TY - JOUR
T1 - The relationship between head-neck ratio and pseudotumour formation in metal-on-metal resurfacing arthroplasty of the hip
AU - Grammatopoulos, G.
AU - Pandit, H.
AU - Murray, D. W.
AU - Gill, H. S.
PY - 2010
Y1 - 2010
N2 - Pseudotumour is a rare but important complication of metal-on-metal hip resurfacing that occurs much more commonly in women than in men. We examined the relationship between head-neck ratio (HNR) and pseudotumour formation in 18 resurfaced hips (18 patients) revised for pseudotumour and 42 asymptomatic control resurfaced hips (42 patients). Patients in whom pseudotumour formation had occurred had higher pre-operative HNR than the control patients (mean 1.37 (sd 0.10) vs mean 1.30 (sd 0.08) p = 0.001). At operation the patients with pseudotumours had a greater reduction in the size of their femoral heads (p = 0.035) and subsequently had greater neck narrowing (mean 10.1% (sd 7.2) vs mean 3.8% (sd 3.2) p <0.001). No female patient with a pre-operative HNR
AB - Pseudotumour is a rare but important complication of metal-on-metal hip resurfacing that occurs much more commonly in women than in men. We examined the relationship between head-neck ratio (HNR) and pseudotumour formation in 18 resurfaced hips (18 patients) revised for pseudotumour and 42 asymptomatic control resurfaced hips (42 patients). Patients in whom pseudotumour formation had occurred had higher pre-operative HNR than the control patients (mean 1.37 (sd 0.10) vs mean 1.30 (sd 0.08) p = 0.001). At operation the patients with pseudotumours had a greater reduction in the size of their femoral heads (p = 0.035) and subsequently had greater neck narrowing (mean 10.1% (sd 7.2) vs mean 3.8% (sd 3.2) p <0.001). No female patient with a pre-operative HNR
UR - http://www.scopus.com/inward/record.url?scp=78649435612&partnerID=8YFLogxK
UR - http://dx.doi.org/10.1302/0301-620X.92B11.24640
UR - http://www.ncbi.nlm.nih.gov/entrez/query.fcgi?cmd=Retrieve&db=PubMed&dopt=Citation&list_uids=21037347
U2 - 10.1302/0301-620X.92B11.24640
DO - 10.1302/0301-620X.92B11.24640
M3 - Article
SN - 0301-620X
VL - 92
SP - 1527
EP - 1534
JO - Journal of Bone and Joint Surgery - British Volume
JF - Journal of Bone and Joint Surgery - British Volume
IS - 11
ER -