Imperial College London

ProfessorAndrewAmis

Faculty of EngineeringDepartment of Mechanical Engineering

Professor
 
 
 
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Contact

 

+44 (0)20 7594 7062a.amis

 
 
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Assistant

 

Ms Fabienne Laperche +44 (0)20 7594 7033

 
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Location

 

713City and Guilds BuildingSouth Kensington Campus

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Summary

 

Publications

Publication Type
Year
to

345 results found

RADFORD WJP, AMIS AA, 1990, BIOMECHANICS OF A DOUBLE PROSTHETIC LIGAMENT IN THE ANTERIOR CRUCIATE DEFICIENT KNEE, JOURNAL OF BONE AND JOINT SURGERY-BRITISH VOLUME, Vol: 72, Pages: 1038-1043, ISSN: 0301-620X

JOURNAL ARTICLE

AMIS AA, 1989, ANTERIOR CRUCIATE LIGAMENT REPLACEMENT - KNEE STABILITY AND THE EFFECTS OF IMPLANTS, JOURNAL OF BONE AND JOINT SURGERY-BRITISH VOLUME, Vol: 71, Pages: 819-824, ISSN: 0301-620X

JOURNAL ARTICLE

GIDDINS GEB, WADE PJF, AMIS AA, 1989, PRIMARY NERVE REPAIR - STRENGTH OF REPAIR WITH DIFFERENT GAUGES OF NYLON SUTURE MATERIAL, JOURNAL OF HAND SURGERY-BRITISH AND EUROPEAN VOLUME, Vol: 14B, Pages: 301-302, ISSN: 0266-7681

JOURNAL ARTICLE

Giddins GE, Wade PJ, Amis AA, 1989, Primary nerve repair: strength of repair with different gauges of nylon suture material., J Hand Surg Br, Vol: 14, Pages: 301-302, ISSN: 0266-7681

Cadaveric median nerves were divided and repaired with interrupted epineural sutures, as in normal clinical practice, using three different gauges of nylon monofilament material. Tensile testing of the nerve repairs showed that, of these three gauges, 9/0 (0.3 metric) sutures were preferable: gap formation at the repair site occurred at the highest force. Finer gauge (10/0) sutures snapped at a lower force, while thicker (8/0) sutures were less consistent and pulled out of the nerve tissue.

JOURNAL ARTICLE

WADE PJF, WETHERELL RG, AMIS AA, 1989, FLEXOR TENDON REPAIR - SIGNIFICANT GAIN IN STRENGTH FROM THE HALSTED PERIPHERAL SUTURE TECHNIQUE, JOURNAL OF HAND SURGERY-BRITISH AND EUROPEAN VOLUME, Vol: 14B, Pages: 232-235, ISSN: 0266-7681

JOURNAL ARTICLE

WETHERELL RG, AMIS AA, HEATLEY FW, 1989, MEASUREMENT OF ACETABULAR EROSION - THE EFFECT OF PELVIC ROTATION ON COMMON LANDMARKS, JOURNAL OF BONE AND JOINT SURGERY-BRITISH VOLUME, Vol: 71, Pages: 447-451, ISSN: 0301-620X

JOURNAL ARTICLE

Wade PJ, Wetherell RG, Amis AA, 1989, Flexor tendon repair: significant gain in strength from the Halsted peripheral suture technique., J Hand Surg Br, Vol: 14, Pages: 232-235, ISSN: 0266-7681

A biomechanical study in vitro has evaluated a new modification of the core and peripheral suture technique for flexor tendon repair. Groups of repairs were conducted in cadaver tendons, using a core suture alone, a core suture with a simple running surface suture and a new modification involving a 'Halsted' horizontal mattress technique for the peripheral stitch. The Halsted modification increased the load at which a visible gap formed by 93%, the load at which a 2 mm gap formed by 77%, and the maximum strength by 89%. This increase was due to the technique; it did not depend on the suture material used. The bulk of the tendon repair was not significantly greater with the Halsted modification.

JOURNAL ARTICLE

AMIS AA, 1988, THE STRENGTH OF ARTIFICIAL LIGAMENT ANCHORAGES - A COMPARATIVE EXPERIMENTAL-STUDY, JOURNAL OF BONE AND JOINT SURGERY-BRITISH VOLUME, Vol: 70, Pages: 397-403, ISSN: 0301-620X

JOURNAL ARTICLE

AMIS AA, JONES MM, 1988, THE INTERIOR OF THE FLEXOR TENDON SHEATH OF THE FINGER - THE FUNCTIONAL-SIGNIFICANCE OF ITS STRUCTURE, JOURNAL OF BONE AND JOINT SURGERY-BRITISH VOLUME, Vol: 70, Pages: 583-587, ISSN: 0301-620X

JOURNAL ARTICLE

AMIS AA, KEMPSON SA, CAMPBELL JR, MILLER JHet al., 1988, ANTERIOR CRUCIATE LIGAMENT REPLACEMENT - BIOCOMPATIBILITY AND BIOMECHANICS OF POLYESTER AND CARBON-FIBER IN RABBITS, JOURNAL OF BONE AND JOINT SURGERY-BRITISH VOLUME, Vol: 70, Pages: 628-634, ISSN: 0301-620X

JOURNAL ARTICLE

JAMES SE, HEATLEY FW, AMIS AA, 1988, THE MEASUREMENT OF PATELLAR LAXITY, JOURNAL OF BONE AND JOINT SURGERY-BRITISH VOLUME, Vol: 70, Pages: 496-496, ISSN: 0301-620X

JOURNAL ARTICLE

JONES MM, AMIS AA, 1988, THE STRUCTURE OF THE DIGITAL FIBROUS FLEXOR SHEATH, JOURNAL OF ANATOMY, Vol: 158, Pages: 220-220, ISSN: 0021-8782

JOURNAL ARTICLE

JONES MM, AMIS AA, 1988, THE FIBROUS FLEXOR SHEATHS OF THE FINGERS, JOURNAL OF ANATOMY, Vol: 156, Pages: 185-196, ISSN: 0021-8782

JOURNAL ARTICLE

KLOSOK JK, ANDREWS MG, AMIS AA, 1988, DEVELOPMENT OF BONE-CEMENT WITH IMPROVED MECHANICAL-PROPERTIES USING FIBER REINFORCEMENT, JOURNAL OF BONE AND JOINT SURGERY-BRITISH VOLUME, Vol: 70, Pages: 496-496, ISSN: 0301-620X

JOURNAL ARTICLE

SHAHGALDI BF, AMIS AA, HEATLEY FW, 1988, USE OF MENISCAL XENOGRAFTS IN REPAIR OF OSTEOCHONDRAL DEFECTS, JOURNAL OF BONE AND JOINT SURGERY-BRITISH VOLUME, Vol: 70, Pages: 152-152, ISSN: 0301-620X

JOURNAL ARTICLE

WADE PJF, WETHERELL RG, AMIS AA, 1988, THE RELATIONSHIP BETWEEN SUTURE TECHNIQUE AND GAP FORMATION - AN EXPERIMENTAL-STUDY IN CADAVER FLEXOR TENDONS, JOURNAL OF BONE AND JOINT SURGERY-BRITISH VOLUME, Vol: 70, Pages: 155-155, ISSN: 0301-620X

JOURNAL ARTICLE

ALLEN PR, AMIS AA, JONES MM, HEATLEY FWet al., 1987, EVALUATION OF PRESERVED BOVINE TENDON XENOGRAFTS - A HISTOLOGICAL, BIOMECHANICAL AND CLINICAL-STUDY, BIOMATERIALS, Vol: 8, Pages: 146-152, ISSN: 0142-9612

JOURNAL ARTICLE

AMIS AA, 1987, VARIATION OF FINGER FORCES IN MAXIMAL ISOMETRIC GRASP TESTS ON A RANGE OF CYLINDER DIAMETERS, JOURNAL OF BIOMEDICAL ENGINEERING, Vol: 9, Pages: 313-320, ISSN: 0141-5425

JOURNAL ARTICLE

AMIS AA, 1987, THE EFFECTS OF ARTIFICIAL LIGAMENT LAXITY AND STIFFNESS ON STABILITY AND MOVEMENT OF THE KNEE - AN INVITRO BIOMECHANICAL STUDY, JOURNAL OF BONE AND JOINT SURGERY-BRITISH VOLUME, Vol: 69, Pages: 161-161, ISSN: 0301-620X

JOURNAL ARTICLE

AMIS AA, BROMAGE JD, LARVIN M, 1987, FATIGUE FRACTURE OF A FEMORAL SLIDING COMPRESSION SCREW-PLATE DEVICE AFTER BONE UNION, BIOMATERIALS, Vol: 8, Pages: 153-157, ISSN: 0142-9612

JOURNAL ARTICLE

ELIAS K, AMIS AA, SETCHELL DJ, 1987, THE MAGNITUDE AND PATTERN OF CUTTING FORCES, JOURNAL OF DENTAL RESEARCH, Vol: 66, Pages: 851-851, ISSN: 0022-0345

JOURNAL ARTICLE

CAMPBELL JR, KEMPSON S, AMIS AA, MILLER JHet al., 1986, A COMPARATIVE-STUDY OF ANTERIOR CRUCIATE LIGAMENT REPLACEMENT USING EITHER CARBON OR POLYESTER FIBERS, JOURNAL OF BONE AND JOINT SURGERY-BRITISH VOLUME, Vol: 68, Pages: 841-842, ISSN: 0301-620X

JOURNAL ARTICLE

MILLER JH, KAYE JC, AMIS AA, 1986, VITALLIUM REPLACEMENT OF THE RADIAL HEAD IN TRAUMA, JOURNAL OF BONE AND JOINT SURGERY-BRITISH VOLUME, Vol: 68, Pages: 665-666, ISSN: 0301-620X

JOURNAL ARTICLE

ALLEN PR, AMIS AA, JONES MM, HEATLEY FWet al., 1985, BOVINE GLUTERALDEHYDE-TREATED TENDON AS A GRAFT MATERIAL - A CLINICAL AND LABORATORY STUDY, JOURNAL OF BONE AND JOINT SURGERY-BRITISH VOLUME, Vol: 67, Pages: 159-159, ISSN: 0301-620X

JOURNAL ARTICLE

AMIS AA, CAMPBELL JR, MILLER JH, 1985, THE POSTOPERATIVE STRENGTH VARIATIONS OF CARBON OR POLYESTER FIBER TENDON REPLACEMENTS, JOURNAL OF BONE AND JOINT SURGERY-BRITISH VOLUME, Vol: 67, Pages: 159-159, ISSN: 0301-620X

JOURNAL ARTICLE

AMIS AA, CAMPBELL JR, MILLER JH, 1985, STRENGTH OF CARBON AND POLYESTER FIBER TENDON REPLACEMENTS - VARIATION AFTER OPERATION IN RABBITS, JOURNAL OF BONE AND JOINT SURGERY-BRITISH VOLUME, Vol: 67, Pages: 829-834, ISSN: 0301-620X

JOURNAL ARTICLE

DAWKINS GPC, AMIS AA, 1985, A FUNCTIONAL-STUDY OF THE STRUCTURE OF THE ANTERIOR CRUCIATE LIGAMENT, RELATED TO KNEE STABILITY, INJURY MECHANISMS AND PROSTHETIC LIGAMENT RECONSTRUCTIONS, JOURNAL OF BONE AND JOINT SURGERY-BRITISH VOLUME, Vol: 67, Pages: 844-844, ISSN: 0301-620X

JOURNAL ARTICLE

MILLER JH, WRIGHT V, BURTON K, AMIS AAet al., 1985, THE CORRELATION OF A FUNCTIONAL-STUDY OF THE RHEUMATOID ELBOW WITH THE X-RAY-PATTERNS OF DISEASE AND ITS APPLICATION TO ELBOW ARTHROPLASTY, JOURNAL OF BONE AND JOINT SURGERY-BRITISH VOLUME, Vol: 67, Pages: 154-154, ISSN: 0301-620X

JOURNAL ARTICLE

PRING DJ, AMIS AA, COOMBS RRH, 1985, THE MECHANICAL-PROPERTIES OF HUMAN FLEXOR TENDONS IN RELATION TO ARTIFICIAL TENDONS, JOURNAL OF HAND SURGERY-BRITISH AND EUROPEAN VOLUME, Vol: 10B, Pages: 331-336, ISSN: 0266-7681

JOURNAL ARTICLE

Pring DJ, Amis AA, Coombs RR, 1985, The mechanical properties of human flexor tendons in relation to artificial tendons., J Hand Surg Br, Vol: 10, Pages: 331-336, ISSN: 0266-7681

The continuation of an unacceptable failure rate with tendon repair or grafting procedures, largely due to adhesions, suggested that an artificial flexor tendon could be an attractive alternative. A literature search found no published data of the mechanical properties of fresh human finger flexor tendons, so a study of the strength and extensibility of 153 tendons was carried out. The bone insertion strength of twenty middle finger tendons was also examined. The results showed that an artificial tendon should have a strength of approximately 1500N, and that it should extend 13% at that load, an elongation of 26mm for a tendon 200mm long. The insertion strength was less than a half of the tendon strength. This data will allow an artificial flexor tendon to be designed with sufficient strength and the correct elastic properties to allow its function to integrate reliably with natural tendons in adjacent fingers.

JOURNAL ARTICLE

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