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Cam impingement

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https://www.readbyqxmd.com/read/27903506/is-the-hip-capsule-thicker-in-diseased-hips
#1
K S Rakhra, A A Bonura, R Nairn, M E Schweitzer, N M Kolanko, P E Beaule
OBJECTIVES: The purpose of this study was to compare the thickness of the hip capsule in patients with surgical hip disease, either with cam-femoroacetabular impingement (FAI) or non-FAI hip pathology, with that of asymptomatic control hips. METHODS: A total of 56 hips in 55 patients underwent a 3Tesla MRI of the hip. These included 40 patients with 41 hips with arthroscopically proven hip disease (16 with cam-FAI; nine men, seven women; mean age 39 years, 22 to 58) and 25 with non-FAI chondrolabral pathology (four men, 21 women; mean age 40 years, 18 to 63) as well as 15 asymptomatic volunteers, whose hips served as controls (ten men, five women; mean age 62 years, 33 to 77)...
November 2016: Bone & Joint Research
https://www.readbyqxmd.com/read/27902171/treatment-of-mixed-type-femoroacetabular-impingement-using-safe-surgical-hip-dislocation-in-adults
#2
Ulukan İnan, Selim Harmanşa, Hakan Ömeroğlu
OBJECTIVES: This study aims to assess the experience gained in a single institution in the treatment of mixed type femoroacetabular impingement (FAI) using safe surgical hip dislocation (SSHD) technique. PATIENTS AND METHODS: In this study, 22 hips of 21 patients (7 males, 14 females; mean age 33.8±10.6 years; range 19-52 years) treated by SSHD technique in our clinic between October 2009 and October 2014 were retrospectively evaluated. Preoperative and final Harris hip scores (HHS) and alpha angles were compared...
December 2016: Eklem Hastalıkları Ve Cerrahisi, Joint Diseases & related Surgery
https://www.readbyqxmd.com/read/27846909/a-retrospective-analysis-on-the-correlation-between-hip-pain-physical-examination-findings-and-alpha-angle-on-mr-images
#3
Olcay Guler, Mehmet Isyar, Dilek Karataş, Tugrul Ormeci, Halis Cerci, Mahir Mahirogulları
BACKGROUND: We aimed to search whether alpha angle, a radiological clue used in the diagnosis of femoroacetabular impingement, is correlated with the presence of hip pain, internal rotation angle, and impingement test results on hip impingement patients (CAM type). METHODS: Medical records of 334 patients (156 women, 178 men) with an average age of 33.8 ± 8.4 (range 20-50) years were retrospectively studied for the alpha angle of the hip measured on magnetic resonance images (MRI)...
November 15, 2016: Journal of Orthopaedic Surgery and Research
https://www.readbyqxmd.com/read/27815008/the-distribution-of-impingement-region-in-cam-type-femoroacetabular-impingement-and-borderline-dysplasia-of-the-hip-with-or-without-cam-deformity-a-computer-simulation-study
#4
Naomi Kobayashi, Yutaka Inaba, So Kubota, So Nakamura, Taro Tezuka, Yohei Yukizawa, Hyonmin Choe, Tomoyuki Saito
PURPOSE: To identify the distribution of the impingement region in cam-type femoroacetabular impingement (FAI) or patients with borderline developmental dysplasia of the hip (DDH) using computer simulation analysis. METHODS: A total of 51 painful hip joints from 42 consecutive cases diagnosed as cam-type FAI (center edge [CE] angle ≥ 25°, alpha angle ≥ 55°) or borderline DDH (CE angle ≥ 20° and < 25°) with or without a cam deformity (alpha angle ≥ 55° or < 55°) were enrolled...
November 1, 2016: Arthroscopy: the Journal of Arthroscopic & related Surgery
https://www.readbyqxmd.com/read/27787917/quantitative-comparison-of-cortical-bone-thickness-using-correspondence-based-shape-modeling-in-patients-with-cam-femoroacetabular-impingement
#5
Penny R Atkins, Shireen Y Elhabian, Praful Agrawal, Michael D Harris, Ross T Whitaker, Jeffrey A Weiss, Christopher L Peters, Andrew E Anderson
: The proximal femur is abnormally shaped in patients with cam-type femoroacetabular impingement (FAI). Impingement may elicit bone remodeling at the proximal femur, causing increases in cortical bone thickness. We used correspondence-based shape modeling to quantify and compare cortical thickness between cam patients and controls for the location of the cam lesion and the proximal femur. Computed tomography images were segmented for 45 controls and 28 cam-type FAI patients. The segmentations were input to a correspondence-based shape model to identify the region of the cam lesion...
October 27, 2016: Journal of Orthopaedic Research: Official Publication of the Orthopaedic Research Society
https://www.readbyqxmd.com/read/27752989/femoral-morphology-in-the-dysplastic-hip-three-dimensional-characterizations-with-ct
#6
Joel Wells, Jeffrey J Nepple, Karla Crook, James R Ross, Asheesh Bedi, Perry Schoenecker, John C Clohisy
BACKGROUND: Hip dysplasia represents a spectrum of complex deformities on both sides of the joint. Although many studies have described the acetabular side of the deformity, to our knowledge, little is known about the three-dimensional (3-D) head and neck offset differences of the femora of dysplastic hips. A thorough knowledge of proximal femoral anatomy is important to prevent potential impingement and improve results after acetabular reorientation. QUESTIONS/PURPOSES: (1) Are there common proximal femoral characteristics in patients with symptomatic hip dysplasia undergoing periacetabular osteotomy (PAO)? (2) Where is the location of maximal femoral head and neck offset deformity in hip dysplasia? (3) Do certain subgroups of dysplastic hips more commonly have cam-type femoral morphology? (4) Is there a relationship between hip ROM as well as impingement testing and 3-D head and neck offset deformity? METHODS: Using our hip preservation database, 153 hips (148 patients) underwent PAO from October 2013 to July 2015...
October 17, 2016: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/27741133/hip-arthroscopy-versus-open-surgical-dislocation-for-femoroacetabular-impingement-a-systematic-review-and-meta-analysis
#7
Dagang Zhang, Long Chen, Guanglin Wang
BACKGROUND: This meta-analysis aims to evaluate the efficacy and safety of hip arthroscopy versus open surgical dislocation for treating femoroacetabular impingement (FAI) through published clinical trials. METHODS: We conducted a comprehensive literature search using PUBMED, EMBASE, and the Cochrane Central Register of Controlled Trials databases for relevant studies on hip arthroscopy and open surgical dislocation as treatment options for FAI. RESULTS: Compared with open surgical dislocation, hip arthroscopy resulted in significantly higher Nonarthritic Hip Scores (NAHS) at 3- and 12-month follow-ups, a significant improvement in NAHS from preoperation to 3 months postoperation, and a significantly lower reoperation rate...
October 2016: Medicine (Baltimore)
https://www.readbyqxmd.com/read/27726746/postoperative-imaging-in-the-setting-of-hip-preservation-surgery
#8
Megan K Mills, Colin D Strickland, Mary K Jesse, Peter A Lowry, Omer Mei-Dan, Jonathan A Flug
Osteoarthritis of the hip remains a prevalent disease condition that influences ever-changing treatment options. Procedures performed to correct anatomic variations, and, in turn, prevent or slow the progression of osteoarthritis, are aptly referred to as types of hip preservation surgery (HPS). Conditions that predispose individuals to femoroacetabular impingement (FAI), including pincer- and cam-type morphology, and hip dysplasia are specifically targeted in HPS. Common surgical interventions include acetabuloplasty, osteochondroplasty, periacetabular osteotomy (PAO), and derotational femoral osteotomy (DFO)...
October 2016: Radiographics: a Review Publication of the Radiological Society of North America, Inc
https://www.readbyqxmd.com/read/27720511/prevalence-of-pincer-cam-and-combined-deformities-in-japanese-hip-joints-evaluated-with-the-japanese-hip-society-diagnostic-guideline-for-femoroacetabular-impingement-a-ct-based-study
#9
Tomohiro Mimura, Kanji Mori, Shin Itakura, Yuki Furuya, Taku Kawasaki, Shinji Imai
BACKGROUND: Femoroacetabular impingement (FAI) is thought to be associated with hip osteoarthritis. We investigated the prevalences of radiologic deformities of the pincer, cam, and their combinations in Japanese hip joints using computed tomography (CT) according to the Japanese Hip Society diagnostic guideline for FAI. METHODS: Multi-slice CT images were evaluated. Pincer deformities were defined as: type 1: center-edge angle (CE) ≥40°; type 2: CE ≥ 30° and acetabular roof obliquity ≤0°; type 3: CE ≥ 25° and retroverted acetabulum...
October 6, 2016: Journal of Orthopaedic Science: Official Journal of the Japanese Orthopaedic Association
https://www.readbyqxmd.com/read/27713583/advanced-hip-joint-degeneration-associated-with-femoroacetabular-impingement-in-a-retired-chiropractor
#10
Peter C Emary, John A Taylor
Femoroacetabular impingement is a relatively new clinical entity only recently described in the orthopedic literature. In this report, we document a severe case of hip joint osteoarthritis associated with cam-type impingement in a retired chiropractor.
September 2016: Journal of the Canadian Chiropractic Association
https://www.readbyqxmd.com/read/27709053/capsular-preservation-using-suture-suspension-technique-in-hip-arthroscopy-for-femoroacetabular-impingement
#11
Andrea M Spiker, Christopher L Camp, Brian T Barlow, Shawn G Anthony, Struan H Coleman
This article describes the use of sutures to enhance visualization while protecting the capsule in both the central and peripheral compartments during hip arthroscopy. We describe first a technique to preserve the proximal capsule cuff while working in the central compartment and then an alternative to the T-capsulotomy while maintaining excellent visualization of the peripheral compartment during femoroplasty of cam-type femoroacetabular impingement. By use of suture suspension of the capsule, multiple goals are achieved: The integrity of the proximal capsule cuff is maintained while aiding in visualization of the central compartment; the iliofemoral ligament is spared, which plays a critical role in preventing microinstability; the necessary space is created to obtain adequate visualization of the peripheral compartment for complete femoroplasty; and operative time is reduced because creation and subsequent repair of the T-capsulotomy can be avoided...
August 2016: Arthroscopy Techniques
https://www.readbyqxmd.com/read/27709031/arthroscopic-femoral-osteochondroplasty-for-cam-type-femoroacetabular-impingement-the-trough-technique
#12
Stephen K Aoki, James T Beckmann, James D Wylie
Arthroscopic osteochondroplasty has become the most common treatment for cam-type femoroacetabular impingement. However, gauging the appropriate depth and location of the femoral osteochondroplasty remains challenging, given the parallax observed from using a 70° arthroscope across multiple viewing perspectives. Consequently, reliable techniques must use a combination of arthroscopic and fluoroscopic checks and balances to assess the femoral head-neck junction to help guide bony resection. We have developed a technique for osteochondroplasty that has made the process more efficient and reliable in our hands...
August 2016: Arthroscopy Techniques
https://www.readbyqxmd.com/read/27695906/is-there-a-distinct-pattern-to-the-acetabular-labrum-and-articular-cartilage-damage-in-the-non-dysplastic-hip-with-instability
#13
Kotaro R Shibata, Shuichi Matsuda, Marc R Safran
PURPOSE: The purpose of this study was to determine whether or not there is a distinct pattern of injury to the acetabular labrum and/or cartilage in the hip with instability without bony dysplasia. METHODS: Surgical records and intra-operative images of consecutive patients who underwent primary hip arthroscopy for femoroacetabular impingement (FAI) and/or hip instability by the senior author from April 2007 to December 2014 were retrospectively reviewed. Pathological changes were documented and charted on a novel diagram of the acetabulum, and classified into eight patterns corresponding to the lesion's location and size...
October 1, 2016: Knee Surgery, Sports Traumatology, Arthroscopy: Official Journal of the ESSKA
https://www.readbyqxmd.com/read/27650107/decreasing-pelvic-incidence-is-associated-with-greater-risk-of-cam-morphology
#14
W Z Morris, C A Fowers, R T Yuh, J J Gebhart, M J Salata, R W Liu
OBJECTIVES: The spinopelvic relationship (including pelvic incidence) has been shown to influence pelvic orientation, but its potential association with femoroacetabular impingement has not been thoroughly explored. The purpose of this study was to prove the hypothesis that decreasing pelvic incidence is associated with increased risk of cam morphology. METHODS: Two matching cohorts were created from a collection of cadaveric specimens with known pelvic incidences: 50 subjects with the highest pelvic incidence (all subjects > 60°) and 50 subjects with the lowest pelvic incidence (all subjects < 35°)...
September 2016: Bone & Joint Research
https://www.readbyqxmd.com/read/27637275/extra-articular-hip-impingement-due-to-heterotopic-ossification-formation-at-the-anterior-inferior-iliac-spine-following-previous-pelvic-external-fixation
#15
Scott M Sandilands, Brandon L Raudenbush, Dominic S Carreira, Brian J Cross
Femoroacetabular impingements (FAIs), specifically cam type and pincer type, continue to be accepted as causes of intra-articular hip pathology and sources of hip pain. Reports of other causes of hip impingement including extra-articular causes have surfaced recently. One structure of importance is the anterior inferior iliac spine (AIIS) due to its inconsistent bony morphology and the pull of the rectus femoris muscle putting it at risk for an avulsion fracture. Under certain circumstances, open surgical excision of exostosis formation after an avulsion fracture of the AIIS has been used...
2016: BMJ Case Reports
https://www.readbyqxmd.com/read/27590644/what-are-the-results-of-surgical-treatment-of-hip-dysplasia-with-concomitant-cam-deformity
#16
Jens Goronzy, Lea Franken, Albrecht Hartmann, Falk Thielemann, Anne Postler, Tobias Paulus, Klaus-Peter Günther
BACKGROUND: Periacetabular osteotomy (PAO) is a reliable procedure to correct the deficient acetabular coverage in hips with developmental dysplasia. It is unclear how the presence of additional femoral cam-type deformity might influence the clinical and radiographic treatment results of PAO. QUESTIONS/PURPOSES: (1) Are there differences in clinical scores (WOMAC, EQ-5D) and examination findings (impingement sign) or radiographic measures of acetabular orientation and head sphericity after PAO for isolated acetabular dysplasia when compared with the combined pathology of dysplasia and additional femoral cam deformity? (2) Are these clinical and radiographic findings after combined surgical therapy for additional cam deformity influenced by different pathology-adjusted surgical techniques? METHODS: From July 2005 to December 2010, 86 patients (106 hips) underwent PAO for hip dysplasia...
September 2, 2016: Clinical Orthopaedics and related Research
https://www.readbyqxmd.com/read/27587515/ct-based-morphological-assessment-of-the-hip-joint-in-japanese-patients-association-with-radiographic-predictors-of-femoroacetabular-impingement
#17
K Mineta, T Goto, K Wada, Y Tamaki, D Hamada, I Tonogai, K Higashino, K Sairyo
AIMS: Femoroacetabular impingement (FAI) has been highlighted and well documented primarily in Western countries and there are few large studies focused on FAI-related morphological assessment in Asian patients. We chose to investigate this subject. PATIENTS AND METHODS: We assessed the morphology of the hip and the prevalence of radiographic FAI in Japanese patients by measuring predictors of FAI. We reviewed a total of 1178 hips in 695 men and 483 women with a mean age of 58...
September 2016: Bone & Joint Journal
https://www.readbyqxmd.com/read/27583164/unrecognized-osteoid-osteoma-of-the-proximal-femur-with-associated-cam-impingement
#18
REVIEW
Justin A Ly, Erin M Coleman, Gary S Cohen, Eric J Kropf
Femoro-acetabular impingement is a common cause of hip pain in young athletes. Evaluation typically includes radiographs and magnetic resonance imaging. It is important to appreciate uncommon diagnoses and the role of complimentary imaging. This clinical vignette emphasizes the need complete imaging with CT in select case of atypical hip pain. We present a 19-year old soccer player who underwent seemingly successful arthroscopic FAI surgery but returned with pain. Computed tomography (CT) revealed osteoid osteoma of the lesser trochanter...
August 2016: Journal of Hip Preservation Surgery
https://www.readbyqxmd.com/read/27583162/is-there-a-pathological-alpha-angle-for-hip-impingement-a-diagnostic-test-study
#19
Cristián Barrientos, Maximiliano Barahona, Jorge Diaz, Julian Brañes, Felipe Chaparro, Jaime Hinzpeter
The normal value of alpha angle is controversial. The aim of this study was to compare the alpha angle in asymptomatic volunteers versus patients who had undergone surgery for symptomatic cam-type femoroacetabular impingement (FAI) and determine a diagnostic cut-off value for symptomatic cam impingement. This is a diagnostic test study. Cases were defined as those patients who had undergone surgery for symptomatic cam or mixed type FAI. Controls were defined as asymptomatic volunteers, with no history of hip pain who had undergone a computed tomography (CT) scan of the abdomen and pelvis for a non-joint or bone-related reason...
August 2016: Journal of Hip Preservation Surgery
https://www.readbyqxmd.com/read/27581791/radiographic-outcomes-following-femoroacetabular-impingement-correction-with-open-surgical-management-a-systematic-review
#20
REVIEW
R Kyle Martin, Ivan Dzaja, Jeffrey Kay, Muzammil Memon, Andrew Duong, Nicole Simunovic, Olufemi R Ayeni
Femoroacetabular impingement (FAI) is a common cause of hip pain, and open surgical approaches remain an important treatment option for FAI. This systematic review of the literature sought to determine what post-operative radiographic outcomes have been reported following open surgical correction of FAI. After screening and full-text review, 18 studies involving 1192 hips in 1084 patients were included for analysis. In total, 24 radiological outcomes were reported. CAM-type FAI was most frequently assessed using the alpha angle (61...
December 2016: Current Reviews in Musculoskeletal Medicine
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