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Orthopaedic Proceedings
Vol. 105-B, Issue SUPP_12 | Pages 7 - 7
23 Jun 2023
van Hellemondt GG Faraj S de Windt T van Hooff M Spruit M
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Pelvic discontinuity (PD) is a detrimental complication following total hip arthroplasty (THA). The aim of this study was to assess the clinical and radiological results of patients with PD who were revised using a custom-made triflange acetabular component (CTAC).

This is a single centre prospective study of patients with PD following THA who were treated with a CTAC. The Hip Disability and Osteoarthritis Outcome Score (HOOS), modified Oxford Hip Score (mOHS), EurQol five-dimension three-level (EQ-5D-3L) utility, and Numeric Rating Scale (NRS), including visual analogue score (VAS) for pain, were gathered at baseline, and at one- and two-year follow-up. Clinical and radiological complications, including reasons for revisions were registered. Trends over time are described and tested for significance and clinical relevance.

18 females with 22 CTACs were included with a mean age of 73.5 years (SD 7.7). There were significant improvements between baseline and final follow-up in HOOS (p<0.01), mOHS (p<0.01), EQ-5D-3L utility (p<0.01), EQ-5D-3L NRS (p<0.01), VAS pain rest (p<0.01), and VAS pain activity (p<0.01). A minimal clinically important improvement in mOHS and the HOOS was observed in 16 patients (73%) and 14 patients (64%), respectively. Definite healing of the PD was observed in 19 hips (86%). Complications included six cases with broken screws (27%), four cases (18%) with bony fractures, and one case (4.5%) with sciatic nerve paresthesia. One patient with concurrent bilateral PD had revision surgery due to recurrent dislocations. No revision surgery was performed for screw failure or implant breakage.

This is the first prospective assessment in clinical outcome of patients with PD who were treated with a CTAC. We have demonstrated that CTAC in patients with THA acetabular loosening and PD can result in stable constructs with no mechanical failures. Moreover, clinically relevant improvements in health-related quality of life at two years’ follow-up was observed.


Orthopaedic Proceedings
Vol. 101-B, Issue SUPP_9 | Pages 29 - 29
1 Sep 2019
van Hooff M Vriezekolk J Groot D O'Dowd J Spruit M
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Background and purpose

The Fear Avoidance Model is used to explain why some patients with acute low back pain develop chronic low back pain (CLBP). Cognitive behavioural therapy (CBT) targeting dysfunctional behavioural cognitions (pain catastrophizing and fear of movement) is recommended.

Purpose: to investigate whether a two-week CBT-based pain management program results in improvement in dysfunctional behavioural cognitions and whether these improved cognitions improve functional outcomes.

Methods and Results

Cohort study including 524 consecutive CLBP-patients. Main outcome: functioning (ODI). Secondary outcomes: pain severity (NRS), pain catastrophizing (PCS), fear of movement (TSK). Assessments: pre- and post-treatment, 1 and 12-months follow-up (FU). Improvement over time was analysed with repeated measures ANOVA. Path analyses were used to examine the influence of pain catastrophizing and fear of movement on functional disability and pain severity. Multiple imputation was used to complete missing data.

Participants with incomplete data (12.8%) did not differ from those with complete data (n= 457). 59% were females, mean age 46 (± 9.5) years, mean CLBP-duration 12 (± 10.8) years. All outcomes significantly improved at post-treatment and a slight significant improvement between post-treatment and 12 months FU was observed. Path analyses showed a direct effect for catastrophizing on post-treatment functioning and an indirect effect for catastrophizing through fear of movement on post-treatment functioning. Comparable results with pain severity as outcome.


Orthopaedic Proceedings
Vol. 98-B, Issue SUPP_6 | Pages 28 - 28
1 Feb 2016
van Hooff M O'Dowd J van Loon J Spruit M
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Background:

Combined physical and psychological (CPP) programmes are widely recommended for Chronic Low Back Pain (CLBP) patients. Patients with longstanding CLBP participating in a two-week CPP-programme improve in functional status and quality of life and the results are maintained for at least one year. First indications of maintenance of improved patient-reported outcomes are shown at two-year follow-up assessment.

Purpose:

Evaluation of the long-term (at least five years of follow up) maintenance of positive results of a short, intensive, evidence based CPP-programme.


Orthopaedic Proceedings
Vol. 96-B, Issue SUPP_4 | Pages 29 - 29
1 Feb 2014
van Hooff M O'Dowd J Spruit M de Kleuver M Fairbank J van Limbeek J
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Background

Combined physical and psychological (CPP) programmes are widely recommended for Chronic Low Back Pain (CLBP) patients, but not often implemented. Patients with longstanding CLBP participating in a two-week CPP programme improve in functional status and quality of life and this is maintained at two-year follow up. One-year follow-up data is available of 955 participants.

Purpose:

Evaluation of one-year follow-up outcomes of a large cohort (n=848) compared to previously published results of the first 107 patients.


Orthopaedic Proceedings
Vol. 93-B, Issue SUPP_IV | Pages 489 - 489
1 Nov 2011
van Hooff M O’Dowd J Pither C de Kleuver M Pavlov P van Limbeek J
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Purpose: The long term effects of treatment in a cohort of patients with chronic low back pain (CLBP) participating in an intensive pain management program.

Background: Cognitive behavioral treatments produce clinically relevant benefits for patients with CLBP.

Methods: The program provided by RealHealth-Netherlands is based on cognitive behavioral principles and executed in collaboration with orthopedic surgeons. Primary outcomes were daily functioning and self-efficacy. Measurements were at baseline, last day of residential program and at 1 and 12 months follow-up. A GLM procedure with repeated measures was applied to examine changes over time and to explore possible unwanted side effects. Effect sizes are analyzed using cohen’s d. Clinical relevance was examined using minimal clinical important differences (MCID) estimates for primary outcomes and quality of life. To compare results with literature Standardized Morbidity Ratios (SMR) were determined.

Results: 107 patients with CLBP participated. Mean scores on primary and secondary outcomes showed a similar pattern: improvement immediately after following the program and maintenance of results over time. Effect sizes were 0.9 for functioning and 0.8 for self-efficacy. Clinical relevancy: 79% reached MCID on functioning, 53% on self-efficacy and 80% on quality of life. Found study results were 36% better and 2% worse when related to previous research on respectively rehabilitation programs and spinal surgery for similar conditions (SMR 136% and 98%respectively).

Conclusion: The participants of this evidence based program learned to manage CLBP, improved in daily functioning and quality of life. The study results are comparable with results of spinal surgery and even better than results from less intensive rehabilitation programs.

Conflict of Interest: None

Sources of Funding: None