The document discusses the functional anatomy and evaluation of the hand in occupational therapy. It provides details on:
1) The functional anatomy of the hand including bones, joints, and optimal positioning for function.
2) Types of prehension (pinch patterns) and grasps used to manipulate objects.
3) Methods for evaluating hand function including range of motion, strength, sensation, and dexterity tests.
4) Assessment of edema in the hand using volumetric measures or circumference measurements.
The McKenzie method was developed in 1960’s by Robin McKenzie , a physical therapist in new Zealand and A central tenet of McKenzie Method is that self-healing and self-treatment are important for patient’s pain relief and rehabilitation.
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Brian Mulligan described novel concept of the simultaneous application of therapist applied accessory mobilizations and patient generated active movements
it is another taping technique which inhibits or control the movement. it is helpful in postural correction and movement pattern correction as well. usually used clinically
Presented an in-service on the evidence behind and the application of thoracic spine manipulation to the Martinsburg VA Medical Center's rehabilitation staff including: 7 PTs, 8 PTAs, 3 OTs, and 4 students.
A goniometer is an instrument that measures the available range of motion at a joint. The art and science of measuring the joint ranges in each plane of the joint are called goniometry. ... The term goniometry is derived from two Greek words, gonia, meaning "angle" and metron, meaning "measurement".
Brian Mulligan described novel concept of the simultaneous application of therapist applied accessory mobilizations and patient generated active movements
it is another taping technique which inhibits or control the movement. it is helpful in postural correction and movement pattern correction as well. usually used clinically
Presented an in-service on the evidence behind and the application of thoracic spine manipulation to the Martinsburg VA Medical Center's rehabilitation staff including: 7 PTs, 8 PTAs, 3 OTs, and 4 students.
A goniometer is an instrument that measures the available range of motion at a joint. The art and science of measuring the joint ranges in each plane of the joint are called goniometry. ... The term goniometry is derived from two Greek words, gonia, meaning "angle" and metron, meaning "measurement".
Pre-Lab Worksheets
Student’s Name
Date Due
Complete the following questions prior to the lab class
.
1. Define:
Kinesiology:
Biomechanics:
Kinetics:
Kinematics:
2. The basic information needed to determine the function of a muscle includes:
3. Fill in the following table by:
A. Listing characteristics that can be observed while examining a person
B. Identifying which sensory modality is used to perceive the characteristic
Characteristics
Sensory Modality
Example: Foot slap while walking
Auditory and visual
4
4. Label
Figures 1-1
and
1-2
as either anatomical position or fundamental position.
Figure 1-1
Figure 1-2
5. When viewing
Figure 1-1
, you are observing the person’s (anterior/ventral or posterior/dorsal) surface.
6. When considered together, the right arm and leg can be referred to as (contralateral or ipsilateral).
7. Using
Figure 1-1
and the descriptive terms listed below, describe the location of the following body segments. Terms may be used more than once.
Medial
Superior
Proximal
Superficial
Anterior
Lateral
Inferior
Distal
Deep
Posterior
A. Tibia: The ___________________ bone of the lower leg
B. Fibula: The ___________________ bone of the lower leg
C. Ribs in relationship to the scapula: ___________
D. The elbow joint is at which end of the humerus? _______________________________
E. The brachialis muscle lies underneath the biceps; therefore, it is ______________ to the biceps.
F. The head is ______________ to the chest.
G. The ________________ end of the tibia is at the knee joint.
H. The great toe is on the ______________ side of the foot.
I. The eyes are _____________ and ____________ to the mouth.
J. The radius is on the ______________ side of the forearm.
K. The ulna is on the ______________ side of the forearm.
L. The scapula is on the ______________ side of the trunk.
M. The shoulder girdle is ________________ to the pelvic girdle.
N. Skin is ________ to muscle.
FIGURE 1-1
FIGURE 1-2
5
8. Match the major bone or feature of the body segment with the descriptive term for that segment.
______ Arm
A. Cervical vertebrae
______ Forearm
B. Chest
______ Hand
C. Pelvis
______ Thigh
D. Radius
______ Leg
E. Femur
______ Foot
F. Fingers
______ Thorax
G. Tibia
______ Abdomen
H. Humerus
______ Neck
I. Toes
9. Name and describe the two types of linear motion, which is also called
translatory motion
.
10. In which type of motion do all the parts move:
A. The same distance:
B. Different distances:
11. In
Figure 1-3
, identify linear motion and angular motion.
FIGURE 1-3
Bicycle rider.
6
12. Match the following joint motion with the correct description. The reference position is the anatomical position unless otherwise indicated. Use each answer only once.
______ Pulling your scapulae together
A. Flexion
______ Moving your leg toward the midline
B. Extension
______ Rolling your arm outward
C. Hyperextensi.
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Notes on Hand Functions_Punita V. Solanki
1. Disclaimer
The occupational therapy undergraduate notes have been prepared by Ms. Punita V. Solanki (Ex-
Assistant Professor, Occupational Therapy School and Centre, Seth G. S. Medical College and
King Edward VII Memorial Hospital, during her teaching tenure) as per the Maharashtra
University of Health Sciences University curriculum requirements, between the years 2001 and
2012 and the references of the textbooks have been listed at the beginning or the end of each
topics. Occupational therapy students are directed to refer the latest editions of the listed
references or additional references to upgrade the latest information for the concerned topics and
keep up-to-date with the latest evidence-based practice literature. However, these notes will be
useful guide for preparing updated notes as per the latest syllabus requirements set by the
concerned university.
For further information may contact
Ms. Punita V. Solanki. MSc (OT); Fellow ACOT, ADCR (Mumbai) ֍ www.orthorehab.in
2. Ms. Punita V. Solanki. Assistant Professor (Occupational Therapy). Notes for First BOTH. October 2009
Revised Syllabus: Fundamentals of Occupational Therapy - II:
Theory: Course Content: No: 7: Hand Function and Evaluation Methods:
a) Functional Anatomy of Hand.
b) Prehension and Grasp Patterns.
c) Grip and Pinch Strength.
d) Functional Evaluation of Hand.
e) Oedema Assessment.
References
1) Occupational Therapy for Physical Dysfunction – Catherine A. Trombly. 4th
Edition 1997 Chapter
6: Evaluation of Biomechanical and Physiological Aspects of Motor Performance. Page No’s: 106-
107, 150-152.
2) Occupational Therapy for Physical Dysfunction - Catherine A. Trombly, Mary Vining Radomski.
5th
Edition 2002 Chapter 4: Assessing Abilities and Capacities: Range of Motion, Strength and
Endurance. Page No’s: 81-82, 128-130 & Chapter 42: Hand Impairments. Page No’s: 931-937.
3) Occupational Therapy: Practice Skills for Physical Dysfunction – Lorraine Williams Pedretti, Mary
Beth Early. 5th
Edition 2001 Chapter 31: Orthotics. Page No’s: 531-540 & Chapter 44: Hand and
Upper Extremity Injuries. Page No’s: 841-843.
4) Willard and Spackman’s Occupational Therapy – Helen L. Hopkins & Helen D. Smith. 8th
Edition
1993 Chapter 18: Functional Restoration: Section 4: Hand Rehabilitation. Page No’s: 678-684.
5) Joint Structure and Function: A Comprehensive Analysis – Cynthia C. Norkin, Pamela K. Levangie.
2nd
Edition 1998 Chapter 9: Wrist and Hand Complex. Page No’s: 290-296.
Functional Anatomy of Wrist and Hand
Wrist Complex (Radiocarpal Joint Structure) is formed by the radius and radio-ulnar disk proximally
and by the scaphoid, lunate and triquetrum distally. Wrist complex is a biaxial joint with 2 degrees of
freedom of motion. The hand consists of 5 digits; or 4 fingers and a thumb. Each digit has a
carpometacarpal (CMC) joint and a metacarpophalangeal (MCP) joint. The fingers each have two
interphalangeal (IP) while the thumb has only one. There are 19 bones distal to the carpals and 19
joints that make up the hand complex. While there are structural similarities between the joints of the
fingers and the joints of the thumb, function differs significantly enough that the fingers shall be
examined separately from the thumb.
The functional position of the wrist and hand is:
1) Wrist complex in slight extension (20°) and slight ulnar deviation (10°).
3. Ms. Punita V. Solanki. Assistant Professor (Occupational Therapy). Notes for First BOTH. October 2009
2) Fingers moderately flexed at the MCP joints (45°), slightly flexed at the PIP joints (30°) and slightly
flexed at the DIP joints and thumb in opposition.
The wrist position optimizes the power of the finger flexors so that hand closure or all hand functions
can be accomplished with the least possible effort.
Prehension and Grasp Patterns
Prehension: is defined as a position of the hand that allows finger and thumb contact and facilitates
manipulation of objects. These are of three types:
a) Lateral Prehension (Pad to Lateral Pinch).
b) Palmar Prehension (Pad to Pad Pinch or Palmar Pinch or Three Jaw Chuck).
c) Tip Prehension (Tip to Tip Pinch).
a) Lateral Prehension (Pad to Lateral Pinch): In lateral prehension the pad of the thumb is
positioned to contact the radial side of either the middle or distal phalanx of the index finger. Most
commonly this pattern of prehension is used in holding an eating utensil and holding and turning a key.
b) Palmar Prehension (Pad to Pad Pinch or Palmar Pinch or Three Jaw Chuck): In Palmar
prehension the thumb is positioned in opposition to the index and long fingers. The important
component of motion in this pattern is thumb rotation, which allows for pad to pad opposition. This
prehension pattern is used in lifting objects from a flat surface such as paper, in holding small objects
as pen, beads, small grains etc and in tying a shoe lace or a bow.
c) Tip Prehension (Tip to Tip Pinch): In tip prehension the IP joint of the thumb and the DIP and PIP
joints of the finger are flexed to facilitate tip to tip prehension. These motions are necessary to pick up
a pin or a coin. Once a pin is in the hand, tip prehension will be converted to palmar prehension to
provide more skin surface area to retain a small object.
Grasp: is defined as a position of the hand that facilitates contact of an object against the palm and the
palmar surface of the partially flexed digits and the thumb is involved in all types of grasps except that
of hook grasp. These are of following types:
a) Cylindrical grasp.
b) Spherical grasp.
c) Hook grasp.
d) Intrinsic plus grasp.
4. Ms. Punita V. Solanki. Assistant Professor (Occupational Therapy). Notes for First BOTH. October 2009
a) Cylindrical grasp: Cylindrical grasp the most common static grasp pattern is used to stabilize
objects against the palm and the fingers, with the thumb acting as an opposing force. This pattern is
assumed for grasping a hammer, pot handle, drinking glass or the handhold on a walker or a crutch.
b) Spherical grasp: Also called ball grasp, this pattern is assumed for holding a round object such as a
ball or apple. It differs from cylindrical grasp primarily in the positioning of the fourth and fifth digits.
In spherical grasp the two ulnar digits are supported in greater extension to allow a more open hand
posture whereas in cylindrical grasp the two ulnar metacarpals are held in greater flexion.
c) Hook grasp: Hook grasp is the only prehension pattern that does not include the thumb to supply
opposition. The MCP joints are held in extension and the DIP and PIP joints are held in flexion of all
the four digits. This is the attitude the hand assumes when holding the handle of a shopping bag, a pail
or a briefcase.
d) Intrinsic plus grasp: Intrinsic plus grasp is characterized by the positioning of all the MCP joints
of the fingers in flexion, the DIP and PIP joints in full extension and the thumb in opposition to the
third and fourth fingers. This pattern is used in grasping and holding large flat objects such as books,
folders, files or plates etc.
Grip and Pinch Strength: The standard methods of measurement are recommended by the American
Society of Hand Therapists (ASHT) 1981. The subject should be seated with his shoulder adducted
and neutrally rotated, elbow flexed at 90°, the forearm in neutral position and the wrist in 0° to 30°
extension and between 0° to 15° of ulnar deviation. The hip and knees when seated should be at 90° of
flexion with feet flat on the ground. Three trials are taken of each hand with a 2-3 minute rest between
trials and the score is the average of the three trials.
Grip strength assessments are done by
a) Jamar Dynamometer (Set at the second position from all of 5 positions as per ASHT): It is a
reliable, valid and an accurate method of grip strength assessment.
b) Vigorometer: is an acceptable alternative hand strength measuring device which is commercially
available for patients whose diagnoses contraindicate stress on joints and or skin.
c) Adapted Sphygmomanometer: is an alternative method of grip strength measurement used for
rheumatoid arthritis patients.
d) The power grip attachment of the Baltimore Therapeutic Equipment Work Simulator.
5. Ms. Punita V. Solanki. Assistant Professor (Occupational Therapy). Notes for First BOTH. October 2009
Pinch Strength (All 3 types): is tested using a pinch gauge or a pinch meter. The pinch gauge made by
B and L Engineering has been found to be the most accurate. As with the grip dynamometer, three
successive trials should be obtained and compared bilaterally.
These instruments are calibrated and set at 0 to start. The readings are noted in kilograms or pounds.
Functional Evaluation of Hand
Hand evaluation includes general physical examination of hand for pain, tenderness, wounds, scars etc,
assessment of range of motion, manual muscle strength testing, oedema assessment, grip and pinch
strength measurement, sensibility, dexterity and hand function.
Sensibility: The Semmes Weinstein monofilaments are used to assess pressure threshold. The two
point discriminator is used to assess density of receptors for two point discrimination. Dellon’s
modification of Moberg Pickup test is a functional hand function test for assessment of sensations.
Dexterity and Hand Function Tests
a) Jebson Taylor Hand Function test.
b) Purdue Pegboard test.
c) Minnesota Rate of Manipulation test (MRMT).
d) Crawford’s Small Parts Dexterity test.
e) Box and Block test.
f) Nine Hole Peg test.
g) O’Connor’s Dexterity test.
Oedema Assessment: Oedema is an abnormal accumulation of interstitial fluid beneath the skin, or in
one or more cavities of the body. Hand volume is measured to assess the presence of extracellular or
intracellular edema.
Methods of assessment of oedema are:
1) Volumetric measures by Volumeter.
2) Circumferential measures by circumference tape or jeweller’s ring size standards or an external
calliper.
Volumeter: Volumetric measures document changes in the mass of a body part by use of water
displacement. It is most often used to measure hand oedema. The voltmeter has been shown to be
accurate to 10 ml, when used in a prescribed manner. It consists of a water vessel with a spill over
spout near the top of the water level and a graduated beaker.
6. Ms. Punita V. Solanki. Assistant Professor (Occupational Therapy). Notes for First BOTH. October 2009
The evaluation is performed as follows:
1) A plastic voltmeter is filled and allowed to empty into a large beaker until the water reaches the
spout level. The beaker is then emptied and dried thoroughly.
2) The patient is instructed to immerse the hand in the plastic voltmeter, being careful to keep the hand
in the mid position.
3) The hand is lowered until it rests gently between the middle and ring fingers on the dowel rod. It is
important that the hand not press onto the rod.
4) The hand remains still until no more water drips into the beaker.
5) The water is poured into a graduated cylinder or a beaker. The cylinder or a beaker is placed on a
level surface and a reading is made in millilitres.
An oedematous hand displaces more water than an unswollen hand so that a lower reading is
considered an improvement. Sitting or standing significantly affects the scores of volumetric
measurement so it is important to standardize the administration procedure.
Circumferential measures by circumference tape or jeweller’s ring size standards or an external
calliper: is a method of assessing oedema of an individual finger or a joint. Circumferential
measurement is quick to perform and provides a good alternative when it is not possible to use a
voltmeter. Be consistent with measuring tape, placement and tension. An external calliper is an
alternative method of assessing smaller diameter areas. Again consistent instrument placement and
tension are important for maintaining accuracy.