Outcome after reconstruction of the proximal humerus for tumor resection: a systematic review.
BACKGROUND
Tumors of the appendicular skeleton commonly affect the proximal humerus, but there is no consensus regarding the best reconstructive technique after proximal humerus resection for tumors of the shoulder.


OBJECTIVE
We wished to perform a systematic review to determine which surgical reconstruction offers the (1) best functional outcome as measured by the Musculoskeletal Tumor Society (MSTS) score, (2) longest construct survival, and (3) lowest complication rate after proximal humerus resection for malignant or aggressive benign tumors of the shoulder.


METHODS
We searched the literature up to June 1, 2013, from MEDLINE, EMBASE, and the Cochrane Library. Only studies reporting results in English, Dutch, or German and with followups of 80% or more of the patients at a minimum of 2 years were included. Twenty-nine studies with 693 patients met our criteria, seven studies (24%) were level of evidence III and the remainder were level IV. Studies reported on reconstruction with prostheses (n = 17), osteoarticular allografts (n = 10), and allograft-prosthesis composites (n = 11). Owing to substantial heterogeneity and bias, we narratively report our results.


RESULTS
Functional scores in prosthesis studies ranged from 61% to 77% (10 studies, 141 patients), from 50% to 78% (eight studies, 84 patients) in osteoarticular graft studies, and from 57% to 91% (10 studies, 141 patients) in allograft-prosthesis composite studies. Implant survival ranged from 0.38 to 1.0 in the prosthesis group (341 patients), 0.33 to 1.0 in the osteoarticular allograft group (143 patients), and 0.33 to 1.0 in allograft-prosthesis group (132 patients). Overall complications per patient varied between 0.045 and 0.85 in the prosthesis group, 0 and 1.5 in the osteoarticular graft group, and 0.19 and 0.79 in the prosthesis-composite graft group. We observed a higher fracture rate for osteoarticular allografts, but other specific complication rates were similar.


CONCLUSIONS
Owing to the limitations of our systematic review, we found that allograft-prosthesis composites and prostheses seem to have similar functional outcome and survival rates, and both seem to avoid fractures that are observed with osteoarticular allografts. Further collaboration in the field of surgical oncology, using randomized controlled trials, is required to establish the superiority of any particular treatment.
Department of Orthopaedic Surgery, Musculoskeletal Oncology Service, Massachusetts General Hospital-Harvard Medical School, Room 3.946, Yawkey Building, 55 Fruit Street, Boston, MA, 02114, USA, teunteunis@gmail.com.
Teun
T
Teunis
Sjoerd P F T
SP
Nota
Francis J
FJ
Hornicek
Joseph H
JH
Schwab
Santiago A
SA
Lozano-Calderón
D001696:Biomechanical Phenomena; D001859:Bone Neoplasms / Q000473:pathology / Q000503:physiopathology / Q000601:surgery*; D016025:Bone Transplantation / Q000009:adverse effects; D006085:Graft Survival; D006801:Humans; D006811:Humerus / Q000473:pathology / Q000503:physiopathology / Q000601:surgery*; D016348:Osseointegration; D010027:Osteotomy; D057068:Periprosthetic Fractures / Q000209:etiology; D011474:Prosthesis Design; D011475:Prosthesis Failure; D019919:Prosthesis Implantation / Q000009:adverse effects / Q000295:instrumentation; D019651:Plastic Surgery Procedures / Q000009:adverse effects / Q000295:instrumentation; D020127:Recovery of Function; D012307:Risk Factors; D013997:Time Factors; D014184:Transplantation, Homologous; D016896:Treatment Outcome