title: Thigh pain in cementless total hip replacement.
abstract: The incidence of thigh pain was investigated in 51 joints implanted with model Y or YII cementless total hip system. The 51 patients were followed for one or more years after surgery. Twenty-six out of 51 implanted with the model Y, and the other 25 with the model YII. Thigh pain appeared in 11 out of 26 patients (43%) replaced by model Y and in only 2 out of 25 (8%) replaced by model Y II. The difference in the incidence of thigh pain was attributed to the difference in the extent of the press fit of the stem, stress distribution and postoperative activity. To prevent thigh pain, a favorable press fit must be achieved during surgery, and the excessive weight-bearing must be restricted in postoperative course. In our improved stem design, stress is distributed uniformly on the interface between the bone and the stem resulting in reduction of thigh pain.
authors.affiliation: Department of Orthopaedic Surgery, Yamanashi Medical College, Japan.
authors.forename: Y
authors.initials: Y
authors.lastname: Hamada
authors.forename: N
authors.initials: N
authors.lastname: Akamatsu
authors.forename: I
authors.initials: I
authors.lastname: Nakajima
authors.forename: T
authors.initials: T
authors.lastname: Ide
authors.forename: Y
authors.initials: Y
authors.lastname: Yamamoto
authors.forename: S
authors.initials: S
authors.lastname: Tachigi
authors.forename: T
authors.initials: T
authors.lastname: Horiuchi
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D001696:Biomechanical Phenomena; D002484:Cementation; D003198:Computer Simulation; D005260:Female; D005500:Follow-Up Studies; D006622:Hip Prosthesis / Q000379:methods; D006801:Humans; D008297:Male; D008875:Middle Aged; D010149:Postoperative Pain / Q000453:epidemiology / Q000517:prevention & control*; D011474:Prosthesis Design; D017755:Prosthesis Fitting; D013848:Thigh