It is in my opinion that you can not rule in the Dx of Legg-Calve-Perthe's disease due to the fact that the age of onset occurs between 2-13 years of age. Your patient is 60 y.o. Characteristics of this Dx is a psoatic limp due to weakness of psoas major- therefore, the affected LE moves in external rotation, flexion, and adduction. Subjective c/o of gradual onset of "aching" pain at the hip, thigh and knee. Objectively you should notice AROM limited in abduction and extension. Radiographic findings provide evidence of postiive bony crescent signs.
Your patient seems to have increased pain with weightbearing activities such as walking up an incline and prolonged ambulation. These activities increase joint compressive forces at the hip secondary to gravity and muscular forces crossing that joint. Ever considering getting this patient on an aquatic therapy program? That might help. Just some additional thoughts to help your patient out...
-Regan Wong, MS, PT, CSCS
Strive! Physical Therapy Centers