Extended distal femur resection: Megaprosthesis with telescopic bone allograft augmentation versus total femur prosthesis.
J Surg Oncol
; 129(8): 1568-1576, 2024 Jun.
Article
in En
| MEDLINE
| ID: mdl-38800838
ABSTRACT
BACKGROUND AND OBJECTIVE:
Oncological distal femur resections can leave a proximal femur too short to host a stem. Reconstructive techniques are then challenging. The purpose of the study is to compare implant survival, complication rate and MSTS of two different options.METHODS:
We retrospectively divided 33 patients with primary bone tumours of distal femur in Group 1 (16 patients reconstructed with knee megaprosthesis with proximal bone augmentation, APC) and Group 2 (17 patients reconstructed with total femur prosthesis, TFP). Less than 12 cm of remaining proximal femur were planned for all resections.RESULTS:
MSTS score at 2 years is 25 ± 5 for Group 1 and 19 ± 7 for Group 2 (confidence interval [C.I.] 95%, p = 0.02). At 5 years it is 27 ± 2 for Group 1 and 22 ± 6 for Group 2 (C.I. 95%, p = 0.047). Failure and complication rates are lower for Group 1, but no statistical significance was reached. In APC reconstruction, union at the host-allograft junction was achieved in 16 out of 16 patients using the telescopic bone augmentation technique.CONCLUSIONS:
APC provides higher functional results compared to TFP after extended distal femur resection. In APC reconstruction, telescopic augmentation is excellent for achieving union at the host-allograft junction.Key words
Full text:
1
Collection:
01-internacional
Database:
MEDLINE
Main subject:
Bone Transplantation
/
Femoral Neoplasms
/
Femur
Limits:
Adolescent
/
Adult
/
Female
/
Humans
/
Male
/
Middle aged
Language:
En
Journal:
J Surg Oncol
Year:
2024
Document type:
Article
Affiliation country:
Italy
Country of publication:
United States