Tumor Classifications

Question 1

HO- Broooker

Answer 1

class I: represents islands of bone w/in soft tissues about hip 
class II: inclues bone spurs in pelvis or proximal end of femur leaving at least 1 cm between the opposing bone surfaces; 
class III: represents bone spurs that extend from pelvis or the proximal end of femur, which reduce the space between the opposing bone surfaces to less than 1 cm; 
class IV: indicates radiographic ankylosis of the hip;

Question 2

Mirel’s

Answer 2

Mirels criteria
score > 8 suggests prophylactic fixation
Score	
1
2
3
Site  
upper limb
lower limb
peritrochanteric
Pain 
mild
moderate
functional
Lesion 
blastic
mixed
lytic
Size 
< 1/3
1/3 to 2/3
> 2/3

Question 3

Bone staging - Enneking

Answer 3

Stage
Grade
Site (1)
Metastasis
IA Low Grade T1 - intracompartmental M0 (none)
IB Low Grade T2 - extracompartmental M0 (none)
IIA High Grade T1 - intracompartmental M0 (none)
IIB High Grade T2 - extracompartmental M0 (none)
III Metastatic T1 - intracompartmental M1 (regional or distant)
III Metastatic T2 - extracompartmental M1 (regional or distant)