title: Reconstruction of the hemipelvis with a modular prosthesis after resection of a primary malignant peri-acetabular tumour involving the sacroiliac joint.
abstract: We report our early experience with the use of a new prosthesis, the Modular Hemipelvic Prosthesis II, for reconstruction of the hemipelvis after resection of a primary malignant peri-acetabular tumour involving the sacroiliac joint. We retrospectively reviewed the outcome of 17 patients who had undergone resection of a pelvic tumour and reconstruction with this prosthesis between July 2002 and July 2010. One patient had a type I+II+III+IV resection (ilium + peri-acetabulum + pubis/ischium + sacrum) and 16 had a type I+II+IV resection (ilium + acetabulum + sacrum). The outcome was assessed at a mean follow-up of 33 months (15 to 59). One patient was alive with disease, 11 were alive without disease and five had died of disease. The overall five-year survival rate was 62.4%. Six patients had a local recurrence. The mean Musculoskeletal Tumour Society score was 58% (33 to 77). Deep infection occurred in two patients, problems with wound healing in five and dislocation in one. For patients with a primary malignant peri-acetabular sarcoma involving the sacroiliac joint, we believe that this new prosthesis is a viable option for reconstruction of the bony defect left following resection of the tumour. It results in a satisfactory functional outcome with an acceptable rate of complications.
authors.affiliation: People's Hospital, Peking University, Musculoskeletal Tumor Center, Beijing, 100044, China.
authors.forename: J
authors.initials: J
authors.lastname: Zang
authors.forename: W
authors.initials: W
authors.lastname: Guo
authors.forename: Y
authors.initials: Y
authors.lastname: Yang
authors.forename: L
authors.initials: L
authors.lastname: Xie
mesh_terms: D000077:Acetabulum / Q000473:pathology* / Q000601:surgery*; D000293:Adolescent; D000328:Adult; D000368:Aged; D001859:Bone Neoplasms / Q000473:pathology* / Q000601:surgery*; D005260:Female; D006622:Hip Prosthesis; D006801:Humans; D008297:Male; D008875:Middle Aged; D010384:Pelvic Bones / Q000473:pathology* / Q000601:surgery*; D011474:Prosthesis Design; D019651:Plastic Surgery Procedures / Q000379:methods*; D012189:Retrospective Studies; D012446:Sacroiliac Joint / Q000473:pathology* / Q000601:surgery*; D015996:Survival Rate; D016896:Treatment Outcome
keywords: Hemipelvic prosthesis reconstruction; Pelvic malignancy; Sacroiliac joint; Vertebral pedicle screw–rod fixation