A biomechanical analysis of ischiofemoral impingement in a cadaver model

Abstract Ischiofemoral impingement (IFI) occurs due to the diminishing of space between the ischium and lesser trochanter. During a robotic hip study, one hip presented with indications of IFI, an opportunity to explore the pathophysiology and treatment strategies for this unusual condition. This specimen underwent kinematic tests in two states: (i) native lesser trochanter and (ii) resected lesser trochanter. The ‘Resected lesser trochanter’ state was found to increase the hip range of motion and decrease femoral head translation by eliminating contact between the femur and pelvis. These results suggest that lesser trochanteric resection would provide physical benefit for IFI patients.

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Bisphosphonate improves hip range of motion and pain but not femoral head sphericity: A multicentre, randomized clinical trial of children with Perthes disease

Bone Abstracts ◽

10.1530/boneabs.7.oc8 ◽

2019 ◽

Author(s):

Kamal Jamil ◽

Margaret Zacharin ◽

Bruce Foster ◽

Geoffrey Donald ◽

Timothy Hassall ◽

...

Keyword(s):

Clinical Trial ◽

Femoral Head ◽

Range Of Motion ◽

Randomized Clinical Trial ◽

Perthes Disease ◽

Hip Range Of Motion

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The Effect of Pelvic Tilt and Femoral Head Size on Hip Range-of-Motion to Impingement

The Journal of Arthroplasty ◽

10.1016/j.arth.2017.06.016 ◽

2017 ◽

Vol 32 (11) ◽

pp. 3544-3549 ◽

Cited By ~ 12

Author(s):

Thomas F. McCarthy ◽

Jim Nevelos ◽

Randa K. Elmallah ◽

Morad Chughtai ◽

Anton Khlopas ◽

...

Keyword(s):

Femoral Head ◽

Range Of Motion ◽

Pelvic Tilt ◽

Head Size ◽

Femoral Head Size ◽

Hip Range Of Motion

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Diminished femoral head–neck offset and the restricted hip range of motion suggesting a possible role in ACL injuries

Knee Surgery Sports Traumatology Arthroscopy ◽

10.1007/s00167-017-4589-4 ◽

2017 ◽

Vol 26 (2) ◽

pp. 368-373 ◽

Cited By ~ 1

Author(s):

Abolfazl Bagherifard ◽

Mahmoud Jabalameli ◽

Hooman Yahyazadeh ◽

Azadeh Shafieesabet ◽

Kaveh Gharanizadeh ◽

...

Keyword(s):

Femoral Head ◽

Range Of Motion ◽

Acl Injuries ◽

Hip Range Of Motion ◽

Head Neck

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Common Tips for IMEs: Measuring Hip Range of Motion

Guides Newsletter ◽

10.1001/amaguidesnewsletters.1999.janfeb07 ◽

1999 ◽

Vol 4 (1) ◽

pp. 10-11

Author(s):

Charles N. Brooks

Keyword(s):

Range Of Motion ◽

Hip Range Of Motion

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A Novel Measurement Using Digital Radiography to Minimize Fluoroscopy in Total Hip Arthroplasty

The Journal of Hip Surgery ◽

10.1055/s-0041-1728760 ◽

2021 ◽

Author(s):

Andrew G. Yun ◽

Marilena Qutami ◽

Kory B. Dylan Pasko

Keyword(s):

Femoral Head ◽

Total Hip Arthroplasty ◽

Radiation Exposure ◽

Hip Arthroplasty ◽

Fluoroscopy Time ◽

Lesser Trochanter ◽

Total Hip ◽

Preoperative Templating ◽

The Mean ◽

Templating Technique

AbstractPreoperative templating for total hip arthroplasty (THA) is fraught with uncertainty. Specifically, the conventional measurement of the lesser trochanter to the center (LTC) of the femoral head used in preoperative planning is easily measured on a template but not measurable intraoperatively. The purpose of this study was to examine the utility of a novel measurement that is reproducible both on templating and in surgery as a more accurate and practical guide. We retrospectively reviewed 201 patients with a history of osteoarthritis who underwent primary THA. For preoperative templating, the distance from the top of the lesser trochanter to the equator (LeTE) of the femoral head was measured on a calibrated digital radiograph with a neutral pelvis. This measurement was used intraoperatively to guide the choice of the trial neck and head. As with any templating technique, the goal was to construct a stable, impingement-free THA with equivalent leg lengths and hip offset. In evaluating this novel templating technique, the primary outcomes measured were the number of trial reductions and the amount of fluoroscopic time, exposures, and radiation required to obtain a balanced THA reconstruction. Using the LeTE measurement, the mean number of trial reductions was 1.21, the mean number of intraoperative fluoroscopy images taken was 2.63, the mean dose of radiation exposure from fluoroscopy was 0.02 mGy, and the mean fluoroscopy time per procedure was 0.6 seconds. In hips templated with the conventional LTC prior to the LeTE, the mean fluoroscopy time was 0.9 seconds. There was a statistically significant difference in fluoroscopy time (p < 0.001). The LeTE is a reproducible measurement that transfers reliably from digital templating to surgery. This novel preoperative templating metric reduces the fluoroscopy time and consequent radiation exposure to the surgical team and may minimize the number of trial reductions.

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