scholarly journals Measuring Visualized Joint Surface in Hallux Metatarsophalangeal Arthroscopy

2017 ◽  
Vol 2 (3) ◽  
pp. 2473011417S0002
Author(s):  
Michael Hull ◽  
John T. Campbell ◽  
Rebecca Cerrato ◽  
Clifford Jeng ◽  
R. Frank Henn
Keyword(s):  
Articular Surface ◽  
Proximal Phalanx ◽  
Metatarsal Head ◽  
Lateral View ◽  
Joint Surface ◽  
Foot And Ankle ◽  
Kirschner Wires ◽  
Diagnostic Confidence ◽  
Joint Surfaces ◽  
Small Joint

Category: Arthroscopy, Midfoot/Forefoot Introduction/Purpose: Arthroscopy has been increasingly utilized to evaluate small joints in the foot and ankle. In the hallux metatarsophalangeal (MTP) joint, little data exist evaluating the efficacy of arthroscopy to visualize the articular surface. The goal of this cadaveric study was to determine how much articular surface of the MTP joint could be visualized. Methods: Ten (10) fresh cadaveric foot specimens were evaluated using standard arthroscopy techniques. Arthrosocopy was performed with gravity distraction utilizing a 1.9 mm 30° arthroscope and small joint instruments. The edges of the visualized joint surface were marked with curettes and Kirschner wires; the joints were then surgically exposed and imaged. The percentage of cartilage visualized (visualized / total cartilage x 100%) was measured using ImageJ® software. Measurements include surface area visualized on axial imaging as well as arc visualized on lateral imaging Results: On the distal 2-dimensional projection of the joint surface, an average 57.5% (49.6 – 65.3) of the metatarsal head and 100% (100-100) of the proximal phalanx base were visualized. From a lateral view of the metatarsal head, an average 72° (65-80) was visualized out of an average total articular arc of 199° (192-206), for an average 36.5% (32.2 – 40.8) of the articular arc. Conclusion: The results suggest that hallux MTP arthroscopy visualizes a sizable portion of the joint surfaces. However, incomplete visualization could potentially miss a hallux metatarsophalangeal lesion. Further imaging preoperatively may improve diagnostic confidence.

Measuring Visualized Joint Surface in Hallux Metatarsophalangeal Arthroscopy

2018 ◽  
Vol 39 (8) ◽  
pp. 978-983
Author(s):  
Michael Hull ◽  
John T. Campbell ◽  
Clifford L. Jeng ◽  
R. Frank Henn ◽  
Rebecca A. Cerrato
Keyword(s):  
Clinical Practice ◽  
Clinical Relevance ◽  
Articular Surface ◽  
Proximal Phalanx ◽  
Metatarsophalangeal Joint ◽  
Metatarsal Head ◽  
Lateral View ◽  
Joint Surface ◽  
Foot And Ankle ◽  
Kirschner Wires

Background: Arthroscopy has been increasingly used to evaluate small joints in the foot and ankle. In the hallux metatarsophalangeal (MTP) joint, little data exist evaluating the efficacy of arthroscopy to visualize the articular surface. The goal of this cadaveric study was to determine how much articular surface of the MTP joint could be visualized during joint arthroscopy. Methods: Ten fresh cadaveric foot specimens were evaluated using standard arthroscopy techniques. The edges of the visualized joint surface were marked with curettes and Kirschner wires; the joints were then surgically exposed and imaged. The visualized surface area was measured using ImageJ® software. Results: On the distal 2-dimensional projection of the joint surface, an average 57.5% (range, 49.6%-65.3%) of the metatarsal head and 100% (range, 100%-100%) of the proximal phalanx base were visualized. From a lateral view of the metatarsal head, an average 72 degrees (range, 65-80 degrees) was visualized out of an average total articular arc of 199 degrees (range, 192-206 degrees), for an average 36.5% (range, 32.2%-40.8%) of the articular arc. Conclusion: Complete visualization of the proximal phalanx base was obtained. Incomplete metatarsal head visualization was obtained, but this is limited by technique limitations that may not reflect clinical practice. Clinical Relevance: This information helps to validate the utility of arthrosocpy at the hallux metatarsophalangeal joint.

scholarly journals Evaluating the Subtalar Joint in Tibiotalocalcaneal Nail

2018 ◽  
Vol 3 (3) ◽  
pp. 2473011418S0040
Author(s):  
Megan Reilly ◽  
Kurosh Darvish ◽  
Soroush Assari ◽  
John Cole ◽  
Tyler Wilps ◽  
...  
Keyword(s):  
Surface Area ◽  
Subtalar Joint ◽  
Articular Surface ◽  
Joint Surface ◽  
Central Dome ◽  
Below The Knee ◽  
Joint Surfaces ◽  
Circular Surface ◽  
The Mean ◽  
Pass Through

Category: Hindfoot Introduction/Purpose: In tibiotalocalcaneal nails for arthrodesis, the path of the nail through the subtalar joint has not been well documented. Ideally, the defect caused by reaming and the nail does not pass through the joint surface so that the amount of bony contact between the talus and calcaneus is maintained in order to optimize fusion. Our hypothesis is that the TTC nail does not destroy a significant amount contact area between the talus and calcaneus. However, using larger diameter nails (which are inherently stronger) will have more of an effect on the contact surface. Methods: Five cadaveric below the knee specimens were obtained. The ankle was disarticulated on each specimen. Subsequently, a guidepin was drilled from the central dome of the talus down to the calcaneus. The 11 mm reamer was then passed over the guidepin through the calcaneus to simulate retrograde reaming of a TTC nail. Then, the subtalar joint was dissected open and the articular surface was documented in comparison with the area that was reamed out. Measurements were then made, using software that calculated two dimensional surface area to determine the percentage of actual subtalar joint area that was reamed out. The mean percentage of articular area that was removed with the reamer was then calculated. Results: Among the five specimens, in the calcaneus, the mean total articular area was 599mm2±113 and the mean drilled articular area was 21mm2±16. The percentage of the calcaneal articular surface that was removed with the reamer was 3.4%±1.9. In the talus, the mean total articular area was 782mm2±130 and the mean drilled articular area was 39mm2±18. The percentage of the talar articular surface that was removed with the reamer was 5.0%±2.3. Additionally, an 11 mm reamer makes a circular surface area of 95mm2, and the statistics above indicate that a significant portion of the reamed area is nonarticular, within the calcaneal sulcus or the talar sulcus. Conclusion: In a tibiotalocalcaneal nail the subtalar joint is typically incompletely visualized, however this anatomic study demonstrates that the 11 mm reamer eliminates about 3.4% of the calcaneal articular surface and about 5% of the talar articular surface. Therefore, the majority of the articular surface is left intact, which is ideal in optimizing arthrodesis outcomes. Furthermore, this study could extrapolate the effects of a larger nail on the availability of joint surface. It could also be used to argue for cartilage stripping of the affected joint surfaces in arthrodesis preparation, because the majority of the articular surface is, in fact, left intact.

scholarly journals Influence of First Metatarsophalangeal Joint Degenerative Changes on Functional Outcomes Following Hallux Valgus Correction

2020 ◽  
Vol 5 (2) ◽  
pp. 2473011420S0001
Author(s):  
Ryan G. Rogero ◽  
Andrew Fischer ◽  
Daniel Corr ◽  
Joseph T. O’Neil ◽  
Daniel J. Fuchs ◽  
...  
Keyword(s):  
Hallux Valgus ◽  
Functional Outcomes ◽  
Proximal Phalanx ◽  
Metatarsal Head ◽  
Degenerative Changes ◽  
Foot And Ankle ◽  
First Metatarsophalangeal Joint ◽  
Pain Scores ◽  
Plantar Aspect ◽  
Exposed Bone

Category: Bunion; Other Introduction/Purpose: Previous studies have documented the prevalence of 1st metatarsophalangeal (MTP) joint arthritis in the setting of hallux valgus, with the articulation between the metatarsal head and the sesamoids being particularly vulnerable. However, little is known as to whether such degenerative changes of the metatarsal head-sesamoid articulation have any influence on postoperative functional and pain scores following hallux valgus correction. The purpose of this study is to determine the influence of degenerative changes of the 1st metatarsal head on outcomes at 2 years postoperatively. Methods: Patients who underwent correction of a hallux valgus deformity from 2016 to 2017 with 1 of 4 foot and ankle fellowship-trained orthopaedic surgeons were included in this study. Degenerative changes were classified using a novel grading system dividing the articular surface of the metatarsal head into 6 zones, with zones 1 through 4 representing the surface which articulates with the base of the proximal phalanx and zones 5 and 6 representing the plantar aspect of the metatarsal head. Cartilage loss in each zone was graded from 0-2, with a score of 0 representing the absence of arthritis, a score of 1 indicating fissures without exposed bone, and a score of 2 representing degenerative changes with exposed bone, for a maximum score of 12. Scoring was performed by the operating surgeon at the time of the index procedure by direct visualization. Photographic documentation of the metatarsal head was obtained in every case for secondary confirmation. At 2 years postoperatively, patients with intraoperative grading were contacted to complete the Foot and Ankle Ability Measure (FAAM) Activities of Daily Living (ADL) and Sports subscales and Visual Analog Scale (VAS) for pain. Spearman’s correlations and one-way ANOVA were performed to determine if the degree of arthritis had any influence on outcomes. Results: Seventy-six patients (92.1% female) with both intraoperative arthritic grading and 2-year functional outcomes were included. At a mean of 24.6 (range, 23-28) months postoperatively, patients reported a mean (+- standard deviation) FAAM-ADL of 93.0 +- 11.9/100, FAAM-Sport of 84.8 +- 21.4/100, and VAS pain of 16.8 +- 22.2/100. Arthritis in zone 1 (r=0.345, p= 0.005) and zone 4 (r=0.249, p=0.044) was found to be positively correlated with FAAM-Sport scores. ANOVA analysis revealed those with a total arthritis grade of 0 or 2 or more in zones 1-4 had a significantly greater reduction in VAS pain scores (means of -36.5 and -48.1, respectively) than those with a grade of 1 (mean: +5.0) (p=0.005). Conclusion: We have demonstrated a significant influence of arthritis on 2-year functional outcomes following HV correction, with higher levels of degenerative changes in zones 1 and 4 generally associated with better functional outcomes. While this finding was unexpected, it demonstrates that those with arthritis may benefit more from surgical correction of HV. Furthermore, surgeon intraoperative evaluation of arthritis may allow for improved counseling of patients regarding expected postoperative functional improvement.

The Anatomical Location of the Flexor Hallucis Brevis as It Pertains to Implant Arthroplasty

2012 ◽  
Vol 102 (1) ◽  
pp. 1-4 ◽  
Author(s):  
Matthew DeMore ◽  
Erigena Baze ◽  
Anthony LaLama ◽  
Patrick Branagan ◽  
Michael Bowen ◽  
...  
Keyword(s):  
Articular Surface ◽  
Proximal Phalanx ◽  
Metatarsophalangeal Joint ◽  
Anatomical Location ◽  
Foot And Ankle ◽  
Insertion Point ◽  
First Metatarsophalangeal Joint ◽  
Hallux Limitus ◽  
Fresh Frozen ◽  
The Mean

Background: Hallux limitus/rigidus is a painful arthritic condition affecting the first metatarsophalangeal joint that can be treated by implant arthroplasty, which, ultimately, may cause loss of the anatomical insertion points of the flexor hallucis brevis muscle. Preparation of the base involves resection of bone, thus compromising the insertion of the flexor hallucis brevis muscle. Methods: We dissected 54 fresh-frozen cadaveric specimens and quantitatively measured the distalmost insertion point of the medial and lateral heads of the flexor hallucis brevis muscle. These measurements were performed for both heads. The measurements were performed three times by three separate examiners. In addition, taking into consideration the anatomical construct of the articular surface of the base of the proximal phalanx of the hallux, another measurement was performed to note the concavity using 44 of the specimens. Again, these measurements were performed three times by three separate investigators. Results: The mean length from the base of the proximal phalanx to the distalmost insertion of the medial and lateral heads of the flexor hallucis brevis muscle was found to be 7 mm. Conclusions: This study provides precise anatomical data that can be used by foot and ankle surgeons when considering the use of implant arthroplasty for the treatment of hallux limitus/rigidus and the ability to maintain the insertion point of the flexor hallucis brevis muscle. (J Am Podiatr Med Assoc 102 (1):1-4, 2012)

Dorsal and Volar Surgical Approaches to the Metacarpophalangeal Joint: A Comparative Anatomic Study

2017 ◽  
Vol 22 (03) ◽  
pp. 297-302
Author(s):  
Eitan Melamed ◽  
Nicholas Calotta ◽  
Ricardo Bello ◽  
Richard M Hinds ◽  
John T Capo ◽  
...  
Keyword(s):  
Surface Area ◽  
Articular Surface ◽  
Insertion Site ◽  
Proximal Phalanx ◽  
Extensor Tendon ◽  
Joint Surface ◽  
Surgical Approaches ◽  
Collateral Ligament ◽  
Volar Approach ◽  
A1 Pulley

Background: We compared 3 surgical approaches to the MP joint: a dorsal extensor tendon–splitting approach, a dorsal extensor tendon–reflecting parasagittal approach, and the volar A1 pulley approach. We quantitatively compared each of these approaches by measuring the amount of articular cartilage exposed on the base of the proximal phalanx. We hypothesize that visualization of the articular cartilage of the proximal phalangeal base is enhanced with the volar approach. Methods: The MP joints of the 32 available digits were randomly assigned to 1 of 3 surgical approaches: extensor tendon splitting (A), extensor tendon reflecting (B), or volar approach (C). After each approach, the visible articular surface of the base of the proximal phalanx was stained with methylene blue. The MP joints were then disarticulated, and the proximal phalanges were digitally mapped using a 3-dimensional digitizer. Three-dimensional computer software was used to analyze and calculate the dyed exposed surface area and total surface area of each specimen. Results: The mean % exposed joint surface area for the dorsal extensor splitting, dorsal extensor reflecting and volar approaches were 62%, 67% (over the dorsal side of the proximal phalanx) and 54% (over the volar side of the proximal phalanx), respectively. Multiple linear regression showed statistical significance for a smaller percentage of articular surface area exposed with the volar approach. However, this was not clinically significant. A significant association was found between location in the small finger and greater % exposed joint surface, compared to approaches in the index finger. In all volar approach specimens, the collateral insertion site was visible, but not in the dorsal approach specimens. Conclusions: Knowledge of the limits of each exposure is essential for planning the most appropriate surgical approach. The A1 pulley approach provided greater access to the volar 50% of the joint and collateral ligament insertion without violating the extensor mechanism. The amount of joint surface visualized through all 3 approaches was not significantly different. However, based on the accessibility to the collateral ligament insertion site among three different approaches, we recommend the volar A1 pulley approach for treatment of avulsion fractures of the base of the proximal phalanx. For other injuries of the MP joint, including the intra-articular proximal phalanx base fractures, and metacarpal head fractures, the dorsal approaches are still indicated.

scholarly journals Influence of First Metatarsophalangeal Joint Degenerative Changes on Functional Outcomes Following Hallux Valgus Correction

2020 ◽  
Vol 5 (4) ◽  
pp. 2473011420S0017
Author(s):  
Daniel Corr ◽  
Ryan G. Rogero ◽  
Andrew Fisher ◽  
Joseph T. O’Neil ◽  
Daniel J. Fuchs ◽  
...  
Keyword(s):  
Hallux Valgus ◽  
Functional Outcomes ◽  
Proximal Phalanx ◽  
Metatarsal Head ◽  
Degenerative Changes ◽  
Foot And Ankle ◽  
First Metatarsophalangeal Joint ◽  
Pain Scores ◽  
Exposed Bone ◽  
Arthritic Changes

Category: Bunion; Midfoot/Forefoot Introduction/Purpose: Previous studies have documented the prevalence of 1st metatarsophalangeal (MTP) joint arthritis in the setting of hallux valgus, with the articulation between the metatarsal head and the sesamoids being particularly vulnerable. However, little is known as to whether such degenerative changes of the metatarsal head-sesamoid articulation have any influence on postoperative functional and pain scores following hallux valgus correction. The purpose of this study is to determine the influence of degenerative changes of the 1st metatarsal head on outcomes at 2 years postoperatively. Methods: Patients underwent correction of a hallux valgus deformity from 2016-2017 by a single fellowship trained foot and ankle surgeon. Degenerative changes were classified by dividing the articular surface of the metatarsal head into 6 zones: zones 1 through 4 represented the surface articulating with the base of the proximal phalanx, while zones 5 and 6 represented the plantar aspect. Cartilage loss in each zone was graded from 0-2, with 0 representing the absence of arthritis, 1 indicating fissures without exposed bone, and 2 representing degenerative changes with exposed bone. Scoring was performed via direct visualization during the procedure. At 2 years postoperatively, patients were contacted to complete the Foot and Ankle Ability Measure (FAAM) Activities of Daily Living (ADL) and Sports subscales and Visual Analog Scale (VAS) for pain. Spearman’s correlations and one-way analysis of variance (ANOVA) were performed to determine if degree of arthritis had any influence on outcomes. Results: One hundred and forty-one patients (87.9% female) with both intraoperative arthritic grading and 2-year functional outcomes were included. At a mean of 25.4 (range, 23.0-34.8) months postoperatively, patients reported a mean (+- standard deviation) FAAM-ADL of 88.9 +- 17.3, FAAM-Sport of 77.3 +- 26.0, and VAS pain of 20.8 +- 27.1. Arthritis in zone 2 (r=0.20, p= 0.027) was found to be positively correlated with FAAM-Sport scores. ANOVA revealed those with a total arthritis grade of 0 or 2 or more in zones 1-4 had a significantly greater reduction in VAS pain scores (means of -35.1 and -37.7, respectively) than those with a grade of 1 (mean: -14.3) (p=0.008). Conclusion: Patients demonstrated a significant influence of arthritis on 2-year functional outcomes following HV correction, with higher levels of degenerative changes in zone 2 generally associated with better functional outcomes. Patients with more severe arthritic changes in zones 1-4 and those whose arthritic changes were localized solely to zones 5 and 6 demonstrated greater pain relief than those with mild degenerative changes. While these findings were unexpected, it demonstrates that those with more pronounced arthritis may benefit more from surgical correction of HV. Furthermore, surgeon intraoperative evaluation of arthritis may allow for improved counseling of patients regarding expected postoperative functional improvement.

Evaluation of Cartilage in the Wrist using Magnetic Resonance Imaging

2020 ◽  
Vol 16 (3) ◽  
pp. 170-177
Author(s):  
Wesley N. Sivak ◽  
Joseph E. Imbriglia
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Resonance ◽  
Wrist Arthroscopy ◽  
Resonance Imaging ◽  
Joint Surfaces ◽  
Articular Cartilage Surface ◽  
Small Joint ◽  
Magnetic Resonance Imaging Mri ◽  
Clinical Conditions ◽  
Accurate Imaging

Wrist pain is a common patient complaint with a myriad of clinical conditions that can explain the underlying cause. Short of wrist arthroscopy, no technique other than formal wrist arthrotomy exists for direct examination of the hyaline cartilage coating the articular surfaces of the carpal bones. Magnetic resonance imaging (MRI) has been proven accurate in evaluating joint surfaces of large joints such as the shoulder, hip, and knee with articular cartilage surface thickness is in excess of 1 mm. However, in the carpus the thickness of the cartilage and the contours present have precluded accurate imaging. Advances in MRI technology over the last several decades are now making imaging of small joint surfaces, such as the carpus, an area worth revisiting. Herein we provide a review of these efforts with a specific focus on the evaluation of the wrist.

scholarly journals Anatomy of the Intermetatarsal Facets of the Fourth and Fifth Metatarsals

2021 ◽  
Vol 6 (1) ◽  
pp. 247301142097570
Author(s):  
Mossub Qatu ◽  
George Borrelli ◽  
Christopher Traynor ◽  
Joseph Weistroffer ◽  
James Jastifer
Keyword(s):  
Articular Cartilage ◽  
Digital Imaging ◽  
Articular Surface ◽  
Implant Design ◽  
Joint Surface ◽  
Fracture Classification ◽  
Articular Damage ◽  
Metatarsal Fracture ◽  
Metatarsal Fractures ◽  
The Mean

Background: The intermetatarsal joint between the fourth and fifth metatarsals (4-5 IM) is important in defining fifth metatarsal fractures. The purpose of the current study was to quantify this joint in order to determine the mean cartilage area, the percentage of the articulation that is cartilage, and to give the clinician data to help understand the joint anatomy as it relates to fifth metatarsal fracture classification. Methods: Twenty cadaver 4-5 IM joints were dissected. Digital images were taken and the articular cartilage was quantified by calibrated digital imaging software. Results: For the lateral fourth proximal intermetatarsal articulation, the mean area of articulation was 188 ± 49 mm2, with 49% of the area composed of articular cartilage. The shape of the articular cartilage had 3 variations: triangular, oval, and square. A triangular variant was the most common (80%, 16 of 20 specimens). For the medial fifth proximal intermetatarsal articulation, the mean area of articulation was 143 ± 30 mm2, with 48% of the joint surface being composed of articular cartilage. The shape of the articular surface was oval or triangular. An oval variant was the most common (75%, 15 of 20 specimens). Conclusion: This study supports the notion that the 4-5 IM joint is not completely articular and has both fibrous and cartilaginous components. Clinical Relevance: The clinical significance of this study is that it quantifies the articular surface area and shape. This information may be useful in understanding fifth metatarsal fracture extension into the articular surface and to inform implant design and also help guide surgeons intraoperatively in order to minimize articular damage.

Multiplanar Correction of the Lesser Digital Deviation and Indirect Plantar Plate Rupture Repair Using a Braided Polyethylene Nylon Suture: A Technique Guide

2017 ◽  
Vol 10 (6) ◽  
pp. 551-554 ◽  
Author(s):  
Cody D. Blazek ◽  
Roberto A. Brandão ◽  
Jeffrey M. Manway ◽  
Patrick R. Burns
Keyword(s):  
Sagittal Plane ◽  
Digital Pathology ◽  
Metatarsophalangeal Joint ◽  
Metatarsal Head ◽  
Foot And Ankle ◽  
Dorsal Approach ◽  
Plantar Plate ◽  
Direct Repair ◽  
Nylon Suture ◽  
A New Technique

Forefoot and lesser digital pathology continues to be a challenging area of surgical correction for foot and ankle surgeons. Many techniques for the correction of digital deformities secondary to plantar plate rupture, regardless of planal dominance, have been described including direct repair and metatarsal shortening osteotomies for repair. The authors present a new technique for multiplanar correction of deformed lesser digits without direct repair of the plantar plate rupture utilizing a specialty suture. The technique utilizes a braided synthetic polyethylene Nylon suture, which has been traditionally used for open or arthroscopic shoulder labrum repair, for the stabilization of the lesser metatarsophalangeal joint. This novel technique guide for the correction of transverse and sagittal plane deformities of the digit at the metatarsophalangeal joint negates the need for a plantar incisional approach for plantar plate repair or metatarsal head osteotomy from a dorsal approach with augmented stabilization. Levels of Evidence: Level V: Expert opinion

scholarly journals Morphometric evaluation of features of remodeling of chondrocites of joint surfaces of temporomandibular joint of experimental animals in hyperglycemia

2021 ◽  
Vol 11 (6) ◽  
pp. 137-142
Author(s):  
Mykhailo Hnatiuk ◽  
Lesia Rubas
Keyword(s):  
Temporomandibular Joint ◽  
Structural Changes ◽  
Articular Surface ◽  
White Male ◽  
Relative Volume ◽  
Male Rats ◽  
Intercellular Substance ◽  
Temporal Fossa ◽  
Articular Surfaces ◽  
Joint Surfaces

Aim: to study morphometrically the peculiarities of remodeling of chondrocytes of the articular surfaces of the temporomandibular joint in hyperglycemia.Materials and methods: Quantitative morphological methods were used to study diameters of chondrocytes and their nuclei, nuclear-cytoplasmic relationship in these cells, relative volume of damaged chondrocytes, intercellular-chondrocytic relationship in mature chondrocytes of the articular surfaces of the temporomandibular joint of 45 laboratory mature white male rats with simulated diabetes.Results: A comprehensive analysis of the morphometric parameters presented in the article showed that they did not differ in the articular surfaces of the temporal fossa and mandibular head of the intact temporomandibular joint. The expressed structural changes of chondrocytes were revealed at a monthly and a two-month diabetic arthropathy of this joint.Conclusions: Proceeded studies and obtained results suggest that prolonged hyperglycemia leads to diabetic arthropathy of the TMJ, which is characterized by atrophy of chondrocytes, violation of nuclear-cytoplasmic relationships, an increase in the relative volume of damaged chondrocytes and volume of intercellular substance. The detected changes in quantitative morphological parameters depended on the duration of hyperglycemia and dominated in the cartilaginous tissue of the articular surface of the mandibular head.

Sign in / Sign up

Export Citation Format

Share Document