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Hip Int. 2018 May;28(3):259-265. doi: 10.5301/hipint.5000572. Epub 2017 Nov 21.

3-phase Technicium-99m bone scanning in patients with pain in the hip region after cemented total hip replacement: a multicentre series of 100 cases.

Author information

1
1 Trauma and Orthopaedics Department, Princess Elizabeth Orthopaedic Centre, Royal Devon and Exeter Foundation Trust, Exeter - UK.
2
2 Research Design Service (RDS) South West, Exeter - UK.
3
3 Radiology Department, Princess Elizabeth Orthopaedic Centre, Royal Devon and Exeter Foundation Trust, Exeter - UK.

Abstract

INTRODUCTION:

The aim of this study was to assess the benefit of a Technetium-99M (HDP) 3-phase bone scan (TPBS) as an additional diagnostic test in the evaluation of pain in the hip region following cemented total hip replacement (THR) surgery.

METHODS:

A retrospective study over a 24-month period was performed comprising 100 patients investigated with a TPBS. Investigations were summarised and analysed, and were classified as entirely normal, possibly abnormal, and definitely abnormal.

RESULTS:

45% (45) of TPBSs were reported as being entirely normal, 50% (50) as possibly abnormal, and 5% (5) as definitely abnormal. During the 24-month study period 230 revision THR procedures were performed at our institution; 10% (24) were investigated with TPBS and 90% (206) were not. 29% (7/24) of patients investigated with a TPBS that subsequently underwent revision THR surgery had an entirely normal preoperative TPBS. 84% (38) with an abnormal TPBS were managed conservatively. A TPBS had a sensitivity of 29% (95% confidence interval (CI), 13%-51%) and a specificity of 50% (95% CI, 38%-62%) in the detection of infection, or loosening with concurrent infection.

CONCLUSION:

A TPBS should only be considered following clinical evaluation, serological investigation, diagnostic imaging and microbiological analysis of fluid obtained from arthrocentesis by a specialist revision arthroplasty surgeon. A TPBS may be useful in the situation where abnormal serology is present, but where repeated joint aspirations samples are inconclusive.

KEYWORDS:

Cemented total hip replacement; Pain in the hip region; Revision arthroplasty; Three-phase Technicium-99m bone scan

PMID:
29192730
DOI:
10.5301/hipint.5000572

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