Biomedical subjects

J T Barmakian

Publications and source records attributed to J T Barmakian.

3 recordsLinked to original sources

PubMed1994

Comparison of a suture technique with the modified Kessler method: resistance to gap formation.

We performed an in vitro study using canine flexor tendons to compare the tensile properties of a suture technique for flexor tendon repair with the standard modified Kessler technique. The technique employs a central wire loop that connects the two transverse limbs of the modified Kessler suture. Both techniques were studied with and without a Lembert epitendinous stitch. The technique combined with an epitendinous suture provided the strongest resistance to gap formation, and its load at gap initiation was 100% greater than the load in tendons repaired with the modified Kessler and an epitendinous suture. Because of its increased resistance to gap formation, this suture technique may provide a safer margin for controlled early active motion after flexor tendon repair.

Animals↗

PubMed1992

Proteus syndrome.

Proteus syndrome is a rare congenital disorder that is characterized by a wide variety of deformities including macrodactyly. Skin and soft tissue lesions are common; they may increase in size as the child develops and may assume tremendous proportions. The syndrome is often mistaken for other more commonly recognized conditions such as neurofibromatosis. Unlike neurofibromatosis, the soft tissue masses in Proteus syndrome are not nerve tumors but, rather, are hamartomas composed primarily of lipomatous tissue. The hand surgeon should be aware of this condition when evaluating a child with macrodactyly.

Diagnosis, Differential↗

PubMed1992

Anatomy of the joints of the thumb.

The three joints of the thumb differ markedly with respect to anatomy and function. Each contributes its own anatomic personality, and when functioning together, they allow the thumb to move with remarkable versatility and grace yet with the stability necessary to perform a wide variety of tasks. The carpometacarpal and interphalangeal joints allow for thumb mobility while the metacarpophalangeal joint provides stability. Thumb rotation primarily takes place at the CMC joint, although the MP and IP joints each contribute a small amount of pronation with flexion. Although much is known about the static structural anatomy of the thumb, its dynamic anatomy requires further investigation. The fluid, elegant and powerful movements of the thumb are complex, and defining the contributions of the various individual structures is difficult. Hopefully, future investigators using newer techniques will unravel the complexities of the functional anatomy of this remarkable digit.

Biomechanical Phenomena↗