Introduction
Material and methods
Proximal humerus endoprosthesis | Total humerus endoprosthesis | Proximal humerus endoprosthesis | Total | |
---|---|---|---|---|
Osteosarcoma | Osteosarcoma | Chondrosarcoma | ||
n (%) | 11 (61%) | 4 (22%) | 3 (17%) | 18 |
Mean age (years) | 18.4 ± 10.2 | 19.2 ± 5.6 | 27.5 ± 4.3 | 19.9 ± 8.4 |
Sex (m/f) | 5/6 | 1/3 | 2/1 | 8/10 |
Op side (dominant/nondominant) | 6/5 | 3/1 | 2/1 | 11/7 |
Follow-up (years) | 17.4 ± 8.9 | 20.7 ± 4.9 | 18.3 ± 10.1 | 18.1 ± 7.8 |
Chemotherapy | ||||
COSS 86 | 1 | – | – | 1 |
COSS 86c | 1 | 1 | – | 2 |
COSS 91 | – | 1 | – | 1 |
COSS 96 | 5 | 2 | – | 7 |
EURAMOS | 2 | – | – | 2 |
Individual | 1 | – | – | 1 |
None | 1 | – | 3 | 4 |
Histological subtype | ||||
Osteosarcoma | – | 1 | – | 1 |
Osteoblastic G3 | 2 | 2 | – | 4 |
Osteoblastic/chondroblastic G3 | 1 | – | – | 1 |
Chondroblastic G3 | 1 | – | – | 1 |
Anablastic/chondroblastic G3 | 1 | – | – | 1 |
Anablastic/osteoblastic G3 | 1 | – | – | 1 |
Parosteal | 1 | – | – | 1 |
Teleangiectatic | 2 | – | – | 2 |
Malignant fibrohistocytoma like | 1 | – | – | 1 |
Nonspecific G3 | 2 | 1 | – | 3 |
Chondrosarcoma G2 | – | – | 3 | 3 |
Type of endoprosthesis | ||||
HHMRS® | 7 | 3 | 2 | 12 |
HHMRS® growth | 2 | – | – | 2 |
Custom-made HHMRS® | – | 1 | – | 1 |
Custom-made Salzer | 2 | – | 1 | 3 |
Surgical procedures
Outcome parameters
Statistical analysis
Results
Activity levels
Prior to surgery | +1 year postsurgery | +3 years postsurgery | Last follow-up | |
---|---|---|---|---|
1 | Bicycling, fitness | Nordic walking | Nordic walking | Nordic walking |
2 | Bicycling, fitness, skiing, swimminga | Bicycling, Nordic walking, skiing | Bicycling, skiing | Jogging, skiing, downhill mountain biking |
3 | Bicycling, fitness, swimminga, soccer | – | Bicycling | Bicycling, soccer |
4 | Bicycling, jogging, skiing, tennisa | – | – | Bicycling, jogging |
5 | Bicycling, soccer | – | Bicycling | Bicycling |
6 | Bicycling, Nordic walking, Nordic skiing | Bicycling, Nordic walking | Nordic walking, Bicycling | Nordic walking, bicycling |
7 | Fitness, judoa, dancing | – | Hiking, swimminga | Fitness, swimminga, dancing |
– | Bicycling, volleyballa, hiking, swimminga | – | Hiking | Bicycling, fitness |
9 | Bicycling, fitness, swimminga | – | – | Hiking |
10 | Fitness, tennisa | Fitness | Fitness | Nordic walking, bicycling, fitness |
11 | Bicycling, fitness, hiking | Nordic walking | Nordic walking, bicycling | Nordic walking, bicycling |
12 | Bicycling, fitness, skiing, fencinga | Bicycling, Nordic walking, hiking | Nordic walking, bicycling, hiking | Bicycling |
13 | Hiking, skiing, tennisa | Skeet shootinga | Fitness, skeet shootingg | Fitness, skeet shootinga |
14 | Bicycling, fitness, soccer | – | – | Nordic walking, bicycling, fitness |
15 | Soccer, table tennisa, volleyballa | – | Table tennisa, fitness | Table tennisa, fitness |
16 | Bicycling, swimminga, basketballa | Nordic walking | Nordic walking | Nordic walking |
17 | Bicycling, hiking, dancing, swimminga | Nordic walking | Nordic walking, swimminga | Nordic walking, bicycling |
18 | Bicycling, hiking, fitness, dancing | – | Hiking | Nordic walking, bicycling, dancing |
Functional outcome
Complications
Type of complication | ||||||
---|---|---|---|---|---|---|
Type 1 Soft tissue failure | Type 2 Aseptic loosening | Type 3 Structural failure | Type 4 Infection | Type 5 Tumor progression | Total | |
Overall (%) | 3/18 (17%) a | 1/18 (6%) | 1/18 (6%) | 2/18 (11%) | 0/18 | 5/18 (28%) |
Number of revision surgery (%) | 3/7 (43%) | 1/7 (14%) | 1/7 (14%) | 2/7 (29%) | 0/7 | 7 |
Time to revision (range, years) | 3.9 (0.05–6.3) | 10.9 | 14.9 | 3.6 (0.7–6.4) | – | 5.6 (0.05–14.9) |