                                                                                                        Cephalexin 35 days                                                           

  4             54          Male     None           Negative       Fever, chills, thigh pain            Sacroiliitis Osteomyelitis Psoas abscess   Pus culture of percutaneous drainage         Negative     Percutaneous   Cefmetazole IV 4 days\         8                            Cure      2017   Presentcase
                                                                                                                                                                                                                            Ampicillin IV 21 days\                                                       
                                                                                                                                                                                                                            Oral levofloxacin 31 days                                                    
  ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------------

**Abbreviations:** HIV, human immunodeficiency virus; IV, intravenous; yrs, years.


Introduction {#Sec1}
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The protein-based silk fibres, produced by spiders and silkworms, have fascinated humans for many years due to their excellent mechanical properties; diverse applications in textiles, optics, and biomedicine; and their biocompatibility and biodegradability^[@CR1],[@CR2]^. Spiders can produce up to seven types of silks or glues that are used for various purposes. The diverse uses of spider silks derive from their excellent physical properties, which are tailored for specific purposes, resulting in diverse of mechanic