The Effect of Aging on the Shape of the Proximal Femur

Noble, Philip C.; Box, G. G.; Kamaric, Emir; Fink, Michael; Alexander, Jerry W.; Tullós, Hugh S.

doi:10.1097/00003086-199507000-00006

Cited by 168 publications

(125 citation statements)

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“…On the femoral side, specific differences are reported in femoral offset and femoral head height [27,30]. However, we found no difference in ROM between men and women at the preoperative assessment.…”

Section: Discussioncontrasting

confidence: 66%

Patient Perceived Outcomes After Primary Hip Arthroplasty: Does Gender Matter?

Lavernia

Alcerro

Contreras

et al. 2011

Clinical Orthopaedics &Amp; Related Research

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Background Total hip arthroplasty (THA) provides high functional scores and long-term survivorship. However, differences in function and disability between men and women before and after arthroplasty are not well understood. Questions/purposes We determined if there was a gender difference in patient-perceived functional measures and range of motion in primary THA. Methods We retrospectively studied 532 patients (658 hips) undergoing primary THA. A total of 59% were women and 41% were men. Patients were assessed preoperatively and at minimum 2 years using Quality of Well-being, SF-36, WOMAC, and Harris hip score. We determined if differences existed between genders before and at followup for all dependent measures. Independent t-tests were also used to determine differences between genders concerning the change (D) scores and hip range of motion. The time course of perceived functional recovery was also documented.

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Section: Discussioncontrasting

confidence: 66%

Patient Perceived Outcomes After Primary Hip Arthroplasty: Does Gender Matter?

Lavernia

Alcerro

Contreras

et al. 2011

Clinical Orthopaedics &Amp; Related Research

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“…An inferior screw position is mandatory by the proximal femoral nailantirotation (PFN-A) operative technique, recommended optionally by the Gamma3 operative technique, and also recommended by the studies of Mainds and Newman 15 and Wu and Shih. 16 The tip-apex distance (TAD) was constant at 45 mm, assuming a femoral head diameter of 45.9 mm, 17 consistent with a worst-case scenario as discussed by Baumgaertner et al 11 For statistical power, six samples of four different hip screws were tested: Stryker Gamma3, Stryker Gamma3 Rotational Control (RC), Synthes PFN-A, and Synthes TFN systems (Fig. 2), all from second-generation IM nail systems.…”

Section: Specimensmentioning

confidence: 64%

Hip screw migration testing: First results for hip screws and helical blades utilizing a new oscillating test method

Born

Karich²,

Bauer

et al. 2010

Journal Orthopaedic Research

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Despite continued improvement in the methods and devices used to treat intertrochanteric fractures, there remains an unacceptable amount of failures. The cut-out rate for hip screws has been recorded up to 8.3%. To evaluate the migration of different implants under physiological loads, a multiplanar biomechanical test method for hip screws was developed, the first to incorporate a simulation of the human gait cycle by an oscillating flexion/extension movement of the test device. The new method was used to compare different hip screw and blade designs with respect to their directional migration resistance. The test method generated failure modes that were consistent with those observed clinically. Under cyclic loading, the hip screws migrated predominantly in a cephalad direction. In contrast, the helical blades exhibited a distinct migration in their axial direction. The Gamma3 hip screw design showed a significantly higher migration resistance compared with other screw and helical blade designs. The results demonstrate the ability of hip screws to significantly reduce axial migration and prevent cut-out under simulated walking loads. Further, the new multiplanar test method creates a physiological environment that can be used to optimize designs for intertrochanteric fracture fixation. ß

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“…11 These researchers reported that 40% of knee injuries that occurred in running were caused by malalignment of the lower limb and in their case increased Q-angles. In those runners aged 36 -60 with abnormal Q-angles, the 16 suggest that the size and shape of the human femur vary with gender, age, stature and ethnic background of the individual. The sample in this study included Indian males over a range of ages.…”

Section: Discussionmentioning

confidence: 98%

The quadriceps angle and the incidence of knee injury in Indian long-distance runners

Puckree¹,

Govender²,

Govender³

et al. 2009

S Afr J SM

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Objective. To investigate the incidence of knee injuries in runners and to determine the proportion of injuries involving abnormal quadriceps (Q)-angles. Design.One hundred male Indian runners between the ages of 25 and 65 years from 5 athletic clubs in Durban volunteered to participate in the study. The Q-angle was measured using a goniometer. Other relevant information was obtained using a validated questionnaire. The data were analysed by comparing measured Q-angles with 'normal' values of Q-angles obtained from the literature. A paired t-test at a probability of 0.05 was used.Setting. Data were collected at club meetings.Main outcome measure. The primary outcome of the study was to determine the proportion of runners with abnormal Q-angles. Thereafter the rate of knee injuries in runners with abnormal Q-angles was determined.Results. Data from 88 runners were usable. Fifty-one per cent of the runners sustained knee injuries. Fifty-eight per cent of the sample had abnormal Q-angles. Sixty-seven per cent of the runners with abnormal Q-angles sustained knee injuries. Conclusion.More runners with abnormal Q-angles sustained knee injuries. There is a need to determine reference values for Q-angles for the South African population, the proportion of the population that present with abnormal Q-angles, and the reasons for this.

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The Effect of Aging on the Shape of the Proximal Femur

Cited by 168 publications

References 0 publications

Patient Perceived Outcomes After Primary Hip Arthroplasty: Does Gender Matter?

Patient Perceived Outcomes After Primary Hip Arthroplasty: Does Gender Matter?

Hip screw migration testing: First results for hip screws and helical blades utilizing a new oscillating test method

The quadriceps angle and the incidence of knee injury in Indian long-distance runners

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