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Papers by Stephen Hendricks

Research paper thumbnail of Bone-tendon-bone assembly with cancellous allograft bone block having cortical end portion

Research paper thumbnail of Device and method for insertion of guide pin

Research paper thumbnail of Bioabsorbable fasteners for preparing and securing ligament replacement grafts

Research paper thumbnail of Method and apparatus for preparing a bone and tendon graft

Research paper thumbnail of Pitfalls and Tips for the Management of Injuries of the Anterior Cruciate Ligament

Techniques in Orthopaedics, 1999

Advertisement. Close Window. Close Window. Thank you for choosing to subscribe to the eTOC for Te... more Advertisement. Close Window. Close Window. Thank you for choosing to subscribe to the eTOC for Techniques in Orthopaedics. Enter your Email address: Wolters Kluwer Health may email you for journal alerts and information ...

Research paper thumbnail of Anterior Cruciate Ligament Reconstruction Grafts: MR Imaging Features at Long-term Follow-up—Correlation with Functional and Clinical Evaluation 1

Radiology, 2008

To assess the presence of increased intrasubstance signal intensity within anterior cruciate liga... more To assess the presence of increased intrasubstance signal intensity within anterior cruciate ligament (ACL) grafts and to assess whether such signal intensity changes are correlated to clinical assessments of graft instability and patient function 4-12 years after ACL reconstruction. Ethical permission and written informed patient consent were obtained. The study was HIPAA compliant. Forty-seven patients were included and underwent 1.5-T magnetic resonance (MR) imaging of the knee that was treated surgically. Signal intensity characteristics of the ACL graft were evaluated on sagittal intermediate-weighted and sagittal and axial T2-weighted fast spin-echo MR images. The amount of signal intensity change, femoral and tibial graft tunnel position, and orientation of ACL graft in the coronal plane were assessed. Objective index of graft stability or laxity was performed with arthrometric testing, and subjective function was assessed by using International Knee Documentation Committee (IKDC) scoring. Increased intrasubstance graft signal intensity was found in 70 % (33 of 47) and in 64% (30 of 47) of patients on intermediate-weighted MR images and T2-weighted MR images, respectively. When present, intrasubstance graft signal intensity changes involved less than 25% of the maximal cross-sectional area of the graft in 70% (23 of 33) of cases on intermediate-weighted acquisitions and in 70% (21 of 30) of cases on T2-weighted acquisitions. No significant association was seen between graft signal intensity changes on intermediate-weighted and T2-weighted images and IKDC score (P = .667 and .698, respectively), arthrometric testing (P = .045-.99), and time since surgery (P = .592 and .610, respectively). Small amounts of increased intrasubstance graft signal intensity on intermediate- and T2-weighted images can be seen after ACL reconstruction at long-term follow-up of 4 years or longer and do not necessarily correlate with findings of joint instability or functional limitations in patients after ACL repair.

Research paper thumbnail of Allografts in Sports Medicine

Operative Techniques in Sports Medicine, 2007

Research paper thumbnail of Pitfalls and Tips for the Management of Injuries of the Anterior Cruciate Ligament

Techniques in …, 1999

Advertisement. Close Window. Close Window. Thank you for choosing to subscribe to the eTOC for Te... more Advertisement. Close Window. Close Window. Thank you for choosing to subscribe to the eTOC for Techniques in Orthopaedics. Enter your Email address: Wolters Kluwer Health may email you for journal alerts and information ...

Research paper thumbnail of Comparison of Anatomic Versus Nonanatomic Placement of Femoral Tunnels in Achilles Double-Bundle Posterior Cruciate Ligament Reconstruction

Arthroscopy: The Journal of Arthroscopic & Related Surgery, 2010

Research paper thumbnail of Improper Posterior Tibial Tunnel Graft Placement

Arthroscopy: The Journal of Arthroscopic & Related Surgery, 2008

Arthroscopy: The Journal of Arthroscopic and Related Surgery, Volume 24, Issue 9, Pages 1084-1085... more Arthroscopy: The Journal of Arthroscopic and Related Surgery, Volume 24, Issue 9, Pages 1084-1085, September 2008, Authors:David A. McGuire, MD; Stephen D. Hendricks.

Research paper thumbnail of Use of an endoscopic aimer for femoral tunnel placement in anterior cruciate ligament reconstruction

Arthroscopy: The Journal of Arthroscopic & Related Surgery, 1996

Research paper thumbnail of Incidences of Frostbite in Arthroscopic Knee Surgery Postoperative Cryotherapy Rehabilitation

Arthroscopy: The Journal of Arthroscopic & Related Surgery, 2006

Research paper thumbnail of Protection of Posterior Structures During Transtibial Tunnel Creation for Posterior Cruciate Ligament Reconstruction

Arthroscopy: The Journal of Arthroscopic & Related Surgery, 2006

Research paper thumbnail of The relationship between anterior cruciate ligament reconstruction tibial tunnel location and the anterior aspect of the posterior cruciate ligament insertion

Arthroscopy: The Journal of Arthroscopic & Related Surgery, 1997

A retrospective study of arthroscopic anterior cruciate ligament reconstruction in 20 patients wa... more A retrospective study of arthroscopic anterior cruciate ligament reconstruction in 20 patients was conducted. These patients underwent computed tomography (CT) scans on the involved knee postoperatively to determine sagittal placement of the proximal end of the tibial tunnel (TTp) based on a distance from a specific anatomic reference known as the over-the-back (OTB) ridge. The distance from the posterior aspect of the TTp to the OTB ridge, defined as the backset, was measured from the CT scans. The mean backset was 6.2 mm. The anterior to posterior (AP) tibial plateau diameter was measured from the CT and by plain view radiograph. The mean AP diameter by CT scan was 55.1 mm and the mean AP diameter by radiograph was 55.4 mm. A Pearson correlation coefficient of r = .633 comparing backset versus AP diameter suggests a moderately significant positive relationship. For the AP diameter comparing measurement method, CT versus radiograph, r = .985, representing a highly significant positive relationship, confirming AP diameter sizing accuracy by inexpensive radiography versus CT scan. A proposed backset model based on these data uses three fixed distances, derived by ratio, within a 2-mm range. This model is defined by 5-, 6-, and 7-mm backset intervals for < 50 mm, 50 to 60 mm, and > 60 mm AP diameters respectively, and is currently under prospective clinical investigation.

Research paper thumbnail of Meniscal impingement syndrome

Arthroscopy: The Journal of Arthroscopic & Related Surgery, 1997

Research paper thumbnail of Comparison of ketorolac and opioid analgesics in postoperative ACL reconstruction outpatient pain control

Ambulatory Surgery, 1994

Pain control is an important postoperative consideration with any surgical procedure. Technologic... more Pain control is an important postoperative consideration with any surgical procedure. Technological and procedural improvements have contributed to the reduction in both the degree of surgical difficulty and the postsurgical complications associated with intricate surgeries. As a result, certain surgeries have potential for being performed on an outpatient basis, dependent upon appropriate pain-management regimens and the degree of potential for postoperative complications. Arthroscopic anterior cruciate ligament (ACL) reconstruction is a common procedure. Because of the reduction in invasiveness that arthroscopy provides, outpatient surgery is now routinely employed for ACL patients. The arguments against ACL outpatient surgery have included the reluctance to use ambulatory, indwelling, intravenous pain-pump delivery systems for opioid pain medication. The purpose of this study was to determine the efficacy of a ketorolac tromethamine used for the management of the postoperative pain produced as a result of outpatient ACL reconstruction. When the ketorolac pain management regimen is compared in this setting with meperidine or morphine, pain control is as good as, or in some cases better than, either of the opioid drugs. Additionally, the adverse side effects associated with opioid drugs are significantly reduced at a substantially lower direct cost to the patient.

Research paper thumbnail of Allograft Tissue in ACL Reconstruction

Sports Medicine and Arthroscopy Review, 2009

Musculoskeletal allografts are an essential component for the surgical management of orthopedic i... more Musculoskeletal allografts are an essential component for the surgical management of orthopedic injuries. Allografts are most frequently used in the knee for anterior cruciate ligament (ACL) deficiency and less frequently for other ligament lesions, meniscal transplant, and osteochondral repair. Clinical ACL outcomes have continued to improve as techniques and instrumentation have developed. Allografts are routinely used for ACL reconstructions and although some may argue against them, others feel that not using allografts is a disservice to their patients. The increase in demand for a larger and safer supply of allografts is directly related to the growth in the number of allografts being used. Allografts are safe, reliable, and when all factors are considered, is an excellent ligament replacement solution surgeons should consider for their ACL patients.

Research paper thumbnail of Bone-tendon-bone assembly with cancellous allograft bone block having cortical end portion

Research paper thumbnail of Device and method for insertion of guide pin

Research paper thumbnail of Bioabsorbable fasteners for preparing and securing ligament replacement grafts

Research paper thumbnail of Method and apparatus for preparing a bone and tendon graft

Research paper thumbnail of Pitfalls and Tips for the Management of Injuries of the Anterior Cruciate Ligament

Techniques in Orthopaedics, 1999

Advertisement. Close Window. Close Window. Thank you for choosing to subscribe to the eTOC for Te... more Advertisement. Close Window. Close Window. Thank you for choosing to subscribe to the eTOC for Techniques in Orthopaedics. Enter your Email address: Wolters Kluwer Health may email you for journal alerts and information ...

Research paper thumbnail of Anterior Cruciate Ligament Reconstruction Grafts: MR Imaging Features at Long-term Follow-up—Correlation with Functional and Clinical Evaluation 1

Radiology, 2008

To assess the presence of increased intrasubstance signal intensity within anterior cruciate liga... more To assess the presence of increased intrasubstance signal intensity within anterior cruciate ligament (ACL) grafts and to assess whether such signal intensity changes are correlated to clinical assessments of graft instability and patient function 4-12 years after ACL reconstruction. Ethical permission and written informed patient consent were obtained. The study was HIPAA compliant. Forty-seven patients were included and underwent 1.5-T magnetic resonance (MR) imaging of the knee that was treated surgically. Signal intensity characteristics of the ACL graft were evaluated on sagittal intermediate-weighted and sagittal and axial T2-weighted fast spin-echo MR images. The amount of signal intensity change, femoral and tibial graft tunnel position, and orientation of ACL graft in the coronal plane were assessed. Objective index of graft stability or laxity was performed with arthrometric testing, and subjective function was assessed by using International Knee Documentation Committee (IKDC) scoring. Increased intrasubstance graft signal intensity was found in 70 % (33 of 47) and in 64% (30 of 47) of patients on intermediate-weighted MR images and T2-weighted MR images, respectively. When present, intrasubstance graft signal intensity changes involved less than 25% of the maximal cross-sectional area of the graft in 70% (23 of 33) of cases on intermediate-weighted acquisitions and in 70% (21 of 30) of cases on T2-weighted acquisitions. No significant association was seen between graft signal intensity changes on intermediate-weighted and T2-weighted images and IKDC score (P = .667 and .698, respectively), arthrometric testing (P = .045-.99), and time since surgery (P = .592 and .610, respectively). Small amounts of increased intrasubstance graft signal intensity on intermediate- and T2-weighted images can be seen after ACL reconstruction at long-term follow-up of 4 years or longer and do not necessarily correlate with findings of joint instability or functional limitations in patients after ACL repair.

Research paper thumbnail of Allografts in Sports Medicine

Operative Techniques in Sports Medicine, 2007

Research paper thumbnail of Pitfalls and Tips for the Management of Injuries of the Anterior Cruciate Ligament

Techniques in …, 1999

Advertisement. Close Window. Close Window. Thank you for choosing to subscribe to the eTOC for Te... more Advertisement. Close Window. Close Window. Thank you for choosing to subscribe to the eTOC for Techniques in Orthopaedics. Enter your Email address: Wolters Kluwer Health may email you for journal alerts and information ...

Research paper thumbnail of Comparison of Anatomic Versus Nonanatomic Placement of Femoral Tunnels in Achilles Double-Bundle Posterior Cruciate Ligament Reconstruction

Arthroscopy: The Journal of Arthroscopic & Related Surgery, 2010

Research paper thumbnail of Improper Posterior Tibial Tunnel Graft Placement

Arthroscopy: The Journal of Arthroscopic & Related Surgery, 2008

Arthroscopy: The Journal of Arthroscopic and Related Surgery, Volume 24, Issue 9, Pages 1084-1085... more Arthroscopy: The Journal of Arthroscopic and Related Surgery, Volume 24, Issue 9, Pages 1084-1085, September 2008, Authors:David A. McGuire, MD; Stephen D. Hendricks.

Research paper thumbnail of Use of an endoscopic aimer for femoral tunnel placement in anterior cruciate ligament reconstruction

Arthroscopy: The Journal of Arthroscopic & Related Surgery, 1996

Research paper thumbnail of Incidences of Frostbite in Arthroscopic Knee Surgery Postoperative Cryotherapy Rehabilitation

Arthroscopy: The Journal of Arthroscopic & Related Surgery, 2006

Research paper thumbnail of Protection of Posterior Structures During Transtibial Tunnel Creation for Posterior Cruciate Ligament Reconstruction

Arthroscopy: The Journal of Arthroscopic & Related Surgery, 2006

Research paper thumbnail of The relationship between anterior cruciate ligament reconstruction tibial tunnel location and the anterior aspect of the posterior cruciate ligament insertion

Arthroscopy: The Journal of Arthroscopic & Related Surgery, 1997

A retrospective study of arthroscopic anterior cruciate ligament reconstruction in 20 patients wa... more A retrospective study of arthroscopic anterior cruciate ligament reconstruction in 20 patients was conducted. These patients underwent computed tomography (CT) scans on the involved knee postoperatively to determine sagittal placement of the proximal end of the tibial tunnel (TTp) based on a distance from a specific anatomic reference known as the over-the-back (OTB) ridge. The distance from the posterior aspect of the TTp to the OTB ridge, defined as the backset, was measured from the CT scans. The mean backset was 6.2 mm. The anterior to posterior (AP) tibial plateau diameter was measured from the CT and by plain view radiograph. The mean AP diameter by CT scan was 55.1 mm and the mean AP diameter by radiograph was 55.4 mm. A Pearson correlation coefficient of r = .633 comparing backset versus AP diameter suggests a moderately significant positive relationship. For the AP diameter comparing measurement method, CT versus radiograph, r = .985, representing a highly significant positive relationship, confirming AP diameter sizing accuracy by inexpensive radiography versus CT scan. A proposed backset model based on these data uses three fixed distances, derived by ratio, within a 2-mm range. This model is defined by 5-, 6-, and 7-mm backset intervals for < 50 mm, 50 to 60 mm, and > 60 mm AP diameters respectively, and is currently under prospective clinical investigation.

Research paper thumbnail of Meniscal impingement syndrome

Arthroscopy: The Journal of Arthroscopic & Related Surgery, 1997

Research paper thumbnail of Comparison of ketorolac and opioid analgesics in postoperative ACL reconstruction outpatient pain control

Ambulatory Surgery, 1994

Pain control is an important postoperative consideration with any surgical procedure. Technologic... more Pain control is an important postoperative consideration with any surgical procedure. Technological and procedural improvements have contributed to the reduction in both the degree of surgical difficulty and the postsurgical complications associated with intricate surgeries. As a result, certain surgeries have potential for being performed on an outpatient basis, dependent upon appropriate pain-management regimens and the degree of potential for postoperative complications. Arthroscopic anterior cruciate ligament (ACL) reconstruction is a common procedure. Because of the reduction in invasiveness that arthroscopy provides, outpatient surgery is now routinely employed for ACL patients. The arguments against ACL outpatient surgery have included the reluctance to use ambulatory, indwelling, intravenous pain-pump delivery systems for opioid pain medication. The purpose of this study was to determine the efficacy of a ketorolac tromethamine used for the management of the postoperative pain produced as a result of outpatient ACL reconstruction. When the ketorolac pain management regimen is compared in this setting with meperidine or morphine, pain control is as good as, or in some cases better than, either of the opioid drugs. Additionally, the adverse side effects associated with opioid drugs are significantly reduced at a substantially lower direct cost to the patient.

Research paper thumbnail of Allograft Tissue in ACL Reconstruction

Sports Medicine and Arthroscopy Review, 2009

Musculoskeletal allografts are an essential component for the surgical management of orthopedic i... more Musculoskeletal allografts are an essential component for the surgical management of orthopedic injuries. Allografts are most frequently used in the knee for anterior cruciate ligament (ACL) deficiency and less frequently for other ligament lesions, meniscal transplant, and osteochondral repair. Clinical ACL outcomes have continued to improve as techniques and instrumentation have developed. Allografts are routinely used for ACL reconstructions and although some may argue against them, others feel that not using allografts is a disservice to their patients. The increase in demand for a larger and safer supply of allografts is directly related to the growth in the number of allografts being used. Allografts are safe, reliable, and when all factors are considered, is an excellent ligament replacement solution surgeons should consider for their ACL patients.