
some patients experience increased back pain after surgery and some knee pain.
To improve pain outcomes for the knee and back after surgery, the underlying
causes of pain need to be investigated.
No conflicts of interest reported
81.