Table 5.

Breakdown of the details of the infection recurrence group

Case	Site	Aetiology	C-M Stage	Initial Surgery	Days to recurrence	Initial Microbiology	Recurrent microbiology	Presentation of recurrence	Subsequent intervention	Outcome
1	Ilium	Residual infection after Girdlestone excision arthroplasty	III A	Partial iliectomy	92	No growth	No growth	Recurrent sinus	Restarted antibiotics for 6 months	Well at final follow up
2	Ilium	T6 traumatic paraplegia with bilateral pelvic & femoral head osteomyelitis	III BL	Right Hemipelvectomy and excision of proximal femur	193	Enterococcus, E. coli & Proteus mirabilis	Enterococci	Recurrent ulceration	Excision bilateral ischial pressure sores and cover with bilateral posterior thigh flaps. Defunctioning stoma to aid perineal wound healing	Well at final follow up
3	Ischium	Perineal sinus and purulent anal discharge Prostate cancer treated with radical cystoproctectomy, ileal conduit. Lat dorsi reconstruction and radiotherapy	III BL	Partial excision of ischium and pubic ramus	209	Streptococcus milleri & CoNS	E.coli, CoNS, Pseudomonas (resistant to ciprofloxacin)	Discharge from pubic symphysis region and scrotal swelling	Excision of osteomyelitis from right and left ischium, drainage of pelvic abscess in left hemipelvis, bilateral local gracilis flap	Well at final follow up
4	Ischium	Paraplegia following spinal desmoid tumour excision with pressure sore Diabetes	II BLS	Partial ischiectomy and posterior thigh fasciocutaneous flap	301	Corynebacterium spp & Staphylococcus lugdenesis	No growth	Sinus developed in labia majora. MRI showed communication with ischium	Ischiectomy and hamstring advancement	Well at final follow up
5	Ischium	T10 traumatic paraplegia with sacral and ischial pressure sores	II BLS		539	No growth	No growth	Developed bilateral pressure sores	Required staged excision of the proximal femur bilaterally with local muscle flap	No recurrence at operative site but has developed infection in L5 fusion instrumentation. Now requiring removal of instrumentation
6	Hemipelvectomy	Spina bifida with sacral and ischial pressure ulcers Urostomy	IV BLS	Hemipelvectomy	575	Diphtheroids	Not available	Recurrent sinus over right hip. Large inflammatory mass over iliac remnant. Not excised due to technical challenge of reoperation	Treated with long-term antimicrobial course. Had soft tissue excision of sinus 2 years after index procedure and did well thereafter	Died of Hodgkin's lymphoma
7	Ischium	Traumatic paraplegia with pressure sore Ankylosing Spondylitis and Crohn's disease	II BLS	Partial ischiectomy	1917	CoNS, Coliforms & Enterococci	No growth	Recurrent sinus	Ischiectomy and glut max rotational flap	Well at final follow up