Michael B Mechlin, M.D.

Magnetic resonance imaging evaluation of the ulnar collateral ligament in young baseball pitchers less than 18 years of age
Jazrawi, Laith M; Leibman, Matt; Mechlin, Mike; Yufit, Pavel; Ishak, Charbel; Schweitzer, Mark; Rokito, Andrew
2006 ;63(3-4):105-107, Bulletin (Hospital for Joint Diseases)
INTRODUCTION: It has been shown that the asymptomatic, dominant elbow of professional baseball pitchers can demonstrate magnetic resonance (MR) imaging signal abnormalities of the ulnar collateral ligament (UCL) consistent with a strain. The purpose of this study was to determine if younger, asymptomatic, adolescent baseball pitchers exhibit similar signal abnormalities in the UCL. METHODS: Magnetic resonance images of both elbows of 14 asymptomatic, young male baseball pitchers (ranging in age from 12 to 20 years) were performed on an outpatient basis using a 1.5-T Sigma MRI unit with a dedicated extremity coil to obtain T1 and T2 coronal and axial images which were subsequently evaluated by a musculoskeletal radiologist. Chronic tears of the UCL were suspected if the signal was attenuated or absent. Magnetic resonance images of the UCL were also evaluated for high-intensity signal or thinning. Morphologic changes such as complete tears, avulsions or thickening were identified. The images were classified into 4 grades from 0 to 3 depending on the degree of signal abnormality. RESULTS: No discrete tears were found in any of the subjects. For the dominant pitching arm, 4 of 14 subjects had increased thickness of the ulnar collateral ligament, 3 of 14 demonstrated Grade 1 changes, and 11 of 14 demonstrated no abnormal signal within the ligament. No focal tears were present in any of the subjects. Contralateral elbows in 13 of 14 patients demonstrated Grade 0 signals with 1 patient demonstrating morphological thickening of the ligament without increased signal. DISCUSSION: Signal abnormalities in the throwing elbow of asymptomatic, adolescent pitchers were uncommon. These pitchers may not have experienced sufficient pitching time to develop changes in the UCL
— id: 69065, year: 2006, vol: 63, page: 105, stat: Journal Article,

Normal variants and diseases of the peroneal tendons and superior peroneal retinaculum: MR imaging features
Wang, Xiao-Tian; Rosenberg, Zehava Sadka; Mechlin, Michael B; Schweitzer, Mark E
2005 May-Jun;25(3):587-602, Radiographics
Diseases of the peroneal tendons and superior peroneal retinaculum (SPR) are frequently underdiagnosed causes of lateral ankle pain and instability. Common diseases include tenosynovitis, rupture, and dislocation of the peroneal tendons as well as injuries to the SPR. Many anatomic variants, such as a flat or convex retromalleolar fibular groove, hypertrophy of the peroneal tubercle, an accessory peroneus quartus muscle, a low-lying peroneus brevis muscle belly, or an os peroneum, may be associated with or predispose to lateral ankle disease. Magnetic resonance (MR) imaging is excellent for detecting soft-tissue and bone variants and abnormalities related to the lateral ankle. Knowledge of the MR imaging appearances of these entities aids radiologists in making the precise diagnosis of disorders of the peroneal tendons and SPR. Pitfalls and normal variants of the peroneal tendons, including magic angle phenomenon, pseudosubluxation of the peroneus brevis tendon, a bifurcated or mildly crescentic peroneus brevis tendon, insertion of the peroneus quartus tendon into the peroneus brevis tendon, and the presence of an os peroneum are important to recognize. It is also useful to be familiar with the MR imaging appearances of SPR injuries, which can be an overlooked but treatable cause of lateral ankle pain and instability
— id: 56114, year: 2005, vol: 25, page: 587, stat: Journal Article,

Computed tomography and ultrasound of the traumatized and acutely ill patient
Grumbach K; Mechlin MB; Mintz MC
1985 Aug;3(3):607-624, Emergency medicine clinics of North America
CT and ultrasound have become invaluable diagnostic tools in the radiologic evaluation of the traumatized and acutely ill patient. CT is the imaging modality of choice in blunt abdominal trauma, retroperitoneal injury and some types of pelvic injury. Ultrasound plays an important role in the evaluation of patients presenting with right upper quadrant pain, renal failure, scrotal pain and enlargement, or pain and bleeding during pregnancy. CT should be reserved for patients with complicated pancreatitis or some forms of renal infection. Thus, CT and ultrasound are important imaging modalities in the work-up of many patients treated by the emergency room physician
— id: 23230, year: 1985, vol: 3, page: 607, stat: Journal Article,

Giant cell tumor of tarsal bones. Report of three cases and review of the literature
Mechlin MB; Kricun ME; Stead J; Schwamm HA
1984 ;11(4):266-270, Skeletal radiology
Thirty-five cases of giant cell tumor (GCT) have been reported involving tarsal bones. Most occurred in the talus and calcaneus. We are adding three cases
— id: 23231, year: 1984, vol: 11, page: 266, stat: Journal Article,