RADIOGRAPHY
SIGNS FOR OVERGROWTH OF THE GREATER TROCHANTER IN PERTHES’ DISEASE
Wang ZL, Liu ZQ, Zhang DW, He L, Li M, Liu CK,
Qin JQ
Children Hospital, Chongqing, China
Objective: To explore the early
x-ray risk signs for overgrowth of the greater trochanter (OGGT) in
Perthes’ disease and offer the clues for the prevention.
Methods: To search for the special
signs for OGGT the early x-ray films of Perthes’ disease with OGGT or
without OGGT were reviewed. The correlation of OGGT with the classification,
gender and age were analyzed.
Results: Five early radiography risk
signs,which were related to OGGT,were put forward. ⑴The completely collapsed
and disappeared femoral epiphysis,with
the articular space narrowed; ⑵Extensive
cyst in the metaphysis close to the growth plate;⑶The interrupted or obscure growth plate; ⑷A big sequestrum in the
epiphysis oppressing the growth plate; ⑸A
central metaphyseal peak projecting towards the epiphysis. These five risk signs
all emerged in the resorption stage and have a high sensitivity,accuracy and peculiarity
for the predication of the OGGT. The correlation of OGGT with the
classification, gender and age onsetting was also taken. It proved that the older the children, the more
femoral head was involved, the more susceptibly OGGT developed.
Conclusion: The five risk signs may
be an indication for operative intervention at early stage of Perthes’
disease progress.