Bone ingrowth into a porous-coated total shoulder component retrieved postmortem.
An uncemented porous-coated humeral component, which functioned in vivo for over 2 1/2 years, was retrieved postmortem and examined histologically. Radiographs of the specimen revealed close approximation to the endosteal cortex medially and laterally. Apposition was limited or absent anteriorly and posteriorly. The overall extent of bone ingrowth was approximately 11% of the available pore volume with over 95% of ingrowth occurring in the medial and lateral quadrants. Bone ingrowth was limited anteriorly and posteriorly to regions in which spot welds were identified radiographically. There were no loose beads or coating failure observed.
Cook
S D
SD
Department of Orthopaedic Surgery, Tulane University School of Medicine, New Orleans, Louisiana 70112.
Barrack
R L
RL
Salkeld
S L
SL
Prewett
A B
AB
Edmunds
J O
JO
D000328:Adult; D001843:Bone Cements; D006801:Humans; D006811:Humerus / Q000033:anatomy & histology; D007595:Joint Prosthesis; D008297:Male; D016348:Osseointegration; D011474:Prosthesis Design; D012784:Shoulder Fractures / Q000601:surgery; D012785:Shoulder Joint; D013997:Time Factors
D001843:Bone Cements