Colles’ fracture is an extra-articular distal radius fracture described by Abraham Colles in 1814. Colles’ fracture is a common fracture presentation in the orthopedic emergency department. It commonly affects the elderly female population. There is a direct relationship between osteoporosis and Colles’ fracture. Colles described a fracture of the distal radius, that is, within 2.5 cm above the wrist joint line, dorsally angulated and displaced, radially angulated and displaced, impacted and supinated, with or without distal radio-ulnar joint disruption [rx]. Fractures of the distal radius were considered uncomplicated injuries in the past. Initially, Abraham Colles treated these fractures when there was no radiography, aseptic surgery, or anesthesia, and the amount of disability following malunion was accepted. Malunion results in pain, mid-carpal instability, and post-traumatic arthritis [rx–rx].
Mechanism of Colles’ Fracture
Most of the fractures are caused by a fall on the outstretched hand with the wrist in dorsiflexion. The form and severity of fracture of the distal radius as well as the concomitant injury of disco-ligament structures of the wrist also depend on the position of the wrist at the moment of hitting the ground. The width of this angle influences the localization of the fracture. Pronation, supination, and abduction determine the direction of the force and the compression of the carpus and different appearances of ligament injuries.[rx]
The radius initially fails in tension on the volar aspect, with the fracture progressing dorsally where bending forces induce compressive stresses, resulting in dorsal comminution. Cancellous impaction of the metaphysis further compromises dorsal stability. Additional shearing forces influence the injury pattern, resulting in articular surface involvement.[rx]
Types of Colles’ Fracture
Melone classification
The system that comes closest to directing treatment has been devised by Melone. This system breaks distal radius fractures down into 4 components: radial styloid, dorsal medial fragment, volar medial fragment, and radial shaft. The two medial fragments (which together create the lunate fossa) are grouped as the medial complex.[rx]
Type | Description | Note |
---|---|---|
I | No displacement of a medial complex
No comminution. |
Fracture is stable after closed reduction |
II | Unstable depression fracture of lunate fossa (“die-punch”)
Moderate/severe medial complex displacement. Comminution of dorsal and volar cortices. |
IIA – Irreducible, closed fracture.
IIB – Irreducible, closed due to impaction |
III | Type II fracture plus a ‘spike’ of the radius volar | May impinge on the median nerve |
IV | Split fracture
Severe comminution Rotation of fragments. |
Unstable |
V | Explosion injuries
Severe displacement/comminution |
Often associated with diaphyseal comminution |
Frykman Classification
Though the Frykman classification system has traditionally been used, there is little value in its use because it does not help direct treatment. This system focuses on articular and ulnar involvement. The classification is as follows:[rx]
Radius Fracture | Ulna Fracture | |
---|---|---|
Absent | Present | |
Extra-articular | I | II |
Intra-articular involving radiocarpal joint | III | IV |
Intra-articular involving DRUJ (distal radio-ulnar joint) | V | VI |
Intra-articular involving both radiocarpal & DRUJ | VII | VIII |
Universal Classification
The Universal classification system is descriptive but also does not direct treatment. Universal codes are:[rx]
Type | Location | Displacement | Sub-type |
---|---|---|---|
I | Extra-articular | Undisplaced | |
II | Extra-articular | Displaced | A: Reducible, stable: Reducible, unstable
C: Irreducible |
III | Intra-articular | Undisplaced | |
IV | Intra-articular | Displaced | A: Reducible, stablesB: Reducible, unstable
C: Irreducible D: Complex |
AO/OTA Classification
A widely used system that includes 27 subgroups. Three main groups are based on fracture joint involvement (A – extra-articular, B – partial articular, C – complete articular). Classification is further defined based on the level of comminution and direction of displacement. A qualification (Q) modifier can be added to classify associated ulnar injury.[rx]
Fernandez Classification
The simplified system developed in response to AO classification is intended to be based on injury mechanisms with more treatment-oriented classifications (treatment suggestions not meant to be used as rigid guidelines but can be used to help decision making on a case-by-case basis)[rx]
Type | Description | Stability | Number of Fragments | Associated Lesions (see below) | Recommended Treatment |
---|---|---|---|---|---|
I | Bending fracture – metaphysis | Stable or unstable | 2 main fragments with variable metaphyseal comminution | Uncommon | Stable -> conservative stable -> percutaneous pinning or external fixation |
II | Shearing fracture – articular surface | Unstable | 2, 3, comminuted | Less uncommon | Open reduction with screw-plate fixation |
III | Compression fracture – articular surface | Stable or unstable | 2, 3, 4, comminuted | Common |
|
IV | Avulsion fracture, radiocarpal fracture, dislocation | Unstable | 2 (radial/ulnar styloid), 3, comminuted | Frequent(especially ligamentous injury) | Closed or open reduction with pin/screw fixation or tension wiring |
V | Combined fracture (high-energy injury) – Often intra-articular and open | Unstable | Comminuted | Always present | Combined treatment |
Note: Associated Lesions include carpal ligament injury, nerve injury, tendon damage, and compartment syndrome
Causes of Colles’ Fracture
- Sudden forceful fall down
- Road traffic accident
- Falls – Falling onto an outstretched hand is one of the most common causes of a broken wrist.
- Sports injuries – Many wrist fractures occur during contact sports or sports in which you might fall onto an outstretched hand — such as in-line skating or snowboarding.
- Motor vehicle crashes – Motor vehicle crashes can cause wrist bones to break, sometimes into many pieces, and often require surgical repair.
- Have osteoporosis, a disease that weakens your bones
- Eave low muscle mass or poor muscle strength, or lack agility and have poor balance (these conditions make you more likely to fall)
- Walk or do other activities in the snow or on the ice, or do activities that require a lot of forwarding momenta, such as in-line skating and skiing
- Wave an inadequate intake of calcium or vitamin D
- Football or soccer, especially on artificial turf
- Rugby
- Horseback riding
- Hockey
- Skiing
- Snowboarding
- In-line skating
- Jumping on a trampoline
Symptoms of Colles’ Fracture
Common symptoms of a Colles fracture include:
- Severe pain that might worsen when gripping or squeezing or moving your hand or wrist
- Swelling
- Tenderness
- Bruising
- Obvious deformity, such as a bent wrist
- Pain
- Bruising
- Tenderness
- The wrist hanging in a deformed way
- Pain, especially when flexing the wrist
- Deformity of the wrist, causing it to look crooked and bent.
- Your wrist is in great pain.
- Your wrist, arm, or hand is numb.
- Your fingers are pale.
Diagnosis of Colles’ Fracture
History
Your doctor in the emergency department may ask the following questions
-
How – How was the fracture created, and, if chronic, why is it still open? (underlying etiology)
-
When – How long has this fracture been present? (e.g., chronic less than 1 month or acute, more than 6 months)
- Where – Where on the body parts is it located? Is it in an area that is difficult to offload, complicated, or keep clean? Is it in an area of high skin tension? Is it near any vital organ and structures such as a major artery?
- What is your Past – Has your previous medical history of fracture? Are you suffering from any chronic disease, such as hypertension, blood pressure, diabetes mellitus, or previous major surgery? What kind of medicine did you take? What is your food habits, geographic location, Alcohol, tea, coffee consumption habit, anabolic steroid uses for athletes, etc?
Physical
Physical examination is done by your doctor, consisting of palpation of the fracture site, eliciting boney tenderness, edema, and swelling. If the fracture is in the dept of a joint, the joint motion, and normal movement will aggravate the pain.
- Inspection – Your doctor also checks superficial tissue, and skin color, involving or not only the epidermal layer or Partial-thickness affects the epidermis and extend into the dermis, but full thickness also extends through the dermis and into the adipose tissues or full-thickness extends through the dermis, and adipose exposes muscle, bone, evaluate and measure the depth, length, and width of the fracture. Access surrounding skin tissue, fracture margins for tunneling, rolled, undermining fibrotic changes, and if unattached and evaluate for signs and symptoms of infection warm, pain, and delayed healing.
- Palpation – Physical examination may reveal tenderness to palpation, swelling, edema, tenderness, worm, temperature, open fracture, closed fracture, microtrauma, and ecchymosis at the site of fracture. Condition of the surrounding skin and soft tissue, quality of vascular perfusion and pulses, and the integrity of nerve function.
- Motor function – Your doctor may ask the patient to move the injured area to assist in assessing muscle, ligament, and tendon function. The ability to move the joint means only that the muscles and tendons work properly, and does not guarantee bone integrity or stability. The concept that “it can’t be fractured because you can move it” is not correct. The jerk test and manual test are also performed to investigate the motor function.
- Sensory examination – assesses sensations such as light touch, worm, paresthesia, itching, numbness, and pinprick sensations, in its fracture side. Sensory 2-point discrimination
- Range of motion – A range of motion examination of the fracture associate joint and it is surrounding joint may help assess the muscle, tendon, ligament, and cartilage stability. Active assisted, actively resisted exercises are performed around the injured area joint.
- Blood pressure and pulse check – Blood pressure is the term used to describe the strength of blood with which your blood pushes on the sides of your arteries as it’s pumped around your body. An examination of the circulatory system, feeling for pulses, and blood pressure, and assessing how quickly blood returns to the tip of a toe to the heart and it is pressed the toe turns white (capillary refill).
Lab Test
Laboratory tests should be done as an adjunct to the overall medical status for surgical treatment.
- CBC, ESR test
- Random blood sugar, glucose, and routine diabetes test if the patient has diabetes mellitus.
- Microscopic urine examination test, and stool test.
- ECG, EKG test for heart abnormality is present
- Ultrasonography test in some cases.
- Normalized hemoglobin, hematocrit test
- Coagulation profile with bleeding time and coagulation time test, prothrombin time (PT) test for surgery if needed,
- Partial thromboplastin time (PTT), and platelet counts will be needed for operative intervention.
- Serum creatinine test,
- Serum lipid profile
- Serum uric acid test
Differential Diagnosis/ Associated Injuries
- Scapholunate ligament tear
- Median nerve injury
- TFCC (triangular fibrocartilage complex) injury, up to 50% when ulnar styloid fx also present
- Carpal ligament injury – Scapholunate Instability(most common), lunotriquetral ligament
- Tendon injury, attritional EPL rupture, usually treated with EIP tendon transfer
- Compartment syndrome
- Ulnar styloid fracture
- DRUJ (Distal Radial Ulnar Joint) Instability
- Galeazzi Fracture: highly associated with distal 1/3 radial shaft fractures[rx]
Plain radiographs
- Radiographic imaging is important in the diagnosis, classification, treatment, and follow-up assessment of these fractures. The routine minimal evaluation for distal radius fractures must include two views-a posteroanterior (PA) view and a lateral view.[rx]
- The PA view should be obtained with the humerus abducted 90 degrees from the chest wall, so that the elbow is at the same level as the shoulder and flexed 90 degrees.[rx] The palm is maintained flat against the cassette
Computed Tomography
- CT may be useful and can give significant information in comparison with that obtained with conventional radiography in the evaluation of complex or occult fractures, distal radial articular surface, distal radio-ulnar joint, ventromedial fracture fragment (as described by Melone),[rx] assessments of fracture healing as well as post-surgical evaluation.[rx]
- CT may be indicated for the confirmation of occult fractures suspected based on physical examination when plain films are normal.
Magnetic Resonance Imaging
- Although this modality is not the first choice in evaluating acute distal radius fractures, it is a powerful diagnostic tool to assess bony, ligamentous, and soft tissue abnormalities associated with these fractures.
- MRI has proved to be a very important diagnostic tool for delineating perforation of triangular fibrocartilage complex (TFCC),[rx] perforation of interosseous ligaments of the proximal carpal row, evaluating occult fractures, post-traumatic or avascular necrosis of carpal bones.
Treatment of Colles’ Fracture
Non-Surgical
- Elevate your wrist – on a pillow or the back of a chair above the level of your heart for the first few days. This will ease the pain and swelling.
- Ice the wrist – Do this for 15-20 minutes every two to three hours for two to three days. Be careful to keep the splint or cast dry while icing.
- Take over-the-counter painkillers – Ask your doctor about nonsteroidal anti-inflammatory drugs (NSAIDs), like ibuprofen, naproxen, or aspirin(except for children). They can help with pain and swelling. However, these drugs have side effects, such as an increased risk of bleeding and ulcers. They should be used only occasionally unless your doctor specifically says otherwise, as this may delay healing.
- Practice stretching and strengthening exercises – of the fingers, elbow, and shoulder if your doctor recommends them.
- A splint – which you might use for a few days to a week while the swelling goes down; if a splint is used initially, a cast is usually put on about a week later.
- A cast – which you might need for six to eight weeks or longer, depending on how bad the break is (you might need a second cast if the first one gets too loose after the swelling goes away.)
Do no HARM for 72 hours after injury
- Heat – Heat applied to fracture and injured side by hot baths, electric heat, saunas, heat packs, etc has the opposite effect on the blood flow. Heat may cause more fluid accumulation in the fracture joints by encouraging blood flow. Heat should be avoided when inflammation is developing in the acute stage. However, after about 72 hours, no further inflammation is likely to develop and heat can be soothing.
- Alcohol – stimulates the central nervous system which can increase bleeding and swelling and decrease healing.
- Running and movement – Running and walking may cause further damage, and causes healing delay.
- Massage – A massage also may increase bleeding and swelling. However, after 72 hours of your fracture, you can take a simple message, and applying heat may be soothing the pain.
Medication
The following medications may be considered by your doctor to relieve acute and immediate pain, long term treatment
- Antibiotic – Cefuroxime or Azithromycin, Flucloxacillin or any other cephalosporin/quinolone, meropenem antibiotic must be used to prevent infection or clotted blood removal to prevent further swelling, inflammation, and edema.
- NSAIDs – Prescription-strength drugs that reduce both pain and inflammation. Pain medicines and anti-inflammatory drugs help to relieve pain and stiffness, allowing for increased mobility and exercise. There are many common over-the-counter medicines called non-steroidal anti-inflammatory drugs (NSAIDs). They include first choice NSAIDs are Ketorolac, then Etoricoxib, then Aceclofenac, and naproxen. As you are taking pain medication or NSAIDs, your doctor must prescribe a standard anti-ulcer drug, such as omeprazole, pantoprazole, esomeprazole, dexlansoprazole, etc.
- Muscle Relaxants – These medications provide relief from spinal muscle spasms, and spasticity. Muscle relaxants, such as baclofen, tolperisone, eperisone, methocarbamol, carisoprodol, and cyclobenzaprine, may be prescribed to control postoperative muscle spasms, spasticity, stiffness, and contracture.
- Calcium & vitamin D3 – To improve bone health, blood clotting, helping muscles to contract, regulating heart rhythms, nerve functions, and healing fractures. As a general rule, too absorbed more minerals for men and women aged 50 and older should consume 1,200 milligrams of calcium a day, and 600 international units of vitamin D a day to heal back pain, fractures, and osteoarthritis.
- Neuropathic Agents – Drugs(pregabalin & gabapentin) that address neuropathic—or nerve-related—pain. This includes burning, numbness, tingling sensation, and paresthesia.
- Glucosamine & Diacerein, Chondroitin sulfate – can be used to tighten the loose tendon, cartilage, ligament, and cartilage, ligament regenerates cartilage or inhabits the further degeneration of cartilage, ligament. The dosage of glucosamine is 15oo mg per day in divided dosage and chondroitin sulfate is approximately 500mg per day in different dosages, and diacerein minimum of 50 mg per day may be taken if the patient suffers from osteoarthritis, rheumatoid arthritis, and any degenerative joint disease.[rx]
- Topical Medications and essential oil – These prescription-strength creams, gels, ointments, patches, and sprays help relieve pain and inflammation in acute trauma, pain, swelling, and tenderness through the skin. If the fracture is closed and not open fracture then you can use this item.
- Antidepressants – A drug that blocks pain messages from your brain and boosts the effects of endorphins in your body’s natural painkillers. It also helps in neuropathic pain, anxiety, tension, and proper sleep.
- Corticosteroids – Also known as oral steroids, these medications reduce inflammation. To heal the nerve inflammation and clotted blood in the joints.
- Dietary supplement – To eradicate the healing process from fracture your body needs a huge amount of vitamin C, and vitamin E. From your dietary supplement, you can get it, and also need to remove general weaknesses & improve your health.
- Cough Syrup – If your doctor finds any chest congestion or fracture-related injury in your chest, dyspnoea, or post-surgical breathing problem, then advise you to take bronchodilator cough syrup.
What To Eat and What to avoid
Eat Nutritiously During Your Recovery
All bones and tissues in the body need certain micronutrients to heal properly and promptly. Eating a nutritious and balanced diet that includes lots of minerals and vitamins is proven to help heal broken bones and all types of fractures. Therefore, focus on eating lots of fresh food produce (fruits and veggies), whole grains, cereal, beans, lean meats, seafood, and fish to give your body the building blocks needed to properly repair your fracture. In addition, drink plenty of purified mineral water, milk, and other dairy-based beverages to augment what you eat.
- Broken bones or fractured bones need ample minerals (calcium, phosphorus, magnesium, boron, selenium, omega-3) and protein to become strong and healthy again.
- Excellent sources of minerals/protein include dairy products, tofu, beans, broccoli, nuts and seeds, sardines, sea fish, and salmon.
- Important vitamins that are needed for bone healing include vitamin C (needed to make collagen your body’s essential element), vitamin D (crucial for mineral absorption, or machine for mineral absorber from your food), and vitamin K (binds calcium to bones and triggers more quickly collagen formation).
- Conversely, don’t consume food or drink that is known to impair bone/tissue healing, such as alcoholic beverages, sodas, fried fast food, most fast food items, and foods made with lots of refined sugars and preservatives.
Closed Reduction and Casting
- All fractures characterized by minor comminution, without or with minimal displacements can be considered for closed reduction and cast immobilization. Mainly type I and type IIA Melone’s fracture can be managed conservatively. The fracture should be kept under closed observation to look for any re-displacement.
- Despite the widespread acceptance of immobilization in a plaster cast, questions remain regarding the optimum position, the duration of immobilization, and the need to extend the cast proximal to the elbow. No clear consensus exists as to the best position for immobilizing the wrist in plaster. Sarmiento et al.[rx] advocated immobilization in a position of supination to decrease the deforming force of the brachioradialis, which may cause loss of reduction.
Pins and Plaster Technique
- Placement of pins in the metacarpals and forearm was initially advocated by Bohler in 1923, but it gained popularity after the report by Green, who showed good or excellent results in 86% of his patients.[rx]
- However, he noted a high incidence of minor or major complications, one-third of which were related to pin site only. Other researchers also noted that one-third of the complications were related to pins and 16% of the patients needed reoperation for complications.[rx]
Percutaneous Pinning
- Extra-articular fractures of the distal end of the radius with extensive comminution of the fractures that have no more than two articular fragments, in which anatomical reduction is obtainable, are amenable to percutaneous pinning of the fracture fragments and application of a plaster cast. A single pin placed through the radial styloid as a means of stabilizing the displaced fracture fragment was first suggested by Lambotte in 1908.[rx,rx]
External Fixation
- External fixation is generally accepted as superior to plaster immobilization in young patients with an intra-articular comminuted fracture of the distal radius. Other indications for external fixation include some unstable extra-articular fractures with significant comminution and failure to maintain reduction after an initial attempt at closed management in a cast, certain situations of multiple trauma, the presence of dysfunctional contralateral limb, severe open fractures with significant soft tissue injury and neurovascular compromise, and bilateral injuries.[rx]
Limited Open Reduction
- In intra-articular fractures that have more than 2 mm of displacement, the radio-carpal joint may be incongruent despite adequate attempts at reduction. The incongruency usually involves the lunate part of the distal end of the radius.
- The radial styloid process and scaphoid facet are more amenable to reduction through ligamentotaxis or by manipulation and reduction.
- A new technique of combining external fixation with open reduction of the displaced lunate fossa through a small, longitudinal incision and elevation of the impacted fragment without direct visualization of the surface of the joint has been described.[rx]
Open Reduction and Internal Fixation
- One of the recent advances in the treatment of distal radius fractures is the more frequent application of open reduction and internal fixation, especially for intra-articular fractures. There are two groups of fractures for which open reduction and internal fixation is advisable.
Arthroscopic-Assisted Fracture Reduction
- Intra-articular fractures of the radius can be arthroscopically assessed, and reduction of the articular components and assessment and repair of ligamentous injury can then be undertaken.[rx,Rx,rx] The ideal timing for arthroscopically assisted distal radius surgery is 3 to 7 days after injury.
Rehabilitation Guideline for Non-Operative/Conservative rehabilitation by Pho et al[rx]
Acute Stage (0-8 weeks)
Goals
- Protection with short-arm cast
- Control pain and edema
- Maintain range in digits, elbows, shoulder
Interventions
- AROM and PROM of digits, elbow, shoulder
- Elevation of hand and digits to control edema
- Cast removal between 6-8 weeks
Sub Acute Stage
Goal
- Control pain and edema (TENS, ice)
- Increase ROM
- Increase activities of daily living (ADLs)
Interventions
- AROM and PROM of digits, elbow, shoulder
- AROM wrist flexion/ extension, forearm supination/ pronation
- PROM of low load and prolonged stretch
Settled Stage
Goals
- Regain full ROM
- Begin strengthening
- Return to activity
Interventions
- Continue all ROM exercises
- Progress to the strengthening of all joints[rx]
Rehabilitation Guideline for External Fixation by Pho et al
Acute Stage (1-6 weeks)
Goals
- Control pain and edema (TENS, ice)
- Protect surgical site
- Maintain ROM of digits, elbow, shoulder
Interventions
- Elevation
- AROM of digits, elbow, shoulder
- AROM forearm supination/ pronation
Sub Acute (7-10 weeks)
Goal
- Protect fracture site
- Control pain and edema (TENS, ice)
- ROM of involved and uninvolved joints
Interventions
- AROM and PROM of wrist extension/ flexion, radial deviation, and supination/ pronation
Settled Stage (10-16 weeks)
Goal
- Regain full ROM
- Begin strengthening
- Increase tolerance to ADLs
Interventions
- ROM of wrist flexion/ extension, radial/ ulnar deviation, forearm supination/ pronation progressing to isometric exercises and resisted exercises using dumbbells or resistive bands
- PROM of low load and prolonged stretching of wrist motions
- Grip strengthening
- ADL training within tolerance[rx]
Cryotherapy
- Cryotherapy is an effective modality for controlling edema in the acute phase after trauma and during rehab due to its ability in helping to decrease blood flow through vasoconstriction limiting the amount of fluid escaping from capillaries to the interstitial fluid[rx]. Cryotherapy can also be combined with compression and elevation in the treatment of edema.[rx]
- To control pain using cryotherapy, the modality should be applied to the area for 10-15 minutes which can result in pain control up to 2 hours post-application.[rx]Precautions for the use of cryotherapy include: over a superficial branch of the nerve, over an open wound, poor sensation or mentation, and very young or very old patients.[rx] Contraindications for cryotherapy include; Acute febrile illness, Vasospasm e.g. Raynaud’s disease, Cryoglobulinemia, and Cold urticaria.[rx]
Electrical Stimulation
- The use of transcutaneous electrical nerve stimulation (TENS) may be used as an adjunct during any phase of rehab to address pain but can be particularly useful for patients that are increasing the level of activity of the wrist. Conventional (high-rate) TENS is useful for disrupting the pain cycle through a prolonged treatment session as great as 24 hours a day.[rx]
- Low-rate TENS is another form of electrical stimulation that is successful in diminishing pain by targeting motor or nociceptive A-delta nerves. Low-rate TENS has been reported to be effective in pain control for up to 4-5 hours post-treatment.[rx]
- The literature is still not conclusive on this topic and the results of one study may contradict or, on the contrary, reinforce the results of another study. Yet there is evidence supporting the beneficial effects of electrical stimulation, especially in combination with physiotherapy exercises.
Supervised Active rehabilitation program used in Study
- ISOMETRIC EXERCISE
- Wrist flexors and extensors
- ACTIVE RANGE OF MOTION EXERCISE
- Assisted stretch to forearm flexors and extensor musculature and radial/ulnar deviation
- Weight-bearing wrist extension exercise(hand on the table with the patient leaning forward on them) to patient tolerance
- Active stretch to the shoulder girdle and rotator cuff musculature
- Active stretch to elbow flexor and extensor musculature
- INTRINSIC HAND MUSCLE EXERCISE
- Thumb/digit opposition
- The repetitive squeezing of theraputty
- repetitive towel wringing exercise
- STRENGTHENING ROUTINE
- Biceps curl with 1,5-2 pound weights bilaterally
- Shoulder abduction, flexion, and extension reps with 2-pound weights bilaterally
- The repetitive squeezing of a rubber ball in the affected wrist
- Flexion and extension of the wrist using 1,5-pound weights increasing as tolerated
- FUNCTIONAL ACTIVITIES
- The patient is encouraged to resume pre-accident activities that involve the affected extremity (eg. writing, typing, cooking, etc.)