HighlightsImplant hypersensitivity may manifest as a rare systemic dermatitis reaction.Hypoallergenic implant revision is the gold standard in treating most hypersensitivity cases.Delayed implant removal may be considered if its stability is not compromised.Intermittent, low dose steroid is preferable to control the cutaneous lesion in long term regiment.History of metal allergy should be obtained before choosing the appropriate implant.

HighlightsGluteal abscess and sacral tuberculosis are rare entities in spine tuberculosis, as to our knowledge; this is the second case report about it.MRI has a great role to describe anatomical pathophysiology of the abscess dissemination from sacral tuberculosis.Sacral tuberculosis should be made as the main differential diagnosis for atypical sacral lesion that occurs with submuscular gluteal abscess.

Introduction: Prosthetic joint infection (PJI) is a serious complication especially following arthroplasty surgeries. The outcome of these cases is affected by the pattern of infection, causative microorganism, and antibiotic resistance. This study was aimed to evaluate the prevalence of PJI, distribution of causative microorganism, antibiotic resistance, and risk factor profiling.Methods: A retrospective review was performed by arthroplasty registry evaluation from 2008-2018, followed by a medical record review and patient interview. Distribution of causative microorganisms, antibiotic resistance patterns, and the onset of infection was extracted. Risk factor evaluation was performed by assessing preoperative (age, body mass index (BMI), frailty index) and perioperative parameters (duration of surgery, number of previous surgeries, the interval between those surgeries). Results: Seventeen patients were diagnosed with PJI (13 hip and 4 knees), with a prevalence of 1.56% and 1.77% respectively. The most common causative organism was Staphylococcus aureus and Escherichia coli with multiple antibiotic resistance patterns. These infections mostly occurred in patients with the age of 40-60 years, BMI 30kg/m2, and pre-operative frailty index of 4. The perioperative risk factor was the duration of surgery for more than 3 hours, have undergone more than 3 surgeries with an average surgical interval of 2 months.Conclusions: The prevalence of PJI in this series was 1.56% in hip and 1.77% in the knee. The risk factor profile showed that most cases have high BMI, prolonged duration of surgery, and a high number of previous surgeries within a short interval.

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Aims The aim of this study was to perform a cross-cultural adaptation of Oxford Hip Score (OHS) to Indonesian, and to evaluate its psychometric properties. Methods We performed a cross-cultural adaptation of Oxford Hip Score into Indonesian language (OHS-ID) and determined its internal consistency, test-retest reliability, measurement error, floor-ceiling effect, responsiveness, and construct validity by hypotheses testing of its correlation with Harris Hip Score (HHS), vsual analogue scale (VAS), and Short Form-36 (SF-36). Adults (> 17 years old) with chronic hip pain (osteoarthritis or osteonecrosis) were included. Results A total of 125 patients were included, including 50 total hip arthroplasty (THA) patients with six months follow-up. The OHS questionnaire was translated into Indonesian and showed good internal consistency (Cronbach’s alpha = 0.89) and good reliability (intraclass correlation = 0.98). The standard error of measurement value of 2.11 resulted in minimal detectable change score of 5.8. Ten out of ten (100%) a priori hypotheses were met, confirming the construct validity. A strong correlation was found with two subscales of SF-36 (pain and physical function), HHS (0.94), and VAS (-0.83). OHS-ID also showed good responsiveness for post-THA series. Floor and ceiling effect was not found. Conclusion The Indonesian version of OHS showed similar reliability and validity with the original OHS. This questionnaire will be suitable to assess chronic hip pain in Indonesian-speaking patients. Cite this article: Bone Jt Open 2021;2(9):765–772.