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Calcar Femorale in Sufferers with Osteoarthritis of the Hip Secondary to Developmental Dysplasia.
Clin Orthop Surg. 2017 Dec;9(four):413-419
Authors: Tetsunaga T, Fujiwara Okay, Endo H, Tetsunaga T, Shiota N, Sato T, Ozaki T
Summary
Background: We investigated whether or not the calcar femorale, a cortical septum within the area of the lesser trochanter of the femur, correlates with outcomes of femoral stem implantation in sufferers with osteoarthritis of the hip secondary to developmental dysplasia utilizing computed tomography.
Strategies: This retrospective examine included 277 hips (41 males and 236 females; age, 37 to 92 years) of sufferers who had introduced to Okayama Medical Middle with hip ache. Of those, a complete of 219 hips (31 males and 188 females) had beforehand undergone complete hip arthroplasty. In keeping with the Crowe classification, 147 hips have been categorised as Crowe grade I, 72 hips as Crowe grade II-IV, and 58 hips as regular.
Outcomes: The calcar femorale was recognized in 267 hips (96.four%). The calcar femorale was considerably shorter and extra anteverted in Crowe grade II-IV hips than in Crowe grade I or regular hips. Vital variations within the form of the calcar femorale have been discovered in response to the severity of hip deformity. Three stem designs have been analyzed: single-wedge (59 hips), double-wedge metaphyseal filling (147 hips), and modular (13 hips). Single-wedge stems have been inserted extra parallel to the calcar femorale somewhat than femoral neck anteversion, whereas different kinds of stems scraped the calcar femorale.
Conclusions: The angle of the calcar femorale differs in response to the severity of hip deformity, and the calcar femorale may thus function a extra helpful reference for stem insertion than femoral neck anteversion in complete hip arthroplasty utilizing a single-wedge stem.
PMID: 29201293 [PubMed – indexed for MEDLINE]